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abstractpubmed· Abstract 2018· item PMID:30121565
Malignant proliferating trichilemmal tumour. Proliferating trichilemmal tumours are benign but locally aggressive skin neoplasms arising from hair follicles. Rarely, they can become malignant and must be appropriately managed to prevent recurrence and metastasis. One must have a low threshold for diagnosing this rare neoplasm.