Pilar cyst = كيسة الشعر

Pilar cyst = كيسة الشعر   Trichilemmal Cyst (Pilar   Cyst)   Trichilemmal cysts are keratin-filled, epithelial-lined cysts usually on the scalp that arise from the outer root sheath of the hair follicle. EPIDEMIOLOGY Trichilemmal cysts can be found in 5 percent to 10 percent of the population, most commonly in middle-aged women. ETIOLOGY AND […]

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Pilomatricoma =ورم ام الشعرة

Pilomatrixoma   PILOMATRICOMA   Epidemiology. Pilomatricoma most commonly occurs in children and young persons.Some tumors arise in older adults. Mutation of the β-catenin gene, a mediator in the Wnt signal transduction pathway, is common in pilomatricomas.     Etiology. Pilomatricoma (calcifying epithelioma of Malherbe) is a relatively common appendage tumor that predominantly shows differentiation toward […]

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