[Translated article] Comparative study of deep lipomas and atypical lipomatous tumours: Malignancy risk factors.

BACKGROUND AND OBJECTIVES: The diagnostic suspicion of an atypical lipomatous tumour (ALT) is difficult. The aim of this study is to delve into the most controversial diagnostic aspects of the subject. MATERIAL AND METHOD: Observational, longitudinal and retrospective study of a series of 96 deep adipose tumours (75 lipomas and 21 TLA) from 2006 to 2016: demographic, clinical, imaging and pathological variables were analysed and compared, as well as other variables related to treatment and oncological outcomes of the patients. A descriptive analysis of the collected variables was performed for the statistical study. To evaluate the potential predictor variables of malignancy, a multivariate logistic regression analysis was performed, including those that were statistically significant in the univariate analysis. RESULTS: Older age at diagnosis, lower limb location and larger size were significantly more frequent in ALTs. MRI findings showed no statistically significant differences between the two groups. In multivariate analysis, the same clinical variables were confirmed as predictors of malignancy. In the ROC curve, an optimal cut-off point of 134.0mm was used as a predictor of malignancy. CONCLUSIONS: Advanced age, location in the lower limbs and larger size are risk factors for malignancy in the differential diagnosis of deep lipomas and atypical lipomatous tumours. No radiological variable on MRI reached significance as a predictor of malignancy in our series.

Tumor metastásico en tejido blando a nivel del sacro secundario a carcinoma de células claras de riñón. Reporte de caso / Metastatic tumor in soft tissue at the level of the sacrum secondary toclear cell carcinoma of the kidney. A case report

Introducción. El cáncer de riñón es la undécima neoplasia maligna más común en los Estados Unidos Mexicanos. El carcinoma de células claras de riñón (CCR) es considerado la estirpe más frecuente y representa el 2-3 % de todos los cánceres a nivel mundial. En el contexto de la enfermedad metastásica, por lo general se identifica un tumor renal primario y las metástasis se localizan en pulmón, hueso, hígado, cerebro y, raramente, en tejidos blandos. Los pacientes con metástasis a tejidos blandos no tienen síntomas en las etapas iniciales y generalmente se identifican sólo cuando las lesiones aumentan de tamaño o durante el estudio de la pieza de resección quirúrgica. Caso clínico. Se presenta el caso de una paciente en la séptima década de la vida, con una metástasis en tejidos blandos de la región sacra, de 10 años de evolución posterior a una nefrectomía secundario a CCR. Resultados. Hallazgos clínicos e imagenológicos de un tumor bien delimitado. Se realizó resección quirúrgica de la lesión, bajo anestesia regional, con extirpación completa. Conclusión. Se recomienda que los pacientes con un sitio metastásico resecable y solitario sean llevados a resección quirúrgica con márgenes libres, como fue el caso de nuestra paciente, por su fácil acceso y ser una lesión única. En el CCR, además de su tratamiento quirúrgico inicial, es indispensable una estrecha vigilancia con examen físico e imágenes transversales, para detectar la presencia de metástasis y con ello evitar tratamientos tardíos.

Introduction. Kidney cancer is the eleventh most common malignancy in the United States of Mexico. Carcinoma renal cell (CRC) is considered the most frequent type and represents 2-3% of all cancers worldwide. In the setting of metastatic disease, a primary renal tumor is usually identified, and metastases are located in the lung, bone, liver, brain, and rarely in soft tissue. Patients with soft tissue metastases do not have symptoms in the initial stages and are generally found only when the lesions increase in size or during the study of the surgical resection piece. Clinical case. In this case, we report a female patient in the seventh decade of life with a soft tissue metastasis located in the sacral region, 10 years after a nephrectomy secondary to CRC. Results. Clinical and radiological findings of a well-defined tumor. Surgical resection of the lesion is performed under regional anesthesia with complete excision. Conclusions. It is recommended that patients with a resectable and solitary metastatic site be candidates for surgical resection with free margins, as was the case with our patient due to its easy access and single lesion. In CRC, in addition to its initial surgical treatment, close surveillance with physical examination and cross-sectional images is essential to monitor the presence of metastases and thus avoid late treatments.

Comparative study of deep lipomas and atypical lipomatous tumours: Malignancy risk factors. / Estudio comparativo de lipomas profundos y tumor lipomatoso atípico. Factores pronósticos de malignidad.

BACKGROUND AND OBJECTIVES: The diagnostic suspicion of an atypical lipomatous tumour (ALT) is difficult. The aim of this study is to delve into the most controversial diagnostic aspects of the subject. MATERIAL AND METHOD: Observational, longitudinal, and retrospective study of a series of 96 deep adipose tumours (75 lipomas and 21 TLA) from 2006 to 2016: demographic, clinical, imaging and pathological variables were analysed and compared, as well as other variables related to treatment and oncological outcomes of the patients. A descriptive analysis of the collected variables was performed for the statistical study. To evaluate the potential predictor variables of malignancy, a multivariate logistic regression analysis was performed, including those that were statistically significant in the univariate analysis. RESULTS: Older age at diagnosis, lower limb location and larger size were significantly more frequent in ALTs. MRI findings showed no statistically significant differences between the two groups. In multivariate analysis, the same clinical variables were confirmed as predictors of malignancy. In the ROC curve, an optimal cut-off point of 134.0 mm was used as a predictor of malignancy. CONCLUSIONS: Advanced age, location in the lower limbs and larger size are risk factors for malignancy in the differential diagnosis of deep lipomas and atypical lipomatous tumours. No radiological variable on MRI reached significance as a predictor of malignancy in our series.

The role of trimethylamine-N-oxide level in the diagnosis of diabetic retinopathy and the differential diagnosis of diabetic and nondiabetic retinopathy / Papel do nível de N-óxido de trimetilamina no diagnóstico da retinopatia diabética e no diagnóstico diferencial da retinopatia diabética e não-diabética

ABSTRACT Purpose: Trimethylamine N-oxide serum levels have been associated with type 2 diabetes mellitus and its complications. The current study aimed to find out if plasma trimethylamine N-oxide level may be a novel marker in the diagnosis of diabetic retinopathy and if it can be used in the differential diagnosis of diabetic and nondiabetic retinopathy. Methods: The study included 30 patients with diabetic retinopathy, 30 patients with nondiabetic retinopathy, 30 patients with type 2 diabetes mellitus without retinopathy, and 30 healthy control participants. Biochemical parameters, serum IL-6, TNF-α, and trimethylamine N-oxide levels were measured in all participants. Results: Trimethylamine N-oxide level was significantly higher in diabetic retinopathy than in the other groups (p<0.001). There was no significant difference in trimethylamine N-oxide levels between nondiabetic retinopathy and control or type 2 diabetes mellitus Groups. There was a significant positive correlation between trimethylamine N-oxide level and elevated FPG, BMI, HOMA-IR score, BUN, IL-6, and TNF-α levels. Conclusion: The current study showed that the trimethylamine N-oxide level is elevated in diabetic retinopathy. These findings suggest that serum trimethylamine N-oxide level might be a novel marker for diabetic retinopathy, and it might be used in the differential diagnosis of diabetic and nondiabetic retinopathy.

RESUMO Objetivo: Os níveis séricos de N-óxido de trimetilamina têm sido associados ao diabetes mellitus tipo 2 e suas complicações. O presente estudo tem como objetivo responder a duas questões, entre elas: O nível plasmático de N-óxido de trimetilamina poderia ser um novo marcador no diagnóstico de retinopatia diabética? e Ele poderia ser utilizado no diagnóstico diferencial de retinopatia diabética e não diabética? Métodos: Trinta pacientes com retinopatia diabética, 30 pacientes com retinopatia não diabética, 30 pacientes com diabetes mellitus tipo 2 sem retinopatia e 30 participantes saudáveis do grupo controle foram incluídos no estudo. Parâmetros bioquímicos, níveis séricos de IL-6, de TNF-α e de N-óxido de trimetilamina foram medidos em todos os participantes. Resultados: O nível de N-óxido de trimetilamina foi significativamente maior na retinopatia diabética do que nos outros grupos (p<0,001). Não houve diferença significativa no nível de N-óxido de trimetilamina entre o grupo de retinopatia não diabética, do grupo controle ou do grupo de diabetes mellitus tipo 2. Houve uma correlação positiva significativa entre o nível de N-óxido de trimetilamina e os níveis elevados de FPG, IMC, HOMA-IR, BUN, IL-6 e TNF-α. Conclusão: O estudo atual mostrou que o nível de N-óxido de trimetilamina encontra-se elevado na retinopatia diabética. Esses achados sugerem que o nível sérico de N-óxido de trimetilamina pode ser um novo marcador na retinopatia diabética, podendo ser usado no diagnóstico diferencial de retinopatia diabética e não diabética.

The decision-making skills of Brazilian physical therapists for patients with red flags / Capacidade da tomada de decisão dos fisioterapeutas brasileiros para pacientes com bandeiras vermelhas

ABSTRACT BACKGROUND AND OBJECTIVES: The red flags screening purpose is to ensure that signs and symptoms that raise suspicion of serious diseases are being considered during the assessment, assisting physical therapists in their clinical decision process. Brazilian physical therapists are autonomous and can act as first contact professionals in the management of musculoskeletal disorders, therefore, they need to know how to recognize, screen and refer patients with red flags for better therapeutic management. The objectives of this study were to verify whether Brazilian physical therapists can recognize and manage patients who presented red flags, compare professionals' skills regarding different academic degree levels and clinical experience and identify which factors can influence the results. METHODS: A cross-sectional and quantitative research was conducted, collected from an online questionnaire. The target audience consisted of Brazilian physical therapists who have clinical experience in the management of patients with musculoskeletal disorders. Participants filled demographic data and made clinical decisions based on six clinical cases created by the authors, based on the literature, and reviewed by three experts. Data were analyzed using descriptive statistics, the Chi-square test of independence and logistic regression. RESULTS: The study analyzed 384 answers from Brazilian physical therapists with clinical experience in musculoskeletal conditions. Brazilian physical therapists, in general, have not shown to be able to properly recognize and manage the clinical cases involving red flags, with 23.2% of the sample performing appropriate management for medical conditions, 53.9% for emergency conditions and 61.8% for medical conditions with associated musculoskeletal dysfunction. More years of clinical experience and post-professional education did not positively influence the outcomes. Higher academic degrees (Doctorate) can influence positively on the management of non-emergency medical conditions. CONCLUSION: Brazilian physical therapists who work with patients with musculoskeletal disorders perform poorly in identifying red flags in hypothetical clinical cases.

RESUMO JUSTIFICATIVA E OBJETIVOS: O objetivo da triagem de bandeiras vermelhas é garantir que sinais e sintomas que levantam suspeitas de doenças graves sejam considerados durante a avaliação, auxiliando os fisioterapeutas no seu processo de decisão clínica. Os fisioterapeutas brasileiros são autônomos e podem atuar como profissionais de primeiro contato no manejo de distúrbios musculoesqueléticos, portanto, precisam saber reconhecer, rastrear e encaminhar pacientes com bandeiras vermelhas para melhor manejo terapêutico. Os objetivos deste estudo foram verificar se os fisioterapeutas brasileiros conseguem reconhecer e tratar pacientes que apresentavam bandeiras vermelhas, comparar as habilidades dos profissionais com diferentes níveis de formação acadêmica e experiência clínica e identificar quais fatores podem influenciar os resultados. METHODS: Uma pesquisa transversal e quantitativa foi realizada, coletada através de um questionário online. O público-alvo consistiu em fisioterapeutas brasileiros com experiência clínica no manejo de pacientes com disfunções musculoesqueléticas. Os participantes preencheram dados demográficos e tomaram decisões clínicas com base em seis casos clínicos criados pelos autores, com base na literatura, e revisados por três especialistas. Os dados foram analisados por estatísticas descritivas, pelo teste qui-quadrado de independência e por regressão logística. RESULTADOS: Foram analisadas 384 respostas de fisioterapeutas brasileiros com experiência clínica em disfunções musculoesqueléticas. Os fisioterapeutas brasileiros, em geral, não demonstraram ser capazes de reconhecer e manejar adequadamente os casos clínicos envolvendo bandeiras vermelhas, com 23,2% da amostra realizando manejo adequado para condições médicas, 53,9% para condições de emergência e 61,8% para condições médicas com disfunção musculoesquelética associada. Mais anos de experiência clínica e educação pós-profissional não influenciaram positivamente os resultados. Graus acadêmicos mais elevados (Doutorado) podem influenciar positivamente no manejo de condições médicas não emergenciais. RESULTADOS: Foram analisadas 384 respostas de fisioterapeutas brasileiros com experiência clínica em disfunções musculoesqueléticas. Os fisioterapeutas brasileiros, em geral, não demonstraram ser capazes de reconhecer e manejar adequadamente os casos clínicos envolvendo bandeiras vermelhas, com 23,2% da amostra realizando manejo adequado para condições médicas, 53,9% para condições de emergência e 61,8% para condições médicas com disfunção musculoesquelética associada. Mais anos de experiência clínica e educação pós-profissional não influenciaram positivamente os resultados. Graus acadêmicos mais elevados (Doutorado) podem influenciar positivamente no manejo de condições médicas não emergenciais. CONCLUSÃO: Fisioterapeutas brasileiros que atuam com pacientes com disfunções musculoesqueléticas apresentam um mau desempenho na identificação de bandeiras vermelhas em casos clínicos hipotéticos.

Aproximación diagnóstica a las Cefaleas después de los 65 años

Con el objetivo de facilitar el diagnóstico diferencial de la queja de cefalea después de los 65 años de edad, se llevó a cabo una revisión de la literatura con respecto a las cefaleas primarias y secundarias de acuerdo a la Clasificación de la Sociedad Internacional de Cefaleas, seleccionándose las variedades más frecuentes en las personas mayores, describiéndose su condición aguda o crónica,  su frecuencia, características y particularidades, a manera de facilitar un diagnóstico presuntivo que oriente una intervención específica. Las cefaleas primarias más frecuentes en el adulto mayor son la cefalea tensional y la migraña. Entre las cefaleas secundarias más frecuentes se encuentran la cefalea cervicogénica, la cefalea por abuso de analgésicos, dolor craneal y las diferentes causas de cefaleas metabólicas. Se mencionan los estudios básicos y paraclínicos, así como los criterios para estudio por neuroimagen y las señales de alerta para cefaleas secundarias. (provisto por Infomedic International)

A literature review was conducted to facilitate the differential diagnosis of headaches in individuals over the age of 65. The review focused on primary and secondary headaches according to the International Headache Society Classification, highlighting the most common types among older individuals. The review described the acute or chronic nature, frequency, characteristics, and specific features of these headaches to aid in making a presumptive diagnosis and guide appropriate interventions. The most common primary headaches in older adults are tension-type headache and migraine. Among the secondary headaches, the most frequent ones include cervicogenic headache, medication-overuse headache, cranial pain, and various metabolic causes of headaches. The review also mentioned basic and paraclinical studies, criteria for neuroimaging, and warning signs for secondary headaches. (provided by Infomedic International)

Cisto gigante de segundo arco branquial em adulto: Relato de caso e revisão de literatura / Giant cyst of the second branchial arch in an adult: case report and literature review

Introdução: Os arcos branquiais são os precursores embriológicos da face, pescoço e faringe. As anomalias dos arcos branquiais são a segunda lesão congênita mais comum de cabeça e pescoço em crianças. Entre essas anomalias, estão os cistos de arcos branquiais (BCC), que surgem devido a uma incorreta obliteração das fendas branquiais, ainda no período embrionário. Os BCC podem ser assintomáticos, apenas percebidos incidentalmente, e não se manifestar até a idade adulta. Resultados: Anomalias do segundo arco branquial devem ser consideradas como um dos possíveis diagnósticos diferenciais de massas cervicais, especialmente as que se manifestam como um abaulamento em região lateral do pescoço. Os BCC são formações de revestimento epitelial, sem aberturas externas. Após seu diagnóstico, o tratamento é cirúrgico, usualmente por meio de uma incisão cervical transversa e cuidadosa dissecação das estruturas, com o objetivo de extirpar toda a lesão. Conclusão: O método descrito, de excisão da lesão, por meio de incisão transversa em região cervical, dissecção tecidual por planos e ressecção de massa cística, é uma opção para o tratamento dessa deformidade, com adequado resultado estético e boa reprodutibilidade.

Introduction: The branchial arches are the embryological precursors of the face, neck, and pharynx. Branchial arch anomalies are the second most common congenital head and neck lesions in children. Among these anomalies are branchial arch cysts (BCC), which arise due to incorrect obliteration of the branchial slits, still in the embryonic period. BCCs may be asymptomatic, only noticed incidentally, and not manifest until adulthood. Results: Anomalies of the second branchial arch should be considered as one of the possible differential diagnoses of neck masses, especially those that manifest as a bulge in the lateral region of the neck. BCCs are epithelial lining formations without external openings. After diagnosis, treatment is surgical, usually through a transverse cervical incision and careful dissection of the structures, with the aim of extirpating the entire lesion. Conclusion: The method described of excision of the lesion through a transverse incision in the cervical region, tissue dissection in planes, and resection of the cystic mass is an option for the treatment of this deformity, with adequate aesthetic results and good reproducibility.

Dificultad diagnóstica en masa retroperitoneal. Reporte de un caso / Diagnostic difficulty in retroperitoneal mass: A case report

El Schwannoma se origina de la vaina perineural de Schwannoma, se detecta con frecuencia incidentalmente en estudios imagenológicos siendo el principal método diagnóstico la Tomografía Computada. El tratamiento es la resección quirúrgica con márgenes libres. Se presenta una paciente femenina de 49 años, en control por oncología por enfermedad de base, cáncer de mama izquierda, se identifica por TAC y PECT/TC imagen voluminosa en retroperitoneo situación lateroaórtica izquierda de configuración no quística e hipermetabólica, solicita biopsia percutánea, ante la falta de ventana, se decide exeresis completa de masa. Diagnóstico definitivo patológico Schwannoma. Sin indicación de tratamiento adyuvante, cursa buena evolución postoperatoria sin recidiva.

Schwannoma, a benign tumor that arises from Schwann cells of the perineural nerve sheath, is often incidentally detected in imaging tests and mainly diagnosed by CT scan. Treatment consists of surgical resection with clear margins. We present the case of a 49-year-old female patient subject to Oncology Department follow-up due to an underlying disease, left breast cancer. A large, hypermetabolic, noncystic mass in the retroperitoneal region is identified by CT and PECT/CT scan in the left lateral aortic area. A percutaneous biopsy is requested. Due to the limited acoustic window, complete resection of the mass is decided. Final histopathology diagnosis of Schwannoma. No adjuvant treatment indication; undergoing favorable postoperative progress, without recurrence

Presentación clínica de patologías no malignas que simulan leucemia cutis: a propósito de dos casos / Clinical presentation of non-malignant diseases mimicking leukemia cutis: A report of two cases

La infiltración cutánea por células leucémicas conocida como leucemia cutis es una presentación infrecuente de esta patología y constituye un desafío diagnóstico. Los diagnósticos como infecciones, otras patologías neoplásicas con afectación cutánea y los trastornos histiocíticos, entre otros, constituyen los principales diagnósticos diferenciales, ya que configuran un escenario pronóstico y terapéutico diferente. Se presentan dos pacientes que fueron diagnosticados inicialmente como leucemia cutis, cuyo diagnóstico final fue de patologías no malignas.

The infiltration of leukemia cells into the skin, known as leukemia cutis, is a rare presentation of this disease and accounts for a diagnostic challenge. The main differential diagnoses include infections, other neoplastic diseases with skin involvement and histiocytic disorders, among others, as they entail different prognostic and therapeutic approaches. Here we describe two patients who were initially diagnosed with leukemia cutis, whose final diagnosis was of non-malignant diseases.

Crohn's Disease in a Patient with Tuberculosis: A Diagnostic and Therapeutic Challenge

Introduction: Crohn's disease (CD) is unusual in Colombia. Tuberculosis (TB) occurs more frequently, but intestinal involvement is rare. Differentiating these two entities and treating the cases in which they coexist is a challenge. Clinical case: A 28-year-old man with three months of constitutional, respiratory, and GI symptoms was initially diagnosed with pulmonary tuberculosis, and all the clinical manifestations were attributed to this entity. Given the absence of improvement with treatment and the sum of radiological, endoscopic, and pathological findings, CD was confirmed. Treatment was complex due to the coexistence of the two entities, although he finally went into remission with the use of biologicals. Discussion: Diagnosing CD requires the sum of clinical and paraclinical findings. A therapeutic test may be necessary to differentiate it from intestinal TB. The treatment of CD in a patient with TB has some limitations; steroids are not contraindicated, and biologicals must be initiated cautiously. Conclusions: Differentiating CD from intestinal TB is a diagnostic challenge. Therapeutic management when these two entities coexist requires an interdisciplinary approach.

Introducción: la enfermedad de Crohn (EC) es inusual en Colombia. La tuberculosis (TB) se presenta con mayor frecuencia, pero el compromiso intestinal es raro. Diferenciar estas dos entidades y el tratamiento de los casos en los que coexisten es un reto. Caso clínico: hombre de 28 años con 3 meses de síntomas constitucionales, respiratorios y gastrointestinales al que en un inicio se le confirmó el diagnóstico de tuberculosis pulmonar y se le atribuyó a esta entidad todas las manifestaciones clínicas. Ante la ausencia de mejoría con el tratamiento y la suma de hallazgos radiológicos, endoscópicos y patológicos, se confirmó EC. El tratamiento fue difícil debido a la coexistencia de las dos entidades, aunque finalmente presentó remisión con el uso de biológicos. Discusión: diagnosticar la EC requiere de la sumatoria de hallazgos clínicos y paraclínicos. Para diferenciarla de TB intestinal puede llegar a ser necesaria una prueba terapéutica. El tratamiento de EC en un paciente con TB tiene algunas limitaciones, los esteroides no se contraindican de manera absoluta y el inicio de biológicos debe hacerse con precaución. Conclusiones: diferenciar la EC de la TB intestinal es un reto diagnóstico. El enfoque terapéutico cuando coexisten estas dos entidades requiere un abordaje interdisciplinario.

Diagnóstico diferencial: ¿Qué es, cómo se hace, dónde lo enseñan? / Differential diagnosis: what is it, how is it done and where is it taught?

El diagnóstico es la piedra angular de la medicina individual, por tanto, dominarlo y conocerlo es esencial para todo médico al indagar en el estado de salud y patológico de los pacientes. Los profesionales de la salud deben dedicar todos sus esfuerzos a su realización, siempre que disponga de los elementos y medios necesarios, tanto teóricos como prácticos, para la correcta utilización del método clínico, elemento esencial del diagnóstico diferencial. En este artículo se abordan los aspectos más relevantes que intervienen en la realización del diagnóstico de los pacientes; se enfatiza en los pasos necesarios para efectuar un verdadero diagnóstico diferencial que posibilite la decantación de las posibilidades etiológicas del cuadro clínico del enfermo. A través de la correcta aplicación del método clínico es posible la aproximación al diagnóstico clínico definitivo del paciente.

Diagnosis is the cornerstone of individual medicine, therefore, mastering it and knowing it is essential for every doctor when inquiring into the health and pathological status of patients. Health professionals must dedicate all their efforts to its realization as long as they have the necessary elements and means, both theoretical and practical, for the correct use of the clinical method, which is an essential element of differential diagnosis. This article addresses the most relevant aspects involved in carrying out patient's diagnosis; emphasis is placed on the necessary steps to carry out a true differential diagnosis that makes it possible to decant the etiological possibilities of the patient's clinical manifestations. It is possible to approach the definitive clinical diagnosis of the patient through the correct application of the clinical method.

Differential Diagnosis of Oral Metastases / Diagnóstico Diferencial de las Metástasis Orales

Metastatic lesions in the mouth can resemble common inflammatory lesions. Therefore, we set out to investigate oral metastases whose clinical and imaging characteristics mimicked those of harmless lesions, confusing and delaying the diagnosis. For this, a systematic review was carried out from case reports, case series, and cross-sectional studies in the PubMed/Medline, Scopus, Embase-via Elsevier, Virtual Health Library, Web of Science, and gray literature, using PICO strategy without period restriction. We assessed the quality of studies using the Joanna Briggs Institute assessment tool. A narrative synthesis of the data was carried out. Association analyses using chi-square and Fisher's exact tests were performed, with statistical significance at p<0.05. Most of the lesions came from the lung, breast, kidneys, liver, and thyroid. They affected mainly the mandibles of men, between the fifth and seventh decades of life, causing osteolysis. In soft tissue, there were firm swellings, associated with bleeding. Limitations regarding the heterogeneity of the included studies and the absence of clinic pathological descriptions of the tumors substantially reduced the chance of statistical analysis of the data. Knowing the different possibilities of clinical presentation of oral and maxillofacial metastases is important for the diagnost ic suspicion to occur and diagnostic errors to be avoided. Thus, treatment is instituted and survival can be extended. Protocol registration: PROSPERO CRD42020200696.

Las lesiones metastásicas en la cavidad oral pueden parecer similares a lesiones inflamatorias comunes. Por ello, nos propusimos investigar metástasis orales cuyas características clínicas e imagenológicas simularan las de lesiones inofensivas, confundiendo y retrasando el diagnóstico. Para ello, se realizó una revisión sistemática a partir de reportes de casos, series de casos y estudios transversales en PubMed/Medline, Scopus, Embase-vía Elsevier, Virtual Health Library, Web of Science y literatura gris, utilizando la estrategia PICO sin restricción de periodo. La calidad de los estudios se evaluó mediante la herramienta de evaluación del Instituto Joanna Briggs. Se realizó una síntesis narrativa de los datos. Se realizaron análisis de asociación mediante chi-cuadrado y prueba exacta de Fisher, con significancia estadística en p<0,05. La mayoría de las lesiones procedían de pulmón, mama, riñones, hígado y tiroides. Afectan principalmente a las mandíbulas de los hombres, entre la quinta y la séptima década de la vida, provocando osteólisis. En los tejidos blandos, había hinchazones firmes, asociadas con sangrado. Las limitaciones con respecto a la heterogeneidad de los estudios incluidos y la ausencia de descripciones clinicopatológicas de los tumores redujeron sustancialmente la posibilidad de realizar un análisis estadístico de los datos. Conocer las diferentes posibilidades de presentación clínica de las metástasis orales y maxilofaciales es importante para que se produzca la sospecha diagnóstica y se eviten errores diagnósticos. Por lo tanto, se instituye el tratamiento y se puede prolongar la supervivencia. Registro de protocolo: PROSPERO CRD42020200696.

Solitary fibrous tumor: Two cases report with a focus on the differential diagnosis / Tumor Fibroso Solitário: Relato de dois casos com foco no diagnóstico diferencial

Solitary fibrous tumor (SFT) is a neoplasm of fibroblastic/myofibroblastic origin with intermediate biological behavior. We report here two cases of SFT affecting an unusual anatomical site in 58-year-old and 40-year-old female patients and discuss the differential diagnosis of this lesion. In case 01, the lesion showed the clinical appearance of an asymptomatic "blister" with normal color, rubbery consistency, measuring 0.3 cm, and affected the lower lip; while in case 02, a symptomatic red nodular lesion with a soft consistency and measuring 0.5 cm affected the floor of the mouth. Excisional biopsies were performed. Microscopically, two well-delimited benign neoplasms were observed, exhibiting the proliferation of ovoid to spindle-shaped mesenchymal cells, vascular spaces with staghorn arrangement, and the absence of mitosis figures. Immunohistochemistry was performed in case 01 to assist in the diagnosis. Weak and diffuse immunostaining was observed for α-SMA and intense and diffuse immunopositivity for Bcl-2 and CD34. Based on histopathological and immunohistochemical features, a diagnosis of SFT was rendered in both cases. The low occurrence and nonspecific clinical features of oral SFT may make its clinical diagnosis difficult. Also, morphological and immunohistochemical are essential for differential diagnosis with other mesenchymal neoplasms.(AU)

O tumor fibroso solitário (TFS) é uma neoplasia de origem fibroblástica/miofibroblastica com comportamento biológico intermediário. Nesse artigo relatamos dois casos de TFS afetando sítios anatômicos incomuns em pacientes do sexo feminino de 58 anos e 40 anos e discutir os seus diagnósticos. No caso 01 clinicamente a lesão apresentou um aspecto de "bolha" assintomática, coloração normal da mucosa, consistência borrachoide medindo 0,3 cm, em região de lábio inferior, enquanto que no caso 02, como uma lesão sintomática, vermelha, nodular com consistência mole e medindo 0,5 cm afetando o assoalho bucal. As biópsias excecionais foram realizadas. Microscopicamente, observamos duas lesões neoplásicas bem delimitadas exibindo uma proliferação de células mesenquimais variando de ovoides a fusiformes, vasos sanguíneos em formato de "chifre de veado", com ausência de figuras de mitoses. No caso 01 foi realizado análise imuno-histoquímica para auxiliar no diagnóstico. Foi observado uma marcação fraca e difusa de α-SMA e uma intensa e difusa imunopositividade para o Bcl-2 e CD34.Baseado nos achados histopatológicos e imuno-histoquímicos o diagnóstico de TFS foi estabelecido em ambos os casos. A baixa ocorrência e os achados clínicos inespecíficos do TFS oral podem dificultar o diagnóstico clínico. Além disso, as análises morfológicas e imuno-histoquimicas são essenciais para realização do diagnóstico diferencial com outras neoplasias mesenquimais.(AU)_

Lesões periapicais de origem não-endodôntica: uma revisão integrativa

O objetivo deste trabalho foi elencar quais são as principais lesões periapicais que não têm origem a partir da necrose pulpar. Para tanto, realizou-se uma revisão integrativa da literatura, com busca nas bases de dados Literatura Latino-Americana e do Caribe em Ciências da Saúde (LILACS), Medical Literature Analysis and Retrievel System Online (MEDLINE) e Bibliografia Brasileira de Odontologia (BBO). Os descritores utilizados foram "doenças periapicais" e "diagnóstico diferencial", combinados com o operador booleano "AND". Foram encontrados 42 artigos que responderam aos critérios de inclusão e exclusão. A análise dos estudos incluídos mostrou que as principais lesões periapicais de origem não endodôntica são o queratocisto odontogênico e o ameloblastoma. Embora a prevalência de lesões periapicais não endodônticas seja baixa, é importante estar atento aos possíveis diagnósticos diferenciais, visto que as lesões que mais apareceram na literatura se tratam de patologias localmente agressivas e potencialmente mutiladoras. Ademais, a conduta do profissional que se depara com qualquer tipo de lesão periapical que apresente comportamento fora dos padrões de normalidade deve ser a realização de biópsia e análise histopatológica.

The aim of this study was to list the main periapical lesions that do not originate from pulpal necrosis. An integrative literature review was carried out, with a search in the Latin American and Caribbean Literature in Health Sciences (LILACS), Medical Literature Analysis and Retrievel System Online (MEDLINE) and Bibliografia Brasileira de Odontologia (BBO) databases. The keywords used were "periapical diseases" and "differential diagnosis", combined with the boolean operator "AND". 42 articles were found that met the inclusion and exclusion criteria. The analysis of the included studies showed that the main periapical lesions of non-endodontic origin are the odontogenic keratocyst and the ameloblastoma. Although the prevalence of non-endodontic periapical lesions is low, it is important to be aware of possible differential diagnoses, since the lesions that most appeared in the literature are locally aggressive and potentially mutilating pathologies. In addition, the conduct of the professional who is faced with any type of periapical lesion that presents behavior outside the normal range should be to perform a biopsy and histopathological analysis.

Hiperplasia pseudoepiteliomatosa: carcinoma escamocelular versus paracoccidioidomicosis oral, un caso con mirada dermatológica / Pseudoepitheliomatous hyperplasia: Squamous cell carcinoma versus oral paracoccidioidomycosis, a case from a dermatological perspective

La paracoccidioidomicosis es una micosis sistémica endémica en Latinoamérica. La presentación más frecuente compromete crónicamente los pulmones, la piel y las mucosas. Al inicio, este paciente presentó, por varios años, una lesión única en la mucosa oral que, en ausencia de otros síntomas, se relacionó con una neoplasia maligna, específicamente con un carcinoma escamocelular. La diferenciación entre los dos diagnósticos se hace mediante un examen directo, un estudio histopatológico y cultivos iniciales y subsecuentes. Sin embargo, tales estudios no fueron concluyentes. Después de varias consultas y pruebas, con los resultados del examen directo, la inmunodifusión y la PCR en tiempo real se confirmó el diagnóstico de paracoccidioidomicosis crónica multifocal. Este caso alerta sobre la ausencia de sospecha clínica de micosis endémicas, dada la presencia de lesiones mucocutaneas que pueden ser producidas por hongos como Paracoccidioides spp, y la importancia de considerarlas entre los diagnósticos diferenciales.

Paracoccidioidomycosis is a systemic mycosis endemic in Latin America. The most frequent form involves a chronic compromise of the lungs, skin, and mucosa. The patient started with a single oral lesion that lasted for several years. The absence of other symptoms pointed out a possible malignant neoplasm, specifically a squamous cell carcinoma. Differentiation between both diagnoses-fungal infection and carcinoma-depends on the results of the direct examination, the histopathological study, and the initial and subsequent cultures. However, in this case, those findings were not conclusive. The coexistence of both diagnoses is frequent and increases the diagnostic challenge. After several consultations and tests, direct examination, immunodiffusion and real-time PCR findings the multifocal chronic paracoccidioidomycosis diagnosis was confirmed. This case warns about a systematical absence of clinical suspicion of endemic mycoses before the appereance of mucocutaneous lesions, which can be produced by fungi like Paracoccidioides spp, and the importance of considering those mycoses among the differential diagnoses.

Expert consensus on the integrated diagnosis of idiopathic multicentric Castleman disease.

Idiopathic multicentric Castleman disease (iMCD) is rare. The differential diagnosis includes inflammatory, autoimmune and neoplastic disease. The identification of the histopathological features of Castleman disease in the lymph node is the main diagnostic criterion. Fifty-three experts from three medical societies (SEMI, SEHH and SEAP) have created a multi-disciplinary consensus document in order to standardise the diagnosis of Castleman disease. Using the Delphi method, specific recommendations for the initial clinical, laboratory and imaging studies have been made for an integrated diagnosis of iMCD as well as for the best way to obtain samples for histopathological confirmation, correct laboratory procedure and interpretation and reporting of results.

Vanek's tumor: a rare differential diagnosis of colonic submucosal lesions

Gastrointestinal submucosal lesions represent a diagnostic challenge, including benign or malignant lesions, so they are identified more accurately by histopathological study accompanied by immunohistochemistry. This is a case of a 21-year-old man with a bleeding submucosal lesion in the cecum. The patient underwent a right colectomy. Microscopic finding was compatible with Vanek's tumor.

Lesiones submucosas gastrointestinales representan un reto diagnóstico, incluyen lesiones benignas o malignas, que se identifican con mayor exactitud con estudios histopatológicos, incluyendo inmunohistoquímica. Se reporta el caso de un paciente varón de 21 años con lesión submucosa hemorrágica localizada en el ciego, por lo que se realiza colectomía. Hallazgos microscópicos son compatibles con Tumor de Vanek.

The importance of organic screening, regarding a clinical case.

INTRODUCTION: Before cataloguing a morbid process as a "mental disorder", it is essential to bear in mind the importance of early diagnosis of causes of non-psychiatric origin for a possible clinical presentation. For this reason, we will try to reflect this fact, which it seems necessary to remember even though it is well known, since it can be overlooked in emergency situations in the hospital setting, with the consequences derived from an incomplete diagnosis and with the potential life-threatening risk for the patient. CASE PRESENTATION: A 13-year-old female adolescent, who presented an acute clinical picture suggestive of dissociative disorder. She required hospital admission for diagnostic-therapeutic clarification, and neuroimaging findings led to an initial diagnosis of a neoplastic lesion in the brain stem and, finally, as ischaemic lesion of vasculitic origin in said location. DISCUSSION: A differential diagnosis was proposed through the different psychic and non-psychic aetiologies of the clinical picture, but the intervention of the hospital's paediatric service was necessary for orientation and definitive affiliation, given the suspicion of non-psychiatric illness after a torpid evolution in spite of psychotherapeutic and psychopharmacological interventions. CONCLUSIONS: Through the presentation and review of a clinical case that happened in our hospital, we must insist on an adequate comprehensive approach to the patient, especially with the child-adolescent population, when faced with an acute clinical presentation and without previous studies at a relevant physical level.

La importancia del cribado orgánico. A propósito de un caso clínico

Introducción: Antes de catalogar un proceso morboso como trastorno mental, es imprescindible tener presente la importancia del diagnóstico precoz de causas de origen no psiquiátrico para una posible presentación clínica. Por ello, trataremos de reflejar este hecho, que se antoja necesario recordar aunque sea bien sabido, ya que puede pasarse por alto en situaciones de urgencia en el ámbito hospitalario, con las consecuencias derivadas de un cribado incompleto y con el potencial riesgo vital para el paciente. Presentación del caso: Adolescente mujer, de 13 años, que presentó un cuadro clínico agudosugestivo de carácter disociativo. Se precisó su ingreso hospitalario para la aclaración diagnóstico-terapéutica, y mediante neuroimagen se diagnosticó inicialmente como lesión neoplásica en el tronco del encéfalo y, finalmente, como lesión isquémica de origen vasculítico en dicha localización. Discusión: Se planteó un diagnóstico diferencial a través de las diferentes etiologías tanto psíquicas como no psíquicas del cuadro clínico, pero fue necesaria la intervención del servicio de pediatría hospitalario para la orientación y filiación definitiva, ante la sospecha de enfermedad no psiquiátrica tras una evolución tórpida a pesar de intervenciones psicoterapéuticas y psicofarmacológicas. Conclusiones: A través de la presentación y revisión de un caso clínico que sucedió en nuestro hospital de trabajo, se debe insistir en un adecuado abordaje integral del paciente, especialmente con población infanto-juvenil, ante una presentación clínica aguda y sin previas evaluaciones físicas de relevancia.

Introduction: Before cataloguing a morbid process as a "mental disorder", it is essential to bear in mind the importance of early diagnosis of causes of non-psychiatric origin for a possible clinical presentation. For this reason, we will try to reflect this fact, which it seems necessary to remember even though it is well known, since it can be overlooked in emergency situations in the hospital setting, with the consequences derived from an incomplete diagnosis and with the potential life-threatening risk for the patient. Case presentation: A 13-year-old female adolescent, who presented an acute clinical picture suggestive of dissociative disorder. She required hospital admission for diagnostic-therapeutic clarification, and neuroimaging findings led to an initial diagnosis of a neoplastic lesion in the brain stem and, finally, as ischaemic lesion of vasculitic origin in said location. Discussion: A differential diagnosis was proposed through the different psychic and nonpsychic aetiologies of the clinical picture, being the intervention of the hospital's paediatric service necessary for orientation and definitive affiliation, given the suspicion of non-psychiatric illness after a torpid evolution in spite of psychotherapeutic and psychopharmacological interventions. Conclusions: Through the presentation and review of a clinical case that happened in our hospital, we must insist on an adequate comprehensive approach to the patient, especially with the child-adolescent population, when faced with an acute clinical presentation and without previous studies at a relevant physical level.