title: A case of intramuscular hemangioma presenting with large-angle hypertropia.
abstract: OBJECTIVE
  To report the case of a patient with large-angle hypertropia of an intramuscular hemangioma of the right superior rectus muscle (SR).
  
  
  METHODS
  A 63-year-old man with progressive vertical deviation of the right eye for the past 6 months visited our strabismus department; his condition was not painful. An examination indicated that he had 60PD of right hypertropia at distance and near in primary gaze. Additionally, a significant limitation of his downgaze was noted. The right eye appeared mildly proptotic, and the upper and lower eyelids were slightly edematous. Corrected vision was 20/20 in both eyes.
  
  
  RESULTS
  Orbital magnetic resonance imaging (MRI) studies revealed fusiform enlargement of the right superior rectus muscle, with prominent but irregular enhancement following gadolinium administration. Incisional biopsy revealed an intramuscular hemangioma in the superior rectus muscle with cavernous-type vessels.
  
  
  CONCLUSIONS
  This case demonstrates that intramuscular hemangioma should be considered in the differential diagnosis of isolated extraocular muscle enlargement and unusual strabismus.
authors.affiliation: Department of Ophthalmology, Korea University College of Medicine, Ansan Hospital, Gyeonggi-do, Korea.
authors.forename: Seung-Hyun
authors.initials: SH
authors.lastname: Kim
authors.forename: Hyung-Ho
authors.initials: HH
authors.lastname: Shin
authors.forename: Bo-Kun
authors.initials: BK
authors.lastname: Rho
authors.forename: Eung-Suk
authors.initials: ES
authors.lastname: Lee
authors.forename: Se-Hyun
authors.initials: SH
authors.lastname: Baek
mesh_terms: D001706:Biopsy; D003937:Diagnosis, Differential; D018450:Disease Progression; D005134:Eye Neoplasms / Q000150:complications* / Q000175:diagnosis; D006391:Hemangioma / Q000150:complications* / Q000175:diagnosis; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D019042:Muscle Neoplasms / Q000150:complications* / Q000175:diagnosis; D009801:Oculomotor Muscles; D013285:Strabismus / Q000175:diagnosis / Q000209:etiology*