We report the cytological features of bile containing shape-changed bacilli. A 52-year-old man with acute cholecystitis was treated using intravenous β-lactum antibiotics. Bile contained a few epithelial cells and numerous shape-changed filament and mixed bacilli positive for periodicacid schiff (PAS) reaction, making it necessary to distinguish them from fungal hyphae. The morphology of shape-changed bacilli and their possible presence in bile is important in precisely diagnosing bile duct infection.
We report a case of Langerhans cell histiocytosis of the occipital bone in a 6-year-old boy. Imprint smears of the lesion showed scattered Langerhans cells with convoluted nuclei and pseudopodia-like cytoplasmic projections against a background of eosinophils, neutrophils, lymphocytes, and multinucleated histiocytic giant cells. We diagnosed the lesion cytologically as Langerhans cell histiocytosis, confirmed by histological findings. Pseudopodia-like cytoplasmic projections are considered an additional typical cytological finding for Langerhans cells in imprint smears.