Contribution of Stemness-Linked Transcription Regulators to the Progression of Breast Cancer.

Although there are currently several factors that allow measuring the risk of having breast cancer or predicting its progression, the underlying causes of this malignancy have remained unknown. Several molecular studies have described some mechanisms involved in the progress of breast cancer. These have helped in identifying new targets with therapeutic potential. However, despite the therapeutic strategies implemented from the advances achieved in breast cancer research, a large percentage of patients with breast cancer die due to the spread of malignant cells to other tissues or organs, such as bones and lungs. Therefore, determining the processes that promote the migration of malignant cells remains one of the greatest challenges for oncological research. Several research groups have reported evidence on how the dedifferentiation of tumor cells leads to the acquisition of stemness characteristics, such as invasion, metastasis, the capability to evade the immunological response, and resistance to several cytotoxic drugs. These phenotypic changes have been associated with a complex reprogramming of gene expression in tumor cells during the Epithelial- Mesenchymal Transition (EMT). Considering the determining role that the transcriptional regulation plays in the expression of the specific characteristics and attributes of breast cancer during ETM, in the present work, we reviewed and analyzed several transcriptional mechanisms that support the mesenchymal phenotype. In the same way, we established the importance of transcription factors with a therapeutic perspective in the progress of breast cancer.

Síndrome antisintetasa en paciente con COP como afección pulmonar / Antisynthetase Syndrome in Patient with COP as Pulmonary Disease

El síndrome antisintetasa es una miopatía inflamatoria autoinmune que puede presentar afectación pulmonar intersticial. La presencia de anticuerpos antisintetasa se relaciona con una mayor incidencia de enfermedad pulmonar intersticial. El patrón imagenológico y anatomopatológico de la EPID es variable, fundamentalmente inflamatorio. En el caso presentado se describe una paciente con miopatía inflamatoria y compromiso pulmonar presentando un patrón tomográfico de neumonía organizativa. Se destaca la importancia de elevar el índice de sospecha de síndrome antisintetasa ante un paciente con compromiso pulmonar y miopatía, siendo fundamental para arribar a un diagnóstico la evaluación multidisciplinaria. Se realiza una revisión de la evidencia al respecto en la discusión del caso

The antisynthetase syndrome is an autoimmune inflammatory miopathy that may show interstitial pulmonary involvement. The presence of antisynthetase antibodies is related to a higher incidence of interstitial pulmonary involvement. The imaging and anatomopathological pattern of diffuse interstitial pulmonary disease (DIPD) is variable, mainly inflammatory. This case describes a female patient with inflammatory miopathy and pulmonary involvement who shows a tomographic pattern of organizing pneumonia. It is important to increase suspicion for antisynthetase syndrome in a patient with pulmonary involvement and miopathy, where multidisciplinary evaluation is fundamental to reach a diagnosis. A review of the evidence is made in the discussion of the case.

Treatment of Breast Cancer With Gonadotropin-Releasing Hormone Analogs.

Although significant progress has been made in the implementation of new breast cancer treatments over the last three decades, this neoplasm annually continues to show high worldwide rates of morbidity and mortality. In consequence, the search for novel therapies with greater effectiveness and specificity has not come to a stop. Among the alternative therapeutic targets, the human gonadotropin-releasing hormone type I and type II (hGnRH-I and hGnRH-II, respectively) and its receptor, the human gonadotropin-releasing hormone receptor type I (hGnRHR-I), have shown to be powerful therapeutic targets to decrease the adverse effects of this disease. In the present review, we describe how the administration of GnRH analogs is able to reduce circulating concentrations of estrogen in premenopausal women through their action on the hypothalamus-pituitary-ovarian axis, consequently reducing the growth of breast tumors and disease recurrence. Also, it has been mentioned that, regardless of the suppression of synthesis and secretion of ovarian steroids, GnRH agonists exert direct anticancer action, such as the reduction of tumor growth and cell invasion. In addition, we discuss the effects on breast cancer of the hGnRH-I and hGnRH-II agonist and antagonist, non-peptide GnRH antagonists, and cytotoxic analogs of GnRH and their implication as novel adjuvant therapies as antitumor agents for reducing the adverse effects of breast cancer. In conclusion, we suggest that the hGnRH/hGnRHR system is a promising target for pharmaceutical development in the treatment of breast cancer, especially for the treatment of advanced states of this disease.

Immune diffuse alveolar hemorrhage: Clinical presentation and outcome.

BACKGROUND: Diffuse alveolar haemorrhage (DAH) is a manifestation of several immune and nonimmune diseases. OBJECTIVE: The objective of this study was to characterize the clinical characteristics and short-term outcomes of patients with immune-mediated DAH requiring hospital admission. METHODS: A retrospective study from December 2010 to December 2015, was conducted by analyzing the clinical records of 39 patients with DAH with a proven immunological origin. The diagnosis of individual collagen vascular diseases (CVD) was made according to the criteria of the corresponding societies. RESULTS: Thirty-nine patients were included (median age 44.8 years, range 16-76). The main causes of DAH were ANCA-related vasculitis (74.3%) mainly granulomatosis with polyangiitis (n = 14) and microscopic polyangiitis (n = 13). Thirty patients (76.9%) had hemoptysis. An alveolar airspace filling pattern was found in most of patients (59%). All the patients had a drop in hemoglobin level that ranged from 1.0 to 3.0 g/dL. BAL fluid was macroscopically bloody in 43.6% of patients (n = 17) and showed siderophagic alveolitis on BAL cytology in 100%. All patients received high doses of corticosteroids. Other additional treatments were antibiotics (53,8%, n = 21), intravenous cyclophosphamide (87.2%, n = 34), plasma exchange (35.9%, n = 14); intravenous immunoglobulin (12.8%, n = 5) and rituximab in 5 patients (12.8%). Mortality rate was higher amongst patients who required dialysis (50.0 vs 15.4%, p = 0.045), with SaO2 <90% at admission (50.0 vs 5.3%, p = 0.003) or those who required mechanical ventilation (76.9 vs 6.8%, p = < 0.001). CONCLUSION: DAH may present without hemoptysis and requires an early bronchoscopy to confirm the diagnosis and exclude infection. Other characteristics could be included in the abstract which are relevant to the paper. (relation between mortality, dialysis, ventilation, etc.).

Breaking out of the comfort zone: El Niño-Southern Oscillation as a driver of trophic flows in a benthic consumer of the Humboldt Current ecosystem.

The trophic flow of a species is considered a characteristic trait reflecting its trophic position and function in the ecosystem and its interaction with the environment. However, climate patterns are changing and we ignore how patterns of trophic flow are being affected. In the Humboldt Current ecosystem, arguably one of the most productive marine systems, El Niño-Southern Oscillation is the main source of interannual and longer-term variability. To assess the effect of this variability on trophic flow we built a 16-year series of mass-specific somatic production rate (P/B) of the Peruvian scallop (Argopecten purpuratus), a species belonging to a former tropical fauna that thrived in this cold ecosystem. A strong increase of the P/B ratio of this species was observed during nutrient-poor, warmer water conditions typical of El Niño, owing to the massive recruitment of fast-growing juvenile scallops. Trophic ecology theory predicts that when primary production is nutrient limited, the trophic flow of organisms occupying low trophic levels should be constrained (bottom-up control). For former tropical fauna thriving in cold, productive upwelling coastal zones, a short time of low food conditions but warm waters during El Niño could be sufficient to waken their ancestral biological features and display massive proliferations.

Evaluation of VEGF gene polymorphisms and proliferative diabetic retinopathy in Mexican population.

AIM: To assess if the included vascular endothelial growth factor (VEGF) polymorphisms rs3025035, rs3025021 and rs2010963 are associated to proliferative retinopathy in a Mexican population with type 2 diabetes mellitus (T2DM). METHODS: A case-control study was conducted in adult individuals with T2DM associated to proliferative retinopathy or non-proliferative retinopathy from Oct. 2014 to Jun. 2015 from the Retina Department of the Asociation to Prevent Blindness in Mexico. The selected patients were adults with a diagnosis of T2DM ≥5y. All subjects had a comprehensive ocular examination and the classification of the retinopathy severity was made considering the Early Treatment Diabetic Retinopathy Study (ETDRS) standardization protocols. Genomic DNA was extracted from whole fresh blood. All samples were genotyped by qPCR for selected VEGF polymorphisms. Hardy-Weinberg equilibrium was calculated by comparing Chi-square values between the expected and the observed values for genotype counts. RESULTS: In total 142 individuals were enrolled, 71 individuals with T2DM and associated proliferative retinopathy and 71 individuals with non-proliferative retinopathy. One-sided Fisher's exact test was performed for rs3025021 [OR (95% CI)=0.44(0.08-2.2); P=0.25] and rs2010963 [OR (95% CI)=0.63(0.25-1.6); P=0.23]. The minor allelic frequencies obtained were 26% for rs3025021, 10% for rs3025035 and 61% for rs2010963. The pairwise linkage disequilibrium between the three SNP was assessed, and was as follows: rs3025021 vs rs3025035: D'=1.0, r2=0.1043, P≤0.0001; rs3025021 vs rs2010963: D'=0.442, r2=0.0446, P=0.149; rs3025035 vs rs2010963: D'=0.505, r2=0.0214, P=0.142. CONCLUSION: This is the first analysis involving VEGF polymorphisms and proliferative diabetic retinopathy in a Mexican population. A major finding of the present study is that none of the polymorphisms studied was significantly associated with proliferative retinopathy. Based on these results, we can infer that different populations have different associations for the same polymorphisms.

Exantema laterotorácico unilateral en un adulto: reporte de un caso relacionado a infección por mycoplasma pneumoniae / Unilateral laterothoracic exanthem in an adult: report of a case related to mycoplasma pneumoniae infection

El exantema laterotorácico unilateral de la infancia (ULE) es una condición benigna, de etiología desconocida, que se caracteriza por un exantema maculopapular que típicamente afecta, de forma unilateral, un pliegue axilar con posterior diseminación centrífuga. Paciente de 19 años, sin antecedentes mórbidos que presentó una erupción cutánea pruriginosa de inicio en la axila derecha con posterior diseminación a la axila contralateral y pliegues inguinales. Acude con exámenes de laboratorios en los que destaca serología positiva para Mycoplasma pneumoniae. El exantema laterotorácico unilateral de la infancia es una erupción benigna de presentación característica en niños pero que también se puede presentar en adultos. Su etiología es desconocida, pero su presentación en relación a fiebre, síntomas infecciosos respiratorios y gastrointestinales antes o durante el exantema, sugieren un origen viral o bacteriano. En este caso, planteamos como posible agente etiológico a Mycoplasma pneumoniae.

Unilateral laterothoracic exanthem of childhood, is a benign condition of unknown etiology that is characterized by a maculopapular exanthema that typically affects one axillary fold followed by centrifugal dissemination. A 19-yearold male patient, healthy, who developed an axillary pruritic rash followed by dissemination to contralateral axillar and inguinal folds. He had laboratory tests with positive serology for Mycoplasma pneumoniae. Unilateral laterothoracic exanthem of childhood is a benign condition that characteristically presents during childhood but can also affect adults. It has an unknown etiology but its presentation in relation with fever, infectious symptoms respiratory and gastrointestinal diseases, suggest a viral or bacterial origin. In this case we raise Mycoplasma pneumoniae as possible etiologic agent.

Role of Cysteine Residues in the Carboxyl-Terminus of the Follicle-Stimulating Hormone Receptor in Intracellular Traffic and Postendocytic Processing.

Posttranslational modifications occurring during the biosynthesis of G protein-coupled receptors include glycosylation and palmitoylation at conserved cysteine residues located in the carboxyl-terminus of the receptor. In a number of these receptors, these modifications play an important role in receptor function and particularly, in intracellular trafficking. In the present study, the three cysteine residues present in the carboxyl-terminus of the human FSHR were replaced with glycine by site-directed mutagenesis. Wild-type and mutant (Cys627/629/655Gly) FSHRs were then transiently expressed in HEK-293 cells and analyzed for cell-surface plasma membrane expression, agonist-stimulated signaling and internalization, and postendocytic processing in the absence and presence of lysosome and/or proteasome inhibitors. Compared with the wild-type FSHR, the triple mutant FSHR exhibited ~70% reduction in plasma membrane expression as well as a profound attenuation in agonist-stimulated cAMP production and ERK1/2 phosphorylation. Incubation of HEK-293 cells expressing the wild-type FSHR with 2-bromopalmitate (palmitoylation inhibitor) for 6 h, decreased plasma membrane expression of the receptor by ~30%. The internalization kinetics and ß-arrestin 1 and 2 recruitment were similar between the wild-type and triple mutant FSHR as disclosed by assays performed in non-equilibrium binding conditions and by confocal microscopy. Cells expressing the mutant FSHR recycled the internalized FSHR back to the plasma membrane less efficiently than those expressing the wild-type FSHR, an effect that was counteracted by proteasome but not by lysosome inhibition. These results indicate that replacement of the cysteine residues present in the carboxyl-terminus of the FSHR, impairs receptor trafficking from the endoplasmic reticulum/Golgi apparatus to the plasma membrane and its recycling from endosomes back to the cell surface following agonist-induced internalization. Since in the FSHR these cysteine residues are S-palmitoylated, the data presented emphasize on this posttranslational modification as an important factor for both upward and downward trafficking of this receptor.

Enfermedad pulmonar intersticial difusa asociada a vasculitis ANCA / Interstitial lung disease diffuse associated with ANCA vasculitis

Hugo Karlen: Presentamos un paciente masculino de 72 años, casado, nacido en la Provincia de Buenos Aires, no tabaquista, jubilado, ex trabajador de la industria textil. En agosto del 2013, consultó por astenia, adinamia e hiporexia, asociado a pérdida de peso (6 kilos en los 3 meses previos). Concomitantemente, refería equivalentes febriles, poliartralgias de pequeñas y grandes articulaciones asimétricas que cedían con antiinflamatorios no esteroideos y parestesias en miembros inferiores. Presentaba antecedentes personales de hipertensión arterial, glaucoma, rinitis alérgica y cáncer de próstata por lo que recibió tratamiento con quimioterapia y radioterapia. Dentro de los antecedentes respiratorios, tiene historia de asma de 30 años de evolución en tratamiento con budesonide-formoterol, al momento de la consulta controlada. El cuadro fue interpretado como bisinosis. En 2010, por presentar episodios a repetición de disnea progresiva y tos, se arribó al diagnóstico de fibrosis pulmonar idiopática (FPI)

Evaluación del uso de corticoides inhalados en altas dosis para el tratamiento de crisis asmática / Evaluation of the Use of High-dose Inhaled Corticosteroids for the Treatment of Acute Asthma

Introducción: El asma es una enfermedad heterogénea caracterizada por la inflamación crónica de la vía aérea. Se caracteriza por síntomas respiratorios como sibilancias, disnea, opresión en el pecho, tos que varía en el tiempo y en la intensidad, además de presentar limitación variable al flujo aéreo. Afecta del 1 al 18% de la población mundial. Existe evidencia que sugiere que los corticoides inhalados pueden mostrar efectos terapéuticos tempranos (< 3 h). Esta rápida respuesta se encontraría vinculada a un efecto tópico (vasoconstricción de la mucosa de la vía aérea), debido a la potenciación del efecto adrenérgico por modificación de los receptores post-sinápticos. Materiales y métodos: Se realizó un estudio prospectivo, aleatorizado, analítico, longitudinal de cohorte y experimental, en pacientes con crisis de asma atendidos en la guardia externa del Hospital de Rehabilitación Respiratoria María Ferrer. Resultados: Se evaluó a un total de 71 pacientes en un período de 10 meses, todos ingresaron por el servicio de guardia del Hospital de Rehabilitación Respiratoria María Ferrer y accedieron a participar del protocolo firmando un consentimiento informado. Ambos grupos presentaron un 63% de respuesta significativa (FEV1 > 60%) a los 30 minutos de iniciado el tratamiento (p: 0.72). Al fnal del protocolo (180 minutos), el grupo control (salbutamol + bromuro de ipratropio) presentó 3 pacientes que no lograron el objetivo del FEV1 > 60% a comparación de 2 pacientes en el grupo tratado con corticoides inhalados a altas dosis (P: 0.97). Conclusión: Actualmente el uso de corticoides inhalados a altas dosis en crisis de asma es una opción terapéutica para pacientes con crisis moderadas a severas. Nuestro estudio no obtuvo valores significativos que apoyen el uso de esta medicación para reducir la incidencia de internaciones o mejorar significativamente la función pulmonar.

Introduction: Asthma is a heterogeneous disease characterized by chronic inflammation of the airways. Its more common respiratory symptoms such as wheezing, breathlessness, chest tightness and cough vary in time and intensity, in addition to displaying variable airflow limitation. Asthma affects 1 to 18% of the world population. Evidence suggests that inhaled corticosteroids may show early therapeutic effects (<3 hours). This quick response would be linked to a local effect (vessel constriction of the airway mucosa) due to the potentiation of the adrenergic effect that modifies the postsynaptic receptors. Materials and methods: A prospective, randomized, analytical and experimental longitudinal cohort study in patients with acute asthma treated at the emergency services of the Respiratory Rehabilitation Hospital Maria Ferrer, Buenos Aires. Results: A total of 71 patients were evaluated over a period of 10 months who had agreed to participate in the study by signing an informed consent. Both the study and the control groups had a 63% significant response (FEV1> 60%) within 30 minutes of starting treatment (p = 0.72). At the end of the observation (180 minutes), three patients of the control group (Salbutamol + ipratropium bromide) did not achieve the objective of FEV1> 60% compared to 2 patients in the study group treated with high-dose inhaled corticosteroids (P group: 0.97). Conclusion: Currently the use of high-dose inhaled corticosteroids in asthma attack is a therapeutic option for patients with moderate to severe crisis. The results of our study do not provide significant evidence in support of the use of this medication to reduce the incidence of hospitalizations or improve the lung function.

The gonadotropin-releasing hormone system: Perspectives from reproduction to cancer (Review).

Recently, an increasing amount of evidence indicates that human gonadotropin-releasing hormone (hGnRH) and its receptor (hGnRHR) are important regulatory components not only to the reproduction process but also in the regulation of some cancer cell functions such as cell proliferation, in both hormone-dependent and -independent types of tumors. The hGnRHR is a naturally misfolded protein that is retained mostly in the endoplasmic reticulum; however, this mechanism can be overcome by treatment with several pharmacoperones, therefore, increasing the amount of receptors in the cell membrane. In addition, several reports indicate that the expression level of hGnRHR in tumor cells is even lower than in pituitary or gonadotrope cells. The signal transduction pathways activated by hGnRH in both gonadotrope and different cancer cell types are described in the present review. We also discuss how the rescue of misfolded receptors in tumor cells could be a promising strategy for cancer therapy.

ETHNICITY AND INCOME IMPACT ON BMI AND STATURE OF SCHOOL CHILDREN LIVING IN URBAN SOUTHERN MEXICO.

Obesity affects quality of life and increases the risk of morbidity and mortality. Mexico, a middle-income country, has a high prevalence of overweight and obesity among urban children. Merida is the most populated and growing city in southern Mexico with a mixed Mayan and non-Maya population. Local urbanization and access to industrialized foods have impacted the eating habits and physical activity of children, increasing the risk of overweight and obesity. This study aimed to contribute to the existing literature on the global prevalence of overweight and obesity and examined the association of parental income, ethnicity and nutritional status with body mass index (BMI) and height in primary school children in Merida. The heights and weights of 3243 children aged 6-12 from sixteen randomly selected schools in the city were collected between April and December 2012. Multinomial logistic regression models were used to examine differences in the prevalence of BMI and height categories (based on WHO reference values) by ethnicity and income levels. Of the total students, 1648 (50.9%) were overweight or obese. Stunting was found in 227 children (7%), while 755 (23.3%) were defined as having short stature. Combined stunting and overweight/obesity was found in 301 students (9.3%) and twelve (0.4%) were classified as stunted and of low weight. Having two Mayan surnames was inversely associated with having adequate height (OR=0.69, p<0.05) and the presence of two Maya surnames in children increased the odds of short stature and stunting. Children from lower income families had twice the odds of being stunted and obese. Overweight, obesity and short stature were frequent among the studied children. A significant proportion of Meridan children could face an increased risk of developing cardiovascular disease and its associated negative economic and social outcomes unless healthier habits are adopted. Action is needed to reduce the prevalence of obesity among southern Mexican families of all ethnic groups, particularly those of lower income.

Aumento de la captación de 18 fluordeoxiglucosa (FDG) en miembro inferior izquierdo en un paciente con cáncer de pulmón resecado / Increase in uptake of 18 fluordeoxyglucose (FDG) in limb lower left in a patient with resected lung cancer

Presentamos el caso de un hombre de 72 años de edad con un diagnóstico previo de cáncer de piel escamoso realizado en otra institución un año previo a la consulta. Una radiografía de tórax de rutina reveló una pequeña radiopacidad sobre el campo superior del pulmón derecho. Una tomografía computarizada de tórax con contraste (TC) mostró una opacidad del lóbulo superior derecho de características en vidrio esmerilado (14 × 11 mm), sin adenopatías mediastínicas y sin compromiso de la pared torácica (Figura 1). Los médicos a cargo del paciente consideraron que una segmentectomía era el procedimiento de elección por no poder afirmar previamente a la cirugía si el nódulo era maligno o no y, si era maligno, diferenciar en el acto intraoperatorio si se trataba de un tumor pulmonar primario o una metástasis de pulmón del carcinoma de células escamosas de la piel. La anatomía patológica finalmente mostró una variante mucinosa de adenocarcinoma in situ. Fue completamente resecado. Todos los ganglios linfáticos fueron benignos. El seguimiento postoperatorio fue sin complicaciones y el paciente fue externado en el quinto día luego de la cirugía. El paciente regresó a sus actividades previas (incluyendo caminatas diarias) en el término de dos semanas

"You are not fat, you are hermosa": Mexican caregivers share their perceptions about their role supporting their morbidly obese children.

This qualitative study reports the findings from 6 focus groups conducted at a clinic in Southern Mexico with caregivers of morbidly obese children. This study was developed with the purpose of gaining a further understanding of caregivers' perceived role in addressing their children's obesity within the family context and identifying topics that could be considered when providing health care in similar sociocultural environments. We identified that although caregivers acknowledge the role of modifiable factors in obesity prevention and treatment, they held beliefs about determinism in obesity. In addition, diet was the more frequently identified means of reducing the impact of obesity. The importance of role modeling and promoting healthy behaviors in the family context are topics that could be addressed in clinical practice.

Metástasis endobronquial por patología maligna extratorácica / Endobronchial metastasis from extrathoracic malignancy

Paciente de sexo femenino de 55 años de edad, con diagnóstico de melanoma cutáneo en miembro inferior izquierdo hace 3 años, que evolucionó con remisión completa posterior al tratamiento quirúrgico. Un mes antes de su ingreso, presentó disnea y expectoración mucosa de coloración oscura. Al ingreso no presentaba estridor, ortopnea ni tos. En el examen físico se auscultaron sibilancias inspiratorias en hemitórax derecho, murmullo vesicular conservado e hipoventilación generalizada. La tomografía de tórax mostró la presencia de una masa endoluminal en el tercio inferior de la tráquea con compromiso hasta el bronquio fuente derecho, generando una obstrucción de casi el 90% de la vía aérea

Fibrobroncoscopía en pacientes con hemoptisis no masiva y radiografía de tórax más tomografía de tórax no localizadoras

Introducción: La necesidad de la fibrobroncoscopía (FBC) en pacientes con hemoptisis y radiografía de tórax (RxTx) no localizadora (NL) es todavía controversial, aunque en general continúa siendo el procedimiento recomendado como rutina de evaluación. Objetivo: Determinar la rentabilidad diagnóstica de la FBC en pacientes con hemoptisis y RxTxNL. Material y métodos: Se analizaron en forma retrospectiva los registros estandarizados de 340 FBC realizadas en forma programada entre enero de 2008 y diciembre 2012 en un único centro. La hemoptisis fue clasificada como trivial (esputo hemoptoico), leve (menos de 100 ml en 24 horas) y moderada (100-500 mL en 24 horas). El procedimiento se realizo en los primeros 7 días de hemoptisis, y se consideraba positiva si se obtenía el diagnóstico final. Resultados: De 396 pacientes, 102 (25,7

) tenían indicación de fibrobroncoscopia por hemoptisis, de los cuales, 52 presentaba Rx de Tórax no localizadora. En el 42.3

de los casos, la tomografía proveyó información diagnóstica adicional. 30 pacientes (29,4

Introduction: The exact role of fiberoptic bronchoscopy (FOB) in the diagnosis of patients presenting with haemoptysis and with normal or non-localizing chest radiography and CT scan has not been clearly defined. Objective: The aim of this study was to examine the yield of FOB in patients with haemoptysis and normal findings on chest roentgenogram and CT scan. Methods: We reviewed the medical records of all consecutive patients undergoing elective flexible bronchoscopy between January 2008 and December 2012. All patients underwent FOB within 7 days of active bleeding. Amount of bleeding was classified as trivial (drops of blood, bloody sputum), mild < 100 mL in 24 h and moderate 100-500 mL in 24 h. Bronchoscopy was considered positive if it led to the final diagnosis. We also assessed whether the bronchoscopic evaluation located the bleeding site. Results: Amongst 396 patients examined with FOB, in 102 patients (25.7

) FOB was prescribed for evaluation of haemoptysis; in 52 patients with haemoptysis, the chest radiography was normal. In 42.3

of these patients, CT scan provided additional diagnostic information. In 30 patients (29.4

de todos los casos de hemoptisis) presentaron radiografía y tomografía no localizadora. En un paciente el hallazgo broncoscópico fue un carcinoma bronquial no sospechado. 7 pacientes tenían hallazgos endobronquiales benignos. Todos los pacientes que presentaron hallazgos positivos en la fibrobroncoscopía eran tabaquistas, mayores de 40 años, tenían alguna sospecha clínica previa o presentaban hemoptisis por más de 1 semana. Todos los pacientes asintomáticos, menores de 40 años y con hemoptisis menor a los 7 días, la fibrobroncoscopía fue normal. Conclusión: En los pacientes con hemoptisis, mayores de 40 años, con antecedentes de tabaquismo y síntomas constitucionales se obtiene una alta rentabilidad diagnóstica cuando se asocian la Tomografía computada de tórax y la FBC, pero pueden evitarse en ausencia de estas condiciones o si existe la sospecha clínica de otras causas identificables.(AU)

of all the haemoptysis cases), CXR and CT did not show images which could explain the haemoptysis . Bronchoscopy findings showed an unsuspected bronchial carcinoma in one patient. In seven patients FOB disclosed some benign abnormality. All patients with a positive finding in the FOB were smokers, older than 40 years, had some clinical suspicion and had suffered haemoptysis for more than one week. FOB was normal in asymptomatic patients, who were younger than 40 years and with hemoptysis lasting less than one week. Conclusion: In patients older than 40 years, smokers, with constitutional symptoms or with hemoptysis lasting for more than one week the combined use of bronchoscopy and chest CT gives the best diagnostic yield. In younger, asymptomatic, non-smoking patients with haemoptysis and normal CT scan, further investigations may not be justified, but these results need to be confirmed in a prospective multicenter study.(AU)

Fibrobroncoscopía en pacientes con hemoptisis no masiva y radiografía de tórax más tomografía de tórax no localizadoras / Fiberoptic Bronchoscopy in Patients with non Massive Haemoptysis and non Explainable Images in Chest Radiography and Tomography

Introducción: La necesidad de la fibrobroncoscopía (FBC) en pacientes con hemoptisis y radiografía de tórax (RxTx) no localizadora (NL) es todavía controversial, aunque en general continúa siendo el procedimiento recomendado como rutina de evaluación. Objetivo: Determinar la rentabilidad diagnóstica de la FBC en pacientes con hemoptisis y RxTxNL. Material y métodos: Se analizaron en forma retrospectiva los registros estandarizados de 340 FBC realizadas en forma programada entre enero de 2008 y diciembre 2012 en un único centro. La hemoptisis fue clasificada como trivial (esputo hemoptoico), leve (menos de 100 ml en 24 horas) y moderada (100-500 mL en 24 horas). El procedimiento se realizo en los primeros 7 días de hemoptisis, y se consideraba positiva si se obtenía el diagnóstico final. Resultados: De 396 pacientes, 102 (25,7%) tenían indicación de fibrobroncoscopia por hemoptisis, de los cuales, 52 presentaba Rx de Tórax no localizadora. En el 42.3% de los casos, la tomografía proveyó información diagnóstica adicional. 30 pacientes (29,4% de todos los casos de hemoptisis) presentaron radiografía y tomografía no localizadora. En un paciente el hallazgo broncoscópico fue un carcinoma bronquial no sospechado. 7 pacientes tenían hallazgos endobronquiales benignos. Todos los pacientes que presentaron hallazgos positivos en la fibrobroncoscopía eran tabaquistas, mayores de 40 años, tenían alguna sospecha clínica previa o presentaban hemoptisis por más de 1 semana. Todos los pacientes asintomáticos, menores de 40 años y con hemoptisis menor a los 7 días, la fibrobroncoscopía fue normal. Conclusión: En los pacientes con hemoptisis, mayores de 40 años, con antecedentes de tabaquismo y síntomas constitucionales se obtiene una alta rentabilidad diagnóstica cuando se asocian la Tomografía computada de tórax y la FBC, pero pueden evitarse en ausencia de estas condiciones o si existe la sospecha clínica de otras causas identificables.

Introduction: The exact role of fiberoptic bronchoscopy (FOB) in the diagnosis of patients presenting with haemoptysis and with normal or non-localizing chest radiography and CT scan has not been clearly defined. Objective: The aim of this study was to examine the yield of FOB in patients with haemoptysis and normal findings on chest roentgenogram and CT scan. Methods: We reviewed the medical records of all consecutive patients undergoing elective flexible bronchoscopy between January 2008 and December 2012. All patients underwent FOB within 7 days of active bleeding. Amount of bleeding was classified as trivial (drops of blood, bloody sputum), mild < 100 mL in 24 h and moderate 100-500 mL in 24 h. Bronchoscopy was considered positive if it led to the final diagnosis. We also assessed whether the bronchoscopic evaluation located the bleeding site. Results: Amongst 396 patients examined with FOB, in 102 patients (25.7%) FOB was prescribed for evaluation of haemoptysis; in 52 patients with haemoptysis, the chest radiography was normal. In 42.3% of these patients, CT scan provided additional diagnostic information. In 30 patients (29.4% of all the haemoptysis cases), CXR and CT did not show images which could explain the haemoptysis . Bronchoscopy findings showed an unsuspected bronchial carcinoma in one patient. In seven patients FOB disclosed some benign abnormality. All patients with a positive finding in the FOB were smokers, older than 40 years, had some clinical suspicion and had suffered haemoptysis for more than one week. FOB was normal in asymptomatic patients, who were younger than 40 years and with hemoptysis lasting less than one week. Conclusion: In patients older than 40 years, smokers, with constitutional symptoms or with hemoptysis lasting for more than one week the combined use of bronchoscopy and chest CT gives the best diagnostic yield. In younger, asymptomatic, non-smoking patients with haemoptysis and normal CT scan, further investigations may not be justified, but these results need to be confirmed in a prospective multicenter study.

Una causa poco frecuente de empiema en un varón inmunocompetente / A Rare Cause of Empyema in an Immunocompetent Male

La coccidiodomicosis es una micosis sistémica endémica de América, producida por los hongos del género Coccidioides, C. immitis y C. posadasii. La mayor parte de las infecciones son benignas y autolimitadas, muy pocas desarrollan una enfermedad pulmonar grave y, un porcentaje mínimo, una enfermedad diseminada. Las infecciones complicadas del espacio pleural se han comunicado en muy pocos casos en la literatura. Se presenta el caso de un paciente inmunocompetente con una forma cavitada extensa asociada a empiema.

Coccidioidomycosis is a systemic mycosis endemic in America, caused by Coccidioides immitis and Coccidioides posadasii. Most of the infections are mild and self-limited; only a few of them develop a serious lung disease and a much smaller proportion cause a systemic disease. A few cases of infections complicating the pleural space infections have been reported in the literature. We present a case of an immunocompetent patient, with a pulmonary Coccidiodiomycosis with extensive cavitary dissease associated to empyema.

Una causa poco frecuente de empiema en un varón inmunocompetente

La coccidiodomicosis es una micosis sistémica endémica de América, producida por los hongos del género Coccidioides, C. immitis y C. posadasii. La mayor parte de las infecciones son benignas y autolimitadas, muy pocas desarrollan una enfermedad pulmonar grave y, un porcentaje mínimo, una enfermedad diseminada. Las infecciones complicadas del espacio pleural se han comunicado en muy pocos casos en la literatura. Se presenta el caso de un paciente inmunocompetente con una forma cavitada extensa asociada a empiema.(AU)

Coccidioidomycosis is a systemic mycosis endemic in America, caused by Coccidioides immitis and Coccidioides posadasii. Most of the infections are mild and self-limited; only a few of them develop a serious lung disease and a much smaller proportion cause a systemic disease. A few cases of infections complicating the pleural space infections have been reported in the literature. We present a case of an immunocompetent patient, with a pulmonary Coccidiodiomycosis with extensive cavitary dissease associated to empyema.(AU)