Unilateral Ptosis Due to Isolated Levator Myositis.

Yoon, Je Hwan; Moon, Hyun Seung; Chi, Mijung

doi:2012.53.5.707

J Korean Ophthalmol Soc > Volume 53(5); 2012 > Article

Case Report

Journal of the Korean Ophthalmological Society 2012;53(5):707-711.
DOI: https://doi.org/10.3341/jkos.2012.53.5.707 Published online May 15, 2012.

Unilateral Ptosis Due to Isolated Levator Myositis.

Je Hwan Yoon, Hyun Seung Moon, Mijung Chi

¹Department of Ophthalmology, Gachon University Gil Hospital, Incheon, Korea. cmj@gilhospital.com
²Bright World Eye Center, Seoul, Korea.

눈꺼풀처짐을 동반한 위눈꺼풀올림근에 국한된 외안근염 1예

윤제환¹⋅문현승²⋅지미정¹

Department of Ophthalmology, Gachon University Gil Hospital¹, Incheon, Korea
Bright World Eye Center², Seoul, Korea

Abstract

PURPOSE
To present a rare case of idiopathic orbital myositis involving levator palpebrae superioris. CASE SUMMARY: A 27-year-old male presented with a 1-week history of redness, discomfort, swelling, and drooping of his left upper eyelid. A computed tomography scan showed isolated enlargement of the right superior rectus/levator muscle complex. On examination, there was a left blepharoptosis, although eye movements were normal. The authors treated the patient with 3rd-generation cephalosporin; however, after 3 days, the symptoms did not improve. Subsequently, the patient was diagnosed with idiopathic orbital myositis and treated with oral corticosteroids for 1 month; the symptoms gradually resolved. CONCLUSIONS: Idiopathic orbital myositis is a subtype of nonspecific orbital inflammation primarily involving the extraocular muscles. Although the exact cause of orbital myositis is unknown, an immune-mediated pathophysiologic mechanism appears to be one of the causes. Medial rectus myositis is the most common, and isolated levator muscle myositis is very rare. The authors of the present study reported a case of orbital myositis involving the levator palpebrae superioris which should be considered a differential diagnosis of blepharoptosis with eyelid swelling.

Key Words: Corticosteroid;Levator muscle;Orbital myositis