Cytomorphology of a mediastinal parathyroid cyst. Report of a case mimicking malignancy.
The clinical and cytologic features of a mediastinal parathyroid cyst are presented. Cytologic examination of the cyst fluid revealed the presence of small clusters of epithelial cells, with periodic-acid-Schiff-positive cytoplasmic granules. Special attention is required when atypical proliferating fibroblasts, which may be mistaken for malignant cells, are present.
D000328:Adult; D003560:Cysts / Q000473:pathology*; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D006801:Humans; D008297:Male; D010279:Parathyroid Diseases / Q000473:pathology*