Peripilar keratin casts: a study with the scanning electron microscope.
Two cases of Peripilar keratin casts are presented and the results of a Scanning EM investigation are discussed. The surface of the casts is very irregular and disordered. In the underlying structure of the casts the characteristic image of a "sponge" is observed. The cuticle of the hair beneath is slightly flaky, showing fissures. The hair surface facing the peripilar casts is normal.
D002675:Child, Preschool; D005260:Female; D006197:Hair / Q000648:ultrastructure; D006801:Humans; D007642:Keratosis / Q000473:pathology*; D008855:Microscopy, Electron, Scanning; D010241:Parakeratosis / Q000473:pathology*