毛囊和穿通性疾病。

J Cutan Pathol. 1985 Jun-Aug;12(3-4):282-8. doi: 10.1111/j.1600-0560.1985.tb01631.x.

Pathologic changes associated with hair follicles include infundibular hyperkeratosis, inflammation, mucinous degeneration and transepidermal elimination of foreign material. Because of the focal nature of the pathologic changes multiple sections are often useful in establishing the correct diagnosis.

与毛囊相关的病理变化包括漏斗部角化过度、炎症、黏液变性以及异物经表皮排出。由于病理变化具有局灶性，因此多个切片对于确立正确诊断往往很有用。