RT Journal Article SR Electronic T1 Histiocytosis X in a 27-y ear-old woman JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 197 OP 200 VO 50 IS 2 A1 Pelachyk, John M. A1 Bergfeld, Wilma F. A1 Tomecki, Kenneth J. A1 McMahon, James T. A1 Tubbs, Raymond YR 1983 UL http://www.ccjm.org/content/50/2/197.abstract AB Erythematous, scaling plaques, which were unresponsive to topical steroids, developed on the scalp and perineum in a 27-year-old woman. Light and electron microscopy and immunohistochemistry confirmed the clinical diagnosis of histiocytosis X.