Airway Biopsy Results From Patients With Suspected Granulomatosis With Polyangiitis (2005-2015): Clinicopathological Correlation and Proposal of an Algorithm to Improve Diagnosis.

Objectives: The aim of this study was to review the histologic diagnostic yield of airway biopsies with a suspected granulomatosis with polyangiitis (GPA) diagnosis at a single center devoted to respiratory diseases using previously published criteria. A secondary aim was to apply the algorithm proposed by the European Medicines Agency to determine whether more biopsies were confidently identified as having GPA diagnoses.

Methods: From a total of 132 airway biopsies (2005-2015), 50 were randomly selected for second review by an expert pathologist, and previously published criteria were applied.

Diagnostic discrepancy between bronchoalveolar lavage and transbronchial biopsy from bronchoscopies of HIV patients with pneumonia: toward an integral diagnosis.

Background: The key diagnostic method for the evaluation of lung diseases associated with HIV infection is bronchoscopy, with bronchoalveolar lavage (BAL) being the most commonly used sampling technique. Transbronchial biopsy (TBB) is often complementary.

Setting: This is a retrospective cross-sectional study to determine the diagnostic usefulness of bronchoscopy with simultaneous samples obtained through BAL and TBB in HIV-infected patients with pneumonia at the National Institute of Respiratory Diseases Ismael Cosío Villegas.

Biomarkers for Predicting Malignant Pleural Mesothelioma in a Mexican Population.

Diagnosis of malignant pleural mesothelioma (MPM) remains a challenge, especially when resources in pathology are limited. The study aimed to evaluate cost-effective tumor markers to predict the probability of MPM in plasma samples in order to accelerate the diagnostic workup of the tissue of potential cases. We conducted a case-control study stratified by gender, which included 75 incident cases with MPM from three Mexican hospitals and 240 controls frequency-matched by age and year of blood drawing.