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Rev Med Inst Mex Seguro Soc ; 56(1): 12-17, 2018.
Article in Spanish | MEDLINE | ID: mdl-29368890

ABSTRACT

BACKGROUND: The prevalence of pleural effusion in Mexico is over 400 per 100 000 inhabitants. The etiology is infectious in 45.7% and neoplastic in 32.6%. Closed pleural biopsy sensibility is 48-70% in cancer and 50-59% in tuberculosis using Cope or Abrams needle. In 1989, Tru-cut needle biopsy was described in a small study for massive pleural effusions with a sensibility of 86%. Our Institute has a wide experience with this infrequently procedure with reliable results than using Cope needle. Diagnostic yield should be evaluated. We aimed to evaluate the diagnostic yield of Tru-cut vs. standard Cope biopsy in the histopathological diagnosis of pleural effusion. METHODS: Experimental, not blinded, analytical, cross-sectional study. We studied 44 patients (24 male and 20 female) with exudative pleural effusion over a period of 14 months. Every patient underwent four Tru-cut and four Cope needle biopsies. The diagnostic yield of both methods was compared. RESULTS: The mean age of patients was 61.4 ± 12.2 years. The diagnosis was achieved in 25 (57%) of patients using Tru-cut and 22 (50%) of patients using Cope's closed pleural biopsy. The diagnostic value was not significantly higher (p = 0.41). The most common diagnoses were adenocarcinoma (20.5%), mesothelioma (15.9%) and tuberculosis (15.9%). CONCLUSIONS: The diagnostic yield of Tru-cut needle biopsy is slightly higher than Cope pleural biopsy, very similar to that reported previously. The experience in this procedure is an advantage in our clinical practice.


Introducción: la prevalencia del derrame pleural en México es superior a 400 por 100 000 habitantes. Entre los exudados encontramos etiología infecciosa en 45.7% y neoplásica en 32.6%. La biopsia pleural tiene una sensibilidad de 48-70% en cáncer y 50-90% en tuberculosis si se utiliza aguja de Cope o Abrams. En 1989, se describió la biopsia con aguja cortante (Tru-cut) en un estudio con una sensibilidad de 86%. En nuestro hospital contamos con amplia experiencia en este procedimiento poco practicado actualmente. El objetivo fue comparar la rentabilidad diagnóstica y la seguridad de las biopsias pleurales con aguja de Tru-cut contra aguja de Cope en pacientes con patología pleural. Métodos: estudio experimental, no ciego, analítico, transversal. Se incluyeron 44 pacientes con exudado pleural. A cada paciente se le realizaron cuatro biopsias pleurales con aguja de Tru-cut y cuatro con aguja de Cope para comparar la rentabilidad diagnóstica con ambos procedimientos. Resultados: la media de edad de los pacientes fue de 61.4 ± 12.2 años. La rentabilidad diagnóstica con la aguja de Tru-cut fue de 57% y con Cope de 50% (p = 0.411). El valor diagnóstico no fue significativamente alto (p = 0.41). Los diagnósticos más comunes fueron: adenocarcinoma (20.5%), mesotelioma (15.9%) y tuberculosis (15.9%). Conclusiones: la rentabilidad diagnóstica de las biopsias pleurales cerradas con aguja de Tru-cut es ligeramente mayor a la obtenida con aguja de Cope. Se trata de una fortaleza en nuestra práctica clínica.


Subject(s)
Biopsy, Needle/methods , Lung Diseases/diagnosis , Pleural Effusion/etiology , Adult , Aged , Aged, 80 and over , Biopsy, Needle/instrumentation , Cross-Sectional Studies , Female , Humans , Lung Diseases/complications , Lung Diseases/pathology , Male , Middle Aged , Pleural Effusion/pathology , Sensitivity and Specificity
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