A Case of Nodular Fasciitis Showing Keloid-like Histological Features / 대한피부과학회지

Nodular fasciitis is a reactive myofibroblastic proliferative lesion and is frequently misdiagnosed as a sarcoma. Histopathologically, nodular fasciitis can be grouped into three subtypes based on their relation with the fascia: subcutaneous, fascial, intramuscular. The subcutaneous type is the most common type. Its histological appearance is quite variable, with lesions ranging from highly cellular "pseudosarcomatous" to myxoid proliferations, to hyalinized tumefactions with keloid-like strands of collagen. Herein we report a case of subcutaneous nodular fasciitis showing keloid-like, hylainized, and thickened collagenous change.