Bovenmyer D A
Arch Dermatol. 1979 Mar;115(3):338-9.
Umbilicated and nonumbilicated papules were present on the presternal area of a patient with eruptive vellus hair cysts. Histopathological examination of umbilicated papules showed penetration of vellus hairs through cyst walls, surrounding granulomatous foreign body reaction, and communication to the surface of the skin with released vellus hairs present in the pore. This suggests that resolution of some of the cysts in this disorder may occur by transepithelial elimination.
发疹性毳毛囊肿患者的胸骨前区出现了脐凹性和非脐凹性丘疹。对脐凹性丘疹进行组织病理学检查显示，毳毛穿过囊肿壁，周围有肉芽肿性异物反应，且与皮肤表面相通，毛孔中有释放出的毳毛。这表明该疾病中一些囊肿的消退可能通过经上皮清除发生。
