An 87-year-old Japanese man, who had suffered from pneumoconiosis because he worked for over 25 years as a coal miner, visited the hospital with the chief complaint of dullness of chest and back. Chest X-ray revealed bilateral abnormal multiple nodules and calcification of hilar nodes. The fine needle aspiration biopsy cytology from the right supraclavicular lymph node revealed black fine carbon granules. silic acid salts and carbon-laden macrophages. These findings showed silicoanthracosis of the lymph node. We must be aware that cervical lymph node swelling can indicate not only carcinoma metastasis and tuberculosis but also nodal involvement of pneumoconiosis.
We report a case of a 73-year-old man with inflammatory pseudotumor of the left renal pelvis. The tumor was histologically composed of spindle-shaped cells with mild atypia and some multinucleated giant cells, lymphocytes and plasma cells. Cytological features revealed spindle-shaped fibroblast-like cells with enlarged oval nuclei with slight atypia. These cells had thin nuclear membranes and a fine chromatin structure. Imprint smears also contained lymphocytes and foreign-body type multinucleated giant cells. Immunostaining was positive for α-SMA and vimentin. These features were thought to be compatible with those reported for inflammatory pseudotumor. Its cytological differential diagnosis was briefly discussed as well.