title: Congenital Giant Keratinous Cyst Mimicking Lipoma: Case Report and Review.
abstract: Epidermal cysts represent the most common cutaneous cysts. They arise following a localized inflammation of the hair follicle and occasionally after the implantation of the epithelium, following a trauma or surgery. Conventional epidermal cysts are about 5 cm in diameter; however, rare reports of cysts more than 5 cm are reported in the literature and are referred as "Giant epidermal cysts." Epidermal cysts although common, can mimic other common benign lesions in the head and neck area. A thorough clinico-pathologic investigation is needed to diagnose these cutaneous lesions as they differ in their biologic behavior, treatment, and prognosis. We report a case of a giant epidermoid cyst in the scalp area of a young female patient which mimicked lipoma on clinical, as well as cyotological examination. We also present a brief review of epidermal cysts, their histopathological differential diagnosis, and their malignant transformation.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Dr. D.Y. Patil Dental College and Hospital, DPU, Pimpri, Pune, Maharashtra, India.
authors.forename: Samrat
authors.initials: S
authors.lastname: Sabhlok
authors.affiliation: Department of Oral Pathology and Microbiology, Dr. D.Y. Patil Dental College and Hospital, DPU, Pimpri, Pune, Maharashtra, India.
authors.forename: Ketki
authors.initials: K
authors.lastname: Kalele
authors.affiliation: Department of Oral and Maxillofacial Surgery, Dr. D.Y. Patil Dental College and Hospital, DPU, Pimpri, Pune, Maharashtra, India.
authors.forename: Asmita
authors.initials: A
authors.lastname: Phirange
authors.affiliation: Department of Oral Pathology and Microbiology, Dr. D.Y. Patil Dental College and Hospital, DPU, Pimpri, Pune, Maharashtra, India.
authors.forename: Supriya
authors.initials: S
authors.lastname: Kheur
keywords: Giant epidermal cyst; histopathology; keratinous cyst; scalp