Calcifying Fibrous Pseudotumor
CFP; CFPT; CFT; CTP
Calcifying fibrous pseudotumor (CFP) is an extremely rare benign fibrous lesion that was originally described by Rosenthal and Abdul-Karim as “childhood fibrous tumor with psammoma bodies” in 1988, and the term itself was introduced by Fetsch and associates with an analysis of 10 cases in 1993. In the new classification system by the World Health Organization in 1999, CFP was classified as a soft tissue tumor. CFP has its unique histopathologic features characterized by a dense hyalinized collagenous tissue interspersed with benign spindle cells, chronic inflammatory cells infiltrate, and psammomatous and/or dystrophic calcifications. CFP most commonly arises in the extremities, followed by the trunk, inguinal and scrotal regions, and the head and neck. Rare cases have been reported in the mediastinum, pleura, and visceral peritoneum. In the newly published Classification of Tumors of the Lung, Pleura, Thymus, and Heartby the World Health...