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  • Title: [Malignant proliferating trichilemmal cyst of the scalp: A case report].
    Author: ElBenaye J, Elkhachine Y, Sakkah A, Sinaa M, Moumine M, Jakar A, Elhaouri M.
    Journal: Ann Chir Plast Esthet; 2018 Feb; 63(1):97-101. PubMed ID: 28755831.
    Abstract:
    BACKGROUND: Proliferating trichilemmal cyst (PTC) is a rare adnexal tumor, generally benign, primarily sitting on the scalp of elderly women. About fifty cases are reported in the literature. Herein, we describe another one particularly aggressive. OBSERVATION: A 70-year-old woman had been showing an increase in the size of an occipital cyst for 6years. A cephalic scan and wide surgical excision had confirmed the diagnosis of a malignant PTC. Four months later, the tumor recurred with regional metastases and intracerebral invasion. DISCUSSION: Through our case and based on the literature analyzing, we discuss the nosology of PTC and its clinical and histological distinctive elements. CONCLUSION: Large studies are needed to better understand the specificities of PTC, specially malignant form, but it remains difficult because of its rarity.
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