title: Giant solitary sebaceous gland hyperplasia clinically simulating epidermoid cyst.
abstract: We report an unusual case of sebaceous gland hyperplasia manifested clinically as a large solitary intracutaneous nodule, which was at first diagnosed as an epidermoid cyst. Histologically, the nodule consisted of a single large central cavity connected with numerous fully-matured sebaceous glands. We discuss the unique clinical appearance and its histopathological differential diagnosis including sebaceous adenoma, sebaceous trichofolliculoma, organoid nevus and sebaceous gland hyperplasia.
authors.affiliation: Department of Dermatology, Tohoku University School of Medicine, Sendai, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Kudoh
authors.forename: M
authors.initials: M
authors.lastname: Hosokawa
authors.forename: T
authors.initials: T
authors.lastname: Miyazawa
authors.forename: H
authors.initials: H
authors.lastname: Tagami
mesh_terms: D003937:Diagnosis, Differential; D004814:Epidermal Cyst / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D006965:Hyperplasia / Q000175:diagnosis / Q000473:pathology; D008297:Male; D008875:Middle Aged; D012627:Sebaceous Glands / Q000473:pathology*; D012871:Skin Diseases / Q000175:diagnosis / Q000473:pathology