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明显的皮脂腺细胞和基底样细胞,皮脂腺细胞如果占主要,皮脂腺腺瘤,否则皮脂腺瘤或者皮脂腺上皮瘤。
毛囊瘤的特点:Many small hair follicles emptying into a central large follicular infundibulum (Momma and her babies)
• Each small hair follicle has a bulb and root sheath, and produces a hair fiber; Central infundibulum contains many small hair
shafts; Clinically, there is a tuft of hairs protruding from a central pore