Requena Caballero L, Sánchez Yus E
Hospital Clinico San Carlos, Universidad Complutense, Madrid.
J Am Acad Dermatol. 1989 Nov;21(5 Pt 2):1073-5. doi: 10.1016/s0190-9622(89)70298-x.
This report describes the clinical and histopathologic characteristics of a pigmented follicular cyst. Clinically, it was a blue intracutaneous nodule that simulated a blue nevus. Nevertheless, the histopathologic examination showed in the mid dermis an epithelial cyst whose wall comprised a layer of stratified squamous epithelium with infundibular keratinization and whose lumen contained laminated keratin and many pigmented terminal hair shafts. The differential diagnosis with other epithelial cysts containing hair shafts in their cavities, mainly the eryptive vellus hair cyst, is discussed.
本报告描述了一个色素性毛囊囊肿的临床和组织病理学特征。临床上，它是一个蓝色的皮内结节，类似蓝痣。然而，组织病理学检查显示在真皮中部有一个上皮囊肿，其壁由一层有漏斗状角化的复层鳞状上皮组成，其腔内含有板层状角蛋白和许多色素沉着的终毛。文中讨论了与其他腔内含有毛干的上皮囊肿，主要是发疹性毳毛囊肿的鉴别诊断。
