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The Korean Journal of Cytopathology 2005;16(1): 41-46.
Fine Needle Aspiration Cytology of a Thymic Carcinoid Tumor: A Case Report.
Young Ha Oh, Ki Seok Jang, Young Soo Song, Chul Burm Lee, Choong Ki Park, Moon Hyang Park, Yong Wook Park
1Department of Pathology, College of Medicine, Hanyang University, Seoul, Korea. parkyu@hanyang.ac.kr
2Department of Thoracic Surgery, College of Medicine, Hanyang University, Seoul, Korea.
3Department of Radiology, College of Medicine, Hanyang University, Seoul, Korea.
ABSTRACT
Carcinoid tumors of the thymus are vanishingly rare, and the characteristic cytologic findings of this condition have never before been reported in Korea. Recently, we encountered a 58-year-old woman who had been suffering from general weakness and weight loss for several months. Radiological imaging revealed a large anterior mediastinal mass. A fine needle aspiration biopsy (FNAB) of the mass showed predominantly scattered single cells, as well as some loose clusters of small cells with scanty cytoplasm. Some of these small cells exhibited plasmacytoid features, with moderately granular cytoplasm. We also discuss the cytological differential diagnosis between thymic carcinoid and other mediastinal tumors.
Key Words: Carcinoid tumor; Thymus; Fine needle aspiration cytology