title: Retinal arteriolar obstruction with progestogen treatment of threatened abortion.
abstract: OBJECTIVE
  To describe a case of a retinal arteriolar occlusion associated with progestogen treatment of threatened abortion.
  
  
  METHODS
  Case report.
  
  
  RESULTS
  A 30-year-old woman who had received a 2-week course of high dose intramuscular progestogen for a threatened abortion presented with a paracentral scotoma in her right eye and occlusion of a small arteriole adjacent to the macula. There were no major subsequent variations in haemostasis and pre-existing systemic diseases were excluded.
  
  
  CONCLUSIONS
  Retinal arteriolar occlusion may be associated with high dose progestogen-only therapy in pregnant women.
authors.affiliation: Department of Opthalmology, University of Udine, Udine, Italy. paolo.lanzetta@dsc.uniud.it
authors.forename: Paolo
authors.initials: P
authors.lastname: Lanzetta
authors.forename: Sabrina
authors.initials: S
authors.lastname: Crovato
authors.forename: Angelo
authors.initials: A
authors.lastname: Pirracchio
authors.forename: Francesco
authors.initials: F
authors.lastname: Bandello
mesh_terms: D000033:Abortion, Threatened / Q000188:drug therapy*; D000328:Adult; D001160:Arterioles; D005260:Female; D006801:Humans; D006908:Hydroxyprogesterones / Q000009:adverse effects*; D007273:Injections, Intramuscular; D011247:Pregnancy; D015356:Retinal Artery Occlusion / Q000139:chemically induced* / Q000175:diagnosis; D012607:Scotoma / Q000139:chemically induced
chemical_list: D006908:Hydroxyprogesterones; C037985:17-hydroxyprogesterone heptanoate