title: Malignant Clear Cell Acanthoma: Report of a Rare Case of Clear Cell Acanthoma-Like Tumor With Malignant Features.
abstract: An erythematous and moist tumor nodule on the left temple of a 92-year-old woman was biopsied and identified as a clear cell acanthoma (CCA)-like tumor with malignant cytology and high proliferation activity. This case is similar to 2 cases reported previously as atypical CCA. The authors believe that these tumors are malignant counterparts of CCA and propose to call them malignant CCA. The clinicopathologic features of the present case are described along with dermoscopic findings.
authors.affiliation: Departments of *Dermatology, and †Pathology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Tao-Yuan, Taiwan.
authors.forename: Chien-Yio
authors.initials: CY
authors.lastname: Lin
authors.forename: Li-Yu
authors.initials: LY
authors.lastname: Lee
authors.forename: Tseng-Tong
authors.initials: TT
authors.lastname: Kuo
mesh_terms: D049309:Acanthoma / Q000737:chemistry / Q000473:pathology* / Q000601:surgery; D000369:Aged, 80 and over; D014408:Biomarkers, Tumor / Q000032:analysis; D001706:Biopsy; D049109:Cell Proliferation; D003452:Cryosurgery; D046169:Dermoscopy; D005260:Female; D005546:Forehead; D006258:Head and Neck Neoplasms / Q000737:chemistry / Q000473:pathology* / Q000601:surgery; D006801:Humans; D007150:Immunohistochemistry; D012878:Skin Neoplasms / Q000737:chemistry / Q000473:pathology* / Q000601:surgery; D016896:Treatment Outcome
chemical_list: D014408:Biomarkers, Tumor