Transthoracic fine-needle aspiration cytology, combined with cell block examination and immunohistochemistry, can be used to diagnose inflammatory pseudotumor, fibrohistiocytic type.
Supports FNA cytology with cell block for this rare entity; leaves open broader validation before clinical adoption.
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.
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Bakhos et al. (1998) studied this question.
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