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 John M. Pelachyk A1 Wilma F. Bergfeld A1 Kenneth J. Tomecki A1 James T. McMahon A1 Raymond Tubbs 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.