Bakhos R, Wojcik E M, Olson M C
Department of Pathology, Loyola University Medical Center, Maywood, Illinois 60153, USA.
Diagn Cytopathol. 1998 Sep;19(3):216-20. doi: 10.1002/(sici)1097-0339(199809)19:3<216::aid-dc13>3.0.co;2-h.
Inflammatory pseudotumor, fibrohistiocytic type, also called benign fibrous histiocytoma, is a rare reactive entity usually found incidentally on routine chest roentgenography. We present a case of inflammatory pseudotumor, fibrohistiocytic type, initially diagnosed by fine-needle aspiration (FNA) cytology in a 39-yr-old woman with a history of breast carcinoma. Cytomorphologic characteristics were confirmed by a cell block examination and immunohistochemical findings. The differential diagnoses of the fine-needle aspiration cytology of this type of inflammatory pseudotumor are discussed.