title: Recurrent proliferating trichilemmal tumor of the vulva:  a case report.
abstract: Proliferating trichilemmal tumor (PTT) is a rare but morphologically distinct tumor that usually arises on the scalp of elderly women. It is composed of multiple cysts consisting of squamous epithelium with trichilemmal keratinization without granular layer interposition. Vulvar proliferating trichilemmal cyst is very rare, with, to the best of our knowledge, only 3 cases previously reported in the literature. We describe a 39-year-old woman with recurrent PTT on the left labium majus of the vulva, which had been excised from the same side 5 years before. She had a palpable nodule, approximately 2 cm in size, which was firm, mobile, and nontender; without erythema and ulceration; and covered by normal skin on the vulva. There was no inguinal lymphadenopathy. The lesion was removed by wide surgical excision; because of the tissue elasticity, primary closure was possible. The pathology result was reported as proliferating trichilemmal carcinoma with tumor-free margins. Although local recurrence after wide excision is rare, we recommend complete excision for treatment of PTT and long-term follow-up because of the possibility of recurrence.
authors.affiliation: Zekai Tahir Burak Women's Health Education and Research Hospital, Ankara, Turkey. ozlem.moraloglu@hotmail.com
authors.forename: Özlem
authors.initials: Ö
authors.lastname: Moraloğlu
authors.forename: Tayfun
authors.initials: T
authors.lastname: Güngör
authors.forename: Sebnem
authors.initials: S
authors.lastname: Ozyer
authors.forename: Özlem Gün
authors.initials: ÖG
authors.lastname: Eryilmaz
authors.forename: Tülin
authors.initials: T
authors.lastname: Özdener
authors.forename: Cihan
authors.initials: C
authors.lastname: Toğrul
authors.forename: Hatice
authors.initials: H
authors.lastname: Bayramoğlu
mesh_terms: D000328:Adult; D018450:Disease Progression; D004814:Epidermal Cyst; D005260:Female; D005497:Follicular Cyst / Q000175:diagnosis* / Q000473:pathology* / Q000601:surgery; D006201:Hair Diseases / Q000175:diagnosis* / Q000473:pathology* / Q000601:surgery; D006651:Histocytochemistry; D006801:Humans; D008853:Microscopy; D012008:Recurrence; D014844:Vulva / Q000473:pathology; D014846:Vulvar Neoplasms / Q000175:diagnosis* / Q000473:pathology* / Q000601:surgery