Utility of artificial intelligence for detection of pneumothorax on chest radiopgraphs done after transthoracic percutaneous transthoracic biopsy guided by computed tomography.

OBJETIVE: To assess the ability of an artificial intelligence software to detect pneumothorax in chest radiographs done after percutaneous transthoracic biopsy. MATERIAL AND METHODS: We included retrospectively in our study adult patients who underwent CT-guided percutaneous transthoracic biopsies from lung, pleural or mediastinal lesions from June 2019 to June 2020, and who had a follow-up chest radiograph after the procedure. These chest radiographs were read to search the presence of pneumothorax independently by an expert thoracic radiologist and a radiodiagnosis resident, whose unified lecture was defined as the gold standard, and the result of each radiograph after interpretation by the artificial intelligence software was documented for posterior comparison with the gold standard. RESULTS: A total of 284 chest radiographs were included in the study and the incidence of pneumothorax was 14.4%. There were no discrepancies between the two readers' interpretation of any of the postbiopsy chest radiographs. The artificial intelligence software was able to detect 41/41 of the present pneumothorax, implying a sensitivity of 100% and a negative predictive value of 100%, with a specificity of 79.4% and a positive predictive value of 45%. The accuracy was 82.4%, indicating that there is a high probability that an individual will be adequately classified by the software. It has also been documented that the presence of Port-a-cath is the cause of 8 of the 50 of false positives by the software. CONCLUSIONS: The software has detected 100% of cases of pneumothorax in the postbiopsy chest radiographs. A potential use of this software could be as a prioritisation tool, allowing radiologists not to read immediately (or even not to read) chest radiographs classified as non-pathological by the software, with the confidence that there are no pathological cases.

Biopsia guiada por ecografía para el diagnóstico de masas ováricas. Revisión sistemática / Ecography guided biopsy for the diagnosis of ovarian masses. Systematic review

El diagnóstico definitivo del cáncer de ovario precisa de confirmación histológica. En determinadas situaciones, para evitar la morbilidad de la resección quirúrgica, es posible hacer una biopsia guiada por ecografía para obtener el diagnóstico anatomopatológico. El objetivo de esta revisión sistemática fue evaluar la adecuación, fiabilidad, precisión y perfil de seguridad de la biopsia guiada por ecografía de masas ováricas. Siguiendo el modelo PRISMA 2020, se hizo una búsqueda bibliográfica en PubMed, Embase y Scopus y se recopilaron un total de 10.245 artículos, de los cuales 24 fueron finalmente incluidos. Los trabajos incluían de forma mayoritaria pacientes con tumores inoperables avanzados, pobre performance status y otros factores de mal pronóstico, con masas de contenido sólido y márgenes irregulares, generalmente accesibles por vía transvaginal. En la mayoría de los artículos las pacientes presentaban historia previa de malignidad o tumores inoperables en estadios avanzados. Las masas ováricas biopsiables se definían en la ecografía como malignas o potencialmente malignas, con la presencia destacada de un componente sólido o mixto con márgenes irregulares o heterogéneos. La técnica más utilizada en los estudios incluidos fue la biopsia con aguja gruesa o tru-cut, con altos valores de adecuación, fiabilidad, precisión y rendimiento, así como un buen perfil de seguridad y bajas tasas de complicaciones. En conclusión, la biopsia con aguja gruesa de las masas anexiales guiada por ecografía, en pacientes subsidiarios de tratamiento neoadyuvante, es una técnica con altas tasas de adecuación, fiabilidad, precisión y buen perfil de seguridad.(AU)

The definitive diagnosis of ovarian cancer requires histological confirmation. In certain situations, to avoid the morbidity of surgical resection, it is possible to perform an ultrasound-guided biopsy to obtain the pathological diagnosis. The aim of this systematic review was to assess the adequacy, reliability, accuracy, and safety profile of ultrasound-guided biopsy of ovarian masses. Following the PRISMA 2020 model, a bibliographic search was carried out in PubMed, Embase and Scopus, collecting a total of 10,245 articles, of which 24 were finally included. The studies mainly included patients with advanced inoperable tumors, poor performance status and other poor prognostic factors, with masses of solid content and irregular margins, generally accessible through the transvaginal route. In most of the articles, the patients had a previous history of malignancy or had inoperable tumors in advanced stages. Biopsiable ovarian masses were defined ultrasonographically as malignant or potentially malignant, mainly highlighting the presence of a solid or mixed component and irregular or heterogeneous margins. The most widely used technique in the included studies was core needle or tru-cut biopsy, presenting high values of adequacy, reliability, precision and performance, as well as a good safety profile with low complication rates. In conclusion, ultrasound-guided core needle biopsy of adnexal masses in patients eligible for neoadjuvant treatment is a technique with high adequacy, reliability, and precision rates, as well as a good safety profile.(AU)

Agreement between incisional and excisional biopsies for hormone receptors and her2 in breast cancer.

INTRODUCTION: Breast cancer is the leading cause of cancer mortality in Mexican women. OBJECTIVE: The objective of the study was to identify concordances among core needle biopsy (CNB) and excisional biopsies (EB) regarding diagnosis, hormonal receptors (HR), and human epidermal growth factor receptor 2 (Her2). MATERIALS AND METHODS: Core number, demographic data, histological type, and treatment were documented for each sample. Reported HR and Her2 score from both samples were compiled. RESULTS: 70 women with both CNB/EB were included. Median age was 58 (36-87) years; initial diagnosis in CNB were invasive ductal 56 (80%), lobular 10 (14%), and mixed 4 (6%) carcinomas. Diagnostic agreement among CNB and EB was of 97%, k = 0.65. A concordance of 92% (k = 0.75), 75% (k = 0.26), and 67% (k = 0.46) was observed for estrogen receptors, progesterone receptors, and Her2 determinations, and positive predictive values in CNB were 0.96, 0.89, and 0.44, respectively. CONCLUSION: HR and Her2 concordances using manual-immunohistochemistry (IHC) were found within the range of values obtained using automatized-IHC. When compared to tumor heterogeneity, technical/reading errors contribute more to discordances.

INTRODUCTION: El cáncer de mama es la principal causa de mortalidad por cáncer en mujeres mexicanas. OBJETIVO: Identificar la concordancia entre la biopsia con aguja de corte (BAC) y la biopsia escisional (BE) con respecto al diagnóstico, receptores hormonales (RH) y Her2. MATERIAL Y MÉTODOS: Se registró el número de fragmentos cilíndricos, datos demográficos, tipo histológico y tratamiento. Se recopilaron resultados de RH y Her2. RESULTADOS: Se incluyeron 70 mujeres con mediana de edad de 58 años. El diagnóstico inicial en BAC fue carcinoma ductal invasivo 56 (80%), lobular 10 (14%) y mixtos 4 (6%). El acuerdo de diagnóstico entre BAC y BE fue del 97%, k = 0.65. Se observó una concordancia de 92% (k = 0.75), 75% (k = 0.26) y 67% (k = 0.46) para las determinaciones de receptor de estrógenos (RE), receptor de progesterona (RP) y Her2, y los valores predictivos positivos en BAC fueron 0.96, 0.89 y 0.44, respectivamente. CONCLUSIÓN: Los RH y la concordancia de Her2 mediante inmunohistoquímica (IHC) manual se encuentran dentro del rango de valores obtenidos mediante el uso de IHC automatizada. Los errores técnicos/de lectura contribuyeron más a discordancia que la heterogeneidad tumoral.

Presentación clínica y hallazgos radiográficos de pacientes con diagnóstico histopatológico de mastitis granulomatosa idiopática / Clinical presentation and radiological findings of patients with histopathological diagnosis of idiopathic granulomatous mastitis

INTRODUCCIÓN. La mastitis granulomatosa idiopática es una patología inflamatoria benigna de mama con clínica y hallazgos imagenológicos no específicos; usualmente confundida con cáncer de mama. El síntoma más frecuente es una masa mamaria palpable. El diagnóstico es histopatológico. OBJETIVO. Describir el perfil demográfico, presentación clínica y hallazgos radiográficos de pacientes con diagnóstico histopatológico de mastitis granulomatosa idiopática. MATERIALES Y MÉTODOS. Estudio observacional, descriptivo, retrospectivo. Población de 1130 y muestra de 49 datos de historias clínicas electrónicas de pacientes con diagnóstico histológico de mastitis granulomatosa idiopática con el código CIE10 N61x Trastornos Inflamatorios de la mama, atendidas en la Unidad Técnica de Imagenología del Hospital de Especialidades Carlos Andrade Marín en la ciudad de Quito entre enero 2019 hasta diciembre 2021. El criterio de inclusión fue la confirmación histopatológica de mastitis granulomatosa idiopática. Los criterios de exclusión: antecedentes de neoplasia maligna de mama, antecedentes de HIV, patología inflamatoria sistémica como granulomatosis de Wegener, sarcoidosis, infecciones granulomatosas crónicas como tuberculosis, brucelosis, histoplasmosis, sífilis y reacciones a cuerpos extraños como material de implantes mamarios. Se analizaron datos demográficos, presentación clínica, hallazgos mamográficos, ecográficos y la categorización BIRADS. Se efectuó un análisis univarial; para las variables cualitativas se realizó frecuencias y porcentajes; para las variables cuantitativas se realizó medidas de tendencia central. La información recolectada fue analizada en el programa estadístico International Business Machines Statistical Package for the Social Sciences. RESULTADOS La mediana de la edad fue 36 años. El 94,00% de pacientes tenían por lo menos un hijo; 77,50% presentaron con una masa palpable; 55,10% se acompañaron de signos inflamatorios; 16,00% asociaron fístulas y 24,40% presentaron secreción. Solo 1 caso presentó afectación bilateral. CONCLUSIÓN En este estudio, la mastitis granulomatosa idiopática afecta a mujeres en edad reproductiva sin antecedentes de malignidad quienes presentan una masa mamaria palpable que puede estar acompañada de signos inflamatorios, colecciones y fístulas. La realización de una biopsia core eco guiada, para confirmar su diagnóstico.

INTRODUCTION. Idiopathic granulomatous mastitis is a benign inflammatory breast pathology with nonspecific clinical and imaging findings; usually mistaken for breast cancer. The most frequent symptom is a palpable breast mass. The diagnosis is histopathologic. OBJECTIVE. To describe the demographic profile, clinical presentation and radiographic findings of patients with histopathologic diagnosis of idiopathic granulomatous mastitis. MATERIALS AND METHODS. Observational, descriptive, retrospective study. Population of 1130 and sample of 49 data from electronic medical records of patients with histological diagnosis of idiopathic granulomatous mastitis with ICD10 code N61x Inflammatory disorders of the breast, attended at the Technical Imaging Unit of the Carlos Andrade Marín Specialties Hospital in the city of Quito between January 2019 and December 2021. The inclusion criterion was histopathological confirmation of idiopathic granulomatous mastitis. Exclusion criteria: history of malignant breast neoplasia, history of HIV, systemic inflammatory pathology such as Wegener's granulomatosis, sarcoidosis, chronic granulomatous infections such as tuberculosis, brucellosis, histoplasmosis, syphilis and reactions to foreign bodies such as breast implant material. Demographic data, clinical presentation, mammographic and ultrasound findings and BIRADS categorization were analyzed. Univariate analysis was performed; frequencies and percentages were used for qualitative variables; measures of central tendency were used for quantitative variables. RESULTS. The median age was 36 years. 94,00% of patients had at least one child; 77,50% presented with a palpable mass; 55,10% were accompanied by inflammatory signs; 16,00% were associated with fistulas and 24,40% presented with discharge. Only 1 case presented bilateral involvement. CONCLUSION. In this study, idiopathic granulomatous mastitis affects women of reproductive age with no history of malignancy who present with a palpable breast mass that may be accompanied by inflammatory signs, collections and fistulas. The performance of an echo-guided core biopsy to confirm the diagnosis.

Usefulness of ultrasound-guided core biopsy in thyroid nodules with inconclusive fine-needle aspiration biopsy findings.

OBJECTIVES: To determine the diagnostic performance of ultrasound-guided core-needle biopsy in thyroid nodules after two inconclusive fine-needle aspiration biopsies. To assess the complications of core-needle biopsy. To analyze the reliability of diagnoses obtained with core-needle biopsy. To measure the economic impact of avoiding lobectomies in patients with benign core-needle biopsy findings. MATERIAL AND METHODS: This retrospective study reviewed 195 core-needle biopsies in 178 patients. To determine the reliability of the core-needle biopsy findings, we compared the diagnosis from the core-needle specimen versus the histologic findings in the surgical specimens when core-needle biopsy findings indicated malignancy or follicular proliferation and versus the stability of the nodule on ultrasound follow-up for one year when core-biopsy findings indicated benignity. RESULTS: Core-needle biopsy yielded a diagnosis for 179 (91.7%) nodules, of which 122 (62.5%) were classified as benign, 50 (25.6%) as follicular proliferation, and 7 (3.6%) as malignant. The findings were inconclusive for 16 (8.3%) nodules. Minor complications were observed in 4 (2%) patients; no major complications were observed. The sensitivity of core-needle biopsy for the diagnosis of thyroid cancer was low (42.8%) because the technique was unable to detect capsular or vascular invasion, although the specificity and positive predictive value (PPV) were 100%. However, when we considered histologic findings of malignancy and follicular proliferation positive because both require surgical resection, the sensitivity increased to 97.5% and the PPV decreased to 83.3%. There were 79 nodules with ultrasound follow-up for at least one year; 76 (96.2%) had negative core-needle biopsy findings, and 74 (97.3%) of these remained stable. The negative predictive value (NPV) for malignancy of the benign nodules was 98.6%, although no malignant transformation was observed. Nevertheless, the results of the statistical analysis do not allow us to recommend forgoing ultrasound follow-up in patients with benign core-biopsy findings. The cost savings of avoiding lobectomy in patients with benign nodules and stability of the nodule on ultrasound follow-up for at least one year was about 90%. CONCLUSIONS: Core-needle biopsy of thyroid nodules is effective because it diagnoses more than 90% of nodules with inconclusive findings after fine-needle aspiration biopsy. It is safe if done by experienced professionals. It is reliable because it yields 100% specificity and 100% PPV for malignant nodule, 97.5% sensitivity for the detection of nodules that require surgery, and 98.6% NPV for benign nodules. It is efficient because it reduces the costs of diagnosis compared to lobectomy in benign nodules.

Utilidad de la biopsia con aguja gruesa ecoguiada en nódulos tiroideos con punción aspirativa con aguja fina no diagnóstica / Usefulness of ultrasound-guided core biopsy in thyroid nodules with inconclusive fine-needle aspiration biopsy findings

Objetivos: Conocer el rendimiento diagnóstico de la biopsia con aguja gruesa (BAG) ecoguiada en nódulos tiroideos con dos punciones aspirativas con aguja fina (PAAF) previas no diagnósticas. Evaluar complicaciones de la BAG. Analizar la fiabilidad de los diagnósticos obtenidos mediante BAG. Medir el impacto económico de evitar lobectomía tras BAG con resultado benigno. Material y métodos: Revisión retrospectiva de 195 BAG realizadas en 178 pacientes. Las referencias utilizadas para medir la fiabilidad de los resultados de la BAG fueron el análisis de la pieza quirúrgica tras una biopsia con malignidad o proliferación folicular (PF) y la estabilidad ecográfica superior a 1 año tras una BAG benigna. Se compararon costes directos de BAG más seguimiento ecográfico frente al que hubiera tenido realizar lobectomía sin complicaciones en los pacientes con estabilidad ecográfica superior a 1 año tras BAG benigna. Resultados: De los 195 nódulos sometidos a BAG, el resultado fue diagnóstico en 179 (91,7%), incluyendo 122 benignos (62,5%), 50 PF (25,6%) y 7 malignos (3,6%). No fue diagnóstico en 16 nódulos (8,3%). Hubo complicaciones menores en 4 pacientes (2%) y mayores en ninguno. La sensibilidad de la BAG para el diagnóstico de cáncer de tiroides fue baja (42,8%) por su incapacidad para detectar invasión capsular o vascular, aunque con especificidad y valor predictivo positivo (VPP) del 100%. Al considerar los diagnósticos de malignidad y PF como positivos, pues ambos obligan a resección quirúrgica, la sensibilidad ascendió al 97,5%, con descenso al 83,3% del VPP. Hubo 79 nódulos con seguimiento ecográfico superior a 1 año, 76 con BAG benigna (96,2%), de los cuales mostraron estabilidad 74 (97,3%). El valor predictivo negativo (VPN) para malignidad de los nódulos benignos fue del 98,6%, aunque no se detectó ninguna transformación maligna. Sin embargo, el análisis estadístico no permite recomendar la supresión del seguimiento ecográfico tras BAG benigna.(AU)

Objectives: To determine the diagnostic performance of ultrasound-guided core-needle biopsy in thyroid nodules after two inconclusive fine-needle aspiration biopsies. To assess the complications of core-needle biopsy. To analyze the reliability of diagnoses obtained with core-needle biopsy. To measure the economic impact of avoiding lobectomies in patients with benign core-needle biopsy findings. Material and methods: This retrospective study reviewed 195 core-needle biopsies in 178 patients. To determine the reliability of the core-needle biopsy findings, we compared the diagnosis from the core-needle specimen versus the histologic findings in the surgical specimens when core-needle biopsy findings indicated malignancy or follicular proliferation and versus the stability of the nodule on ultrasound follow-up for one year when core-biopsy findings indicated benignity. Results: Core-needle biopsy yielded a diagnosis for 179 (91.7%) nodules, of which 122 (62.5%) were classified as benign, 50 (25.6%) as follicular proliferation, and 7 (3.6%) as malignant. The findings were inconclusive for 16 (8.3%) nodules. Minor complications were observed in 4 (2%) patients; no major complications were observed. The sensitivity of core-needle biopsy for the diagnosis of thyroid cancer was low (42.8%) because the technique was unable to detect capsular or vascular invasion, although the specificity and positive predictive value (PPV) were 100%. However, when we considered histologic findings of malignancy and follicular proliferation positive because both require surgical resection, the sensitivity increased to 97.5% and the PPV decreased to 83.3%. There were 79 nodules with ultrasound follow-up for at least one year; 76 (96.2%) had negative core-needle biopsy findings, and 74 (97.3%) of these remained stable. The negative predictive value (NPV) for malignancy of the benign nodules was 98.6%, although no malignant transformation was observed.(AU)

[Minimally invasive percutaneous musculoskeletal biopsy performed by Interventional Pathologist for myopathy study. Twenty years of experience]. / Biopsia percutánea muscular mínimamente invasiva realizada por patólogo intervencionista en el estudio de miopatías. Veinte años de experiencia.

INTRODUCTION: Muscle biopsy plays a major role in the final diagnosis of myopathies. Open muscle biopsy is the benchmark procedure, although minimally invasive percutaneous muscle biopsy (MIPMB) has demonstrated comparable diagnostic performance at a lower cost and can be carried out by interventional pathologists. MATERIALS AND METHODS: Muscle biopsies performed from 1997 to 2017 were reviewed and classified according to the type of procedure, whether carried out by an interventional pathologist or another specialist, the diagnosis and the effectiveness of the procedure. RESULTS: 738 muscle biopsies were performed; 32% were open biopsies and 68% MIPMB carried out by pathologist. The muscle most often biopsied was the femoral quadriceps and the most frequent diagnosis was inflammatory myopathies. In only 39 cases (20 open biopsies and 19 MIPMB) was there insufficient tissue for diagnosis. CONCLUSIONS: Muscle biopsy proved highly effective as a diagnostic tool as 90% yielded adequate tissue samples. The results obtained with MIPMB performed by interventionist pathologists were comparable to those of open muscle biopsy.

Ganglioneuroma cervical. Presentación de un caso en edad pediátrica y revisión de la literatura

Resumen. E l g a n g l i o n e u r o m a c o n s t i t u y e u n t u m or neuroectodérmico primitivo benigno, que deriva delos ganglios del sistema simpático y está compuesto por células de Schwann maduras, células ganglionares y fibras nerviosas. Se presenta el caso de un raro tumor de cuello en una paciente de sexo femenino en edad pediátrica, con antecedentes de masa tumoral cervical desde hacía dos años. En los estudios por imagen realizados se diagnosticó una lesión sólida heterogénea con calcificaciones puntiformes, que comprimía estructuras óseas y vasculares adyacentes. Para obtener histología se realizó biopsia con aguja gruesa ecodirigida,informándose por anatomía patológica el diagnóstico de ganglioneuroma cervical. Debido a la baja incidencia del ganglioneuroma como variedad tumoral, y a su vez, la rara localización cervical enun escaso porciento de los pacientes, la presenteinvestigación se propone enriquecer la literatura científica nacional e internacional, aportando un nuevo caso que sirva de base para futuras investigaciones, respetando los principios éticos dela investigación en salud.[AU]

Usefulness of ultrasound-guided core biopsy in thyroid nodules with inconclusive fine-needle aspiration biopsy findings. / Utilidad de la biopsia con aguja gruesa ecoguiada en nódulos tiroideos con punción aspirativa con aguja fina no diagnóstica.

OBJECTIVES: To determine the diagnostic performance of ultrasound-guided core-needle biopsy in thyroid nodules after two inconclusive fine-needle aspiration biopsies. To assess the complications of core-needle biopsy. To analyze the reliability of diagnoses obtained with core-needle biopsy. To measure the economic impact of avoiding lobectomies in patients with benign core-needle biopsy findings. MATERIAL AND METHODS: This retrospective study reviewed 195 core-needle biopsies in 178 patients. To determine the reliability of the core-needle biopsy findings, we compared the diagnosis from the core-needle specimen versus the histologic findings in the surgical specimens when core-needle biopsy findings indicated malignancy or follicular proliferation and versus the stability of the nodule on ultrasound follow-up for one year when core-biopsy findings indicated benignity. RESULTS: Core-needle biopsy yielded a diagnosis for 179 (91.7%) nodules, of which 122 (62.5%) were classified as benign, 50 (25.6%) as follicular proliferation, and 7 (3.6%) as malignant. The findings were inconclusive for 16 (8.3%) nodules. Minor complications were observed in 4 (2%) patients; no major complications were observed. The sensitivity of core-needle biopsy for the diagnosis of thyroid cancer was low (42.8%) because the technique was unable to detect capsular or vascular invasion, although the specificity and positive predictive value (PPV) were 100%. However, when we considered histologic findings of malignancy and follicular proliferation positive because both require surgical resection, the sensitivity increased to 97.5% and the PPV decreased to 83.3%. There were 79 nodules with ultrasound follow-up for at least one year; 76 (96.2%) had negative core-needle biopsy findings, and 74 (97.3%) of these remained stable. The negative predictive value (NPV) for malignancy of the benign nodules was 98.6%, although no malignant transformation was observed. Nevertheless, the results of the statistical analysis do not allow us to recommend forgoing ultrasound follow-up in patients with benign core-biopsy findings. The cost savings of avoiding lobectomy in patients with benign nodules and stability of the nodule on ultrasound follow-up for at least one year was about 90%. CONCLUSIONS: Core-needle biopsy of thyroid nodules is effective because it diagnoses more than 90% of nodules with inconclusive findings after fine-needle aspiration biopsy. It is safe if done by experienced professionals. It is reliable because it yields 100% specificity and 100% PPV for malignant nodule, 97.5% sensitivity for the detection of nodules that require surgery, and 98.6% NPV for benign nodules. It is efficient because it reduces the costs of diagnosis compared to lobectomy in benign nodules.

Dissemination of health technologies: Trends in the use of diagnostic test in breast cancer screening.

OBJECTIVE: To analyse trends in the use of diagnostic test in breast cancer screening programs in Spain. MATERIALS AND METHODS: Retrospective study of 542,695 women who had undergone at least one screening mammogram in any of the screening centres of three administrative regions in Spain, between 1996 and 2011. Process measures were: overall recall rate, overall invasive test rate, and rates of each type of invasive test (fine-needle aspiration biopsy, core-needle biopsy and surgical biopsy). As results measures were included detection of benign lesions rate, ductal in situ cancer rate and invasive cancer rate. Adjusted by age rates were estimated year by year for each measure and, also, the annual percent of change and its corresponding joint points. RESULTS: Core-needle biopsy rates decreased between 1996 and 1999 and changed trends in 1999-2011 with an increase of 4.9% per year. Overall recall rate declined by 4.6% from 1999 to 2004, invasive test rate declined between 1996 and 2004 by 24.3%. Fine-needle aspiration biopsy rate changes were: a 22.4% declined per year (1996-1998), and 13.5% declined per year (1998-2005). Benign lesions rate decreased from 1996 to 2011, 21.4% per year (1996-2001) and 6.0% (2001-2011). Ductal carcinoma in situ and invasive cancer had no-statistically significant changes. CONCLUSION: The introduction of core-needle biopsy was slow and not concurrent with the reduction in the use of other diagnostic tests, but also represented a reduction in the rate of overall diagnostic tests and in the detection rate of benigns lesions without affecting the cancer detection rates.

Cost-effectiveness of hydrogel plugs in CT-guided lung biopsies. / Estudio de coste-efectividad sobre la utilización de un tapón de hidrogel en las biopsias pulmonares guiadas por tomografía computarizada.

OBJECTIVE: Using a hydrogel plug decreases the number of cases of pneumothorax and reduces the need for pleural drainage tubes in CT-guided lung biopsies. We aimed to analyze the cost-effectiveness of using hydrogel plugs. MATERIAL AND METHODS: We analyzed 171 lung biopsies divided into three groups: Group 1 (n=22): fine-needle aspiration cytology (FNAC) without hydrogel plugs; Group 2 (n=89): FNAC with hydrogel plugs; and Group 3 (n=60): FNAC plus core-needle biopsy (CNB) with hydrogel plugs. We calculated the total costs (direct and indirect) in the three groups. We analyzed the percentage of correct diagnoses, the average and incremental rations, and the most cost-effective option. RESULTS: Total costs: Group 1 = 1,261.28 + 52.65 = € 1,313.93; Group 2 = 1,201.36 + 67.25 = € 1,268.61; Group 3 = 1,220.22 + 47.20 = € 1,267.42. Percentage of correct diagnoses: Group 1 = 77.3%, Group 2 = 85.4%, and Group 3 = 95% (p = 0.04). Average cost-effectiveness ratio: Group 1 = 16.99; Group 2 = 14.85; and Group 3 = 13.34. CONCLUSIONS: Group 3 was the best option, with the lowest average cost-effectiveness ratio; therefore, the most cost-effective approach is to do FNAC and CNB using a dehydrated hydrogel plug at the end of the procedure.

Caracterización clínicoepidemiológica, demográfica e histológica de los enfermos de cáncer pancreático avanzado diagnosticados mediante biopsia por tru-cut / Epidemiological, demographic and histological characterization of advanced pancreatic cancer patients diagnosed by tru-cut biopsy

Introducción: el cáncer pancreático tiene el peor pronóstico entre los tumores malignos con solo 5 por ciento de supervivencia a los cinco años de diagnosticados los pacientes. Su diagnóstico, generalmente tardío, se hace cuando la enfermedad está avanzada o cuando hay metástasis.Objetivo: caracterizar los enfermos con diagnóstico histológico de cáncer de páncreas estadios III y IV, en los que se aplicó como técnica para toma de la muestra la biopsia por tru-cut.Método: se realizó un estudio descriptivo a 11 enfermos con cáncer pancreático estadios III y IV cuya confirmación histológica se logró mediante la biopsia por tru-cut en el Hospital General Provincial Docente de Ciego de Ávila en el período enero-diciembre de 2017. Las variables estudiadas fueron: edad, sexo, localización topográfica, factores de riesgo, histología, complicaciones y supervivencia.Resultados: predominaron el grupo de edades de 66-81 años (45,45 por ciento), el sexo masculino (63,64 por ciento), la localización en la cabeza (54,55 por ciento), y el tabaquismo (21,74 por ciento) como factor de riesgo. El adenocarcinoma bien diferenciado (36,36 por ciento) fue la neoplasia dominante. La supervivencia después de siete meses fue elevada (90,90 por ciento), y su rango mayor fue 10-12 meses. Las complicaciones fueron mínimas y no graves.Conclusiones: se caracterizó a los en enfermos diagnosticados de cáncer pancreático estadios III y IV según las variables a estudiar. En el curso de la investigación se mostró la sobrevida alcanzada en ellos dado a las posibilidades terapéuticas oncoespecíficas propiciadas por el estudio histológico, logrado mediante la biopsia por tru-cut(AU)

Introduction: pancreatic cancer has the worst prognosis among malignant tumors with only 5 percent survival after five years of diagnosed patients. The diagnosis, usually late, is carried out when the disease is advanced or when there is metastasis.Objective: to characterize the patients with histological diagnosis of stages III and IV pancreatic cancer, in which the tru-cut biopsy was applied as a technique for taking the sample.Method: a descriptive study was carried out on 11 patients with stages III and IV pancreatic cancer whose histological confirmation was achieved by means of the tru-cut biopsy in the General Provincial Teaching Hospital of Ciego de Ávila in the period January-December 2017. The variables studied were: age, sex, topographic location, risk factors, histology, complications and survival.Results: the age group of 66-81 years (45,45 percent), the male sex (63,64 percent), the location in the head (54,55 percent), and smoking (21,74 percent) as a risk factor prevailed. Survival after seven months was high (90,90 percent), and its highest range was 10-12 months. The complications were minimal and not serious. Conclusions: patients diagnosed with pancreatic cancer stages III and IV were characterized according to the variables to be studied. In the course of the investigation, the survival achieved in them was shown given the onco-specific therapeutic possibilities fostered by the histological study, achieved by means of a tru-cut biopsy(AU)

Usefulness of the twinkling artifact on Doppler ultrasound for the detection of breast microcalcifications. / Utilidad del artefacto Doppler de centelleo de color (twinkle) en la detección ecográfica de microcalcificaciones mamarias.

OBJECTIVE: To determine whether the twinkling artifact on Doppler ultrasound imaging corresponds to microcalcifications previously seen on mammograms and to evaluate the usefulness of this finding in the ultrasound management of suspicious microcalcifications. MATERIAL AND METHODS: We used ultrasonography to prospectively examine 46 consecutive patients with groups of microcalcifications suspicious for malignancy identified at mammography, searching for the presence of the twinkling artifact to identify the microcalcifications. Once we identified the microcalcifications, we obtained core-needle biopsy specimens with 11G needles and then used X-rays to check the specimens for the presence of microcalcifications. We analyzed the percentage of detection and obtainment of microcalcifications by core-needle biopsy with this technique and the radiopathologic correlation. Microcalcifications that were not detected by ultrasound or discordant lesions were biopsied by stereotaxy at another center. We also used ultrasound guidance for preoperative marking with clips, usually orienting them radially. RESULTS: We identified and biopsied 41 of the 46 lesions under ultrasound guidance, including 24 of 25 carcinomas (17 in situ). B-mode ultrasound was sufficient for biopsying the microcalcifications in 14 patients, although the presence of the twinkling artifact increased the number of microcalcifications detected and thus enabled more accurate preoperative marking. Thanks to the twinkling sign, we were able to identify 27 additional groups of microcalcifications (89% vs. 30%; p < 0.05). All the surgical specimens had margins free of disease. CONCLUSIONS: The twinkling artifact is useful for microcalcifications in ultrasound examinations, enabling a significant increase in the yield of ultrasound-guided biopsies and better preoperative marking of groups of microcalcifications.

Imágenes en mastopatia diabética / Mr imaging of diabetic mastopathy

Objective: To retrospectively analyze the clinical records and imaging data of patients with diabetic mastopathy according to pathological findings of samples obtained by histological puncture with ultrasound guidance. Methods: Between 2002 and 2007, six patients were diagnosed with diabetic mastopathy, and their medical records and MR images were assessed. All patients underwent both mammography and ultrasound examination. One of them was additionally submitted to MRI. Results: The patients' mean age was 36.6 years. Mammograms showed asymmetric tissue densifications without micro calcifications, while ultrasound examination evidenced ill-defined solid nodular or pseudonodular areas greater than 2 cm, with posterior sonic attenuation. Magnetic resonance imaging revealed a nodular area with poorly defined contours with enhancement similar to normal breast tissue. By performing eco-guided biopsy, it was possible to establish the differential histological diagnosis of breast carcinoma and to confirm diabetic mastopathy. Conclusion: Diabetic mastopathy presents mammographic and ultrasound imaging features indistinguishable from breast cancer. Since MRI does not reveal pathological stromal enhancement it can be helpful for a differential diagnosis. The echo-guided biopsy allows the diagnosis of this condition.

Objetivo: Analizar retrospectivamente las historias clínicas e imágenes de pacientes conmastopatía diabética, según hallazgos en anatomía patológica de muestras obtenidas por punción histológica con guía ecográfica. Material y Métodos: Entre los años 2002 y 2007, se diagnosticaron 6 pacientes con mastopatía diabética, evaluándose sus historias clínicas e imágenes. A todas las pacientes se le efectuó mamografía y ecografía; a una paciente se realizó además resonancia magnética. Resultados: La edad promedio de las pacientes fue de 36,6 años. Las mamografías mostraron densificaciones tisulares asimétricas sin microcalcificaciones; las ecografías evidenciaron áreas sólidas nodulares o seudonodulares mal definidas, mayores a 2 cm, con atenuación sónica posterior y la resonancia magnética: un área nodular de contornos mal delimitados con realce similar al tejido mamario normal. La punción biopsia ecoguiada pudo establecer el diagnóstico histológico diferencial con carcinoma mamario y confirmar mastopatía diabética. Conclusión: La mastopatía diabética presenta características imaginológicas en mamografía y ecografía que pueden ser similares al carcinoma. La resonancia magnética, al no presentar realce patológico estromal, puede colaborar en el diagnostico diferencial. La biopsia eco-guiada permite el diagnóstico de esta patología.