Fine needle aspiration findings in generalized post-Calmette-Guérin bacillus lymphadenitis presenting as an abdominal mass.

Generalized lymphadenopathy with an abdominal mass following a Calmette-Guérin bacillus vaccination is a rare complication and often confused clinically with malignant neoplasms, such as lymphoma and leukemia. Smears from lymph nodes and abdominal masses reveal numerous macrophages with streaked or wrinkled cytoplasm. These cells closely resemble Gaucher cells. The streaked appearance of the cytoplasm is due to the presence of numerous acid-fast bacilli in the cytoplasm.