title: Inverted verrucous carcinoma of the buttock mimicking abscess and gossypiboma: MR and pathologic correlation.
abstract: Verrucous carcinoma (VC) is an uncommon, low-grade variant of squamous cell carcinoma. Its benign histologic appearance and indolent course may lead to a delayed diagnosis. We report a rare case of an inverted verrucous carcinoma of the buttock presenting as a slow-growing subcutaneous lesion with a draining sinus and no exophytic component, clinically mimicking abscess and gossypiboma, with magnetic resonance imaging (MRI) and pathologic correlation. Biopsy of the lesional base is mandatory for accurate diagnosis. An enhancement pattern with a convoluted undulating appearance in a subcutaneous lesion displayed on MRI should raise a consideration of inverted VC in the differential diagnosis.
authors.affiliation: Department of Radiology, Einstein Medical Center Philadelphia, 5501 Old York Road, Philadelphia, PA, 19141, USA.
authors.forename: Bing
authors.initials: B
authors.lastname: Hu
authors.forename: Tetyana
authors.initials: T
authors.lastname: Gorbachova
authors.forename: Paul
authors.initials: P
authors.lastname: Belser
authors.forename: Shuchi K
authors.initials: SK
authors.lastname: Rodgers
authors.forename: Robert
authors.initials: R
authors.lastname: Schiowitz
mesh_terms: D000038:Abscess / Q000473:pathology*; D002081:Buttocks / Q000473:pathology*; D018289:Carcinoma, Verrucous / Q000473:pathology*; D003937:Diagnosis, Differential; D005547:Foreign Bodies / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D012983:Soft Tissue Neoplasms / Q000473:pathology*; D013223:Statistics as Topic