毛发囊肿
Pilar Cyst
作者信息
Al Aboud Daifallah M., Yarrarapu Siva Naga S., Patel Bhupendra C.
机构信息
TAIF University
University of Texas Health Science Center
Pilar or Trichilemmal cysts are common dermal cysts. They occur in less than 10% of the population. Of all skin cysts, Pilar cysts are the most common cysts, mostly affect the skin of the scalp. Trichilemmal cysts never give rise to malignant lesions. They are usually sporadic. The cysts contain keratin and are outlined by stratified squamous epithelium similar to what we see in the outer(external) root sheath of the hair follicle. Proliferating trichilemmal cysts are the tumor form of pilar cysts, and it would appear in less than 3% of all cases of pilar cysts, and it might ulcerate and may be locally aggressive.
毛发囊肿或外毛根鞘囊肿是常见的真皮囊肿。它们在不到10%的人群中出现。在所有皮肤囊肿中，毛发囊肿是最常见的囊肿，主要影响头皮皮肤。外毛根鞘囊肿从不引发恶性病变。它们通常是散发性的。囊肿含有角蛋白，由类似于毛囊外（外部）根鞘的复层鳞状上皮构成轮廓。增殖性外毛根鞘囊肿是毛发囊肿的肿瘤形式，在所有毛发囊肿病例中出现的比例不到3%，可能会发生溃疡并具有局部侵袭性。
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