Atypical sarcoidosis diagnosed using endobronchial ultrasound-guided mediastinal lymph node biopsy with fine biopsy forceps: Two case reports

Figure 2 Hematoxylin and eosin staining of endobronchial ultrasound-guided transbronchial forceps biopsy specimens, (magnification, × 40). A: Shows well-formed non-caseating granulomas with multinucleated giant cells, surrounded by lymphocytic infiltrates. Special stains (acid-fast bacilli, periodic acid-schiff, and Gomori methenamine silver) were negative for infection; B and C from a subcarinal lymph node exhibits compact non-caseating granulomas without necrosis, consistent with sarcoidosis; B: Multinucleated giant cells and surrounding lymphocytes are visible; C: Under hematoxylin and eosin staining, dense non - caseating granulomas in dark purple can be observed. The proportion is 25 µm.