title: A rare variant of pilomatricoma: pseudobullous pilomatricoma.
abstract: Pilomatricoma (PM; calcifying epithelioma of Malherbe) is a benign tumor originating from the matrix of the hair follicles. Clinical types of the tumor are familial, perforating, multinodular, exophytic, anetodermic, and giant PM. The bullous type is seen only in 3 to 6% of cases. Because the bullous areas detected in PM are filled with lymphatic liquid, some authors use the term pseudobulla. This report presents a 26-year-old female patient that was diagnosed with pseudobullous PM based on clinical, radiologic, and histopathological findings, and the pathogenesis of the bullous appearance of PM is reviewed from the literature.
authors.affiliation: Department of Dermatology, Eskişehir Osmangazi University, Eskişehir, Turkey. Corresponding author: hilalkayaerdogan@yahoo.com.
authors.forename: Hilal Kaya
authors.initials: HK
authors.lastname: Erdoğan
authors.affiliation: Department of Pathology, Ahi Evran University, Kırşehir, Turkey.
authors.forename: Zeliha
authors.initials: Z
authors.lastname: Kaya
authors.affiliation: Department of Plastic Reconstructive and Aesthetic Surgery, Ahi Evran University, Kırşehir, Turkey.
authors.forename: Çiğdem Derya
authors.initials: ÇD
authors.lastname: Aytop
authors.affiliation: Department of Dermatology, Ahi Evran University, Kırşehir, Turkey.
authors.forename: Ersoy
authors.initials: E
authors.lastname: Acer
mesh_terms: D000328:Adult; D005260:Female; D006201:Hair Diseases / Q000473:pathology; D006801:Humans; D018296:Pilomatrixoma / Q000473:pathology; D012878:Skin Neoplasms / Q000473:pathology