Chondroma of the cheek: A case report.
An extremely rare case of soft tissue chondroma occurring in the right cheek of a 47-year-old woman is reported. The localized nodular tumor was encapsulated and composed of hyalinized cartilage with fine calcifications. Most tumor cells were positive for vimentin and S-100 protein, but negative for cytokeratin, factor VIII, and smooth muscle actin. It seems likely that the tumor cells arise from uncommitted mesenchymal stem cells by metaplastic process.
Onodera
K
K
Division of Oral Pathology, Department of Oral Medicine and Surgery, Tohoku University Graduate School of Dentistry, Sendai, Japan. onodera@opath.dent.tohoku.ac.jp
Xu
H
H
Kimizuka
S
S
Echigo
S
S
Ooya
K
K
D002610:Cheek / Q000473:pathology*; D002812:Chondroma / Q000473:pathology*; D005260:Female; D006801:Humans; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000473:pathology*