title: Histiocytosis X and pregnancy.
abstract: BACKGROUND
  Histiocytosis X, a clinically heterogeneous infiltrating disorder, is rarely associated with pregnancy. Diabetes insipidus is a common manifestation of histiocytosis X.
  
  
  METHODS
  A 27-year-old pregnant woman was diagnosed with histiocytosis X by biopsy. At 31 weeks' gestation, she developed diabetes insipidus and required treatment with intranasal 8-D-arginine vasopressin. A hypothalamic mass was noted on magnetic resonance imaging. She delivered a 363-g male at term by cesarean. Two months postpartum, after a motor vehicle accident, she developed a T6 sensory and motor deficit. An intramedullary spinal cord mass was diagnosed and surgically removed. She was treated postoperatively with radiation therapy to the spine and hypothalamus. Despite systemic chemotherapy, the disease progressed, and the patient died 18 months after delivery.
  
  
  CONCLUSIONS
  Pregnancy in patients suffering from histiocytosis X is rare. When pregnancy and histiocytosis X do coincide, diabetes insipidus may appear or worsen. Treatment with intranasal 8-D-arginine vasopressin does not pose risks for the fetus or for premature labor.
authors.affiliation: Department of Medicine, State University of New York at Buffalo, USA.
authors.forename: L A
authors.initials: LA
authors.lastname: DiMaggio
authors.forename: H A
authors.initials: HA
authors.lastname: Lippes
authors.forename: R V
authors.initials: RV
authors.lastname: Lee
mesh_terms: D000063:Accidents, Traffic; D000328:Adult; D001127:Arginine Vasopressin / Q000627:therapeutic use; D002585:Cesarean Section; D003919:Diabetes Insipidus / Q000150:complications / Q000188:drug therapy / Q000209:etiology; D017809:Fatal Outcome; D005260:Female; D006646:Histiocytosis, Langerhans-Cell / Q000150:complications / Q000175:diagnosis* / Q000209:etiology / Q000532:radiotherapy; D006801:Humans; D007031:Hypothalamus / Q000528:radiation effects; D007231:Infant, Newborn; D008279:Magnetic Resonance Imaging; D008297:Male; D011247:Pregnancy; D011248:Pregnancy Complications / Q000175:diagnosis / Q000628:therapy; D013116:Spinal Cord / Q000528:radiation effects; D013118:Spinal Cord Diseases / Q000175:diagnosis* / Q000209:etiology / Q000532:radiotherapy
chemical_list: D001127:Arginine Vasopressin