Levator palpebrae superioris muscle: MR evaluation of enlargement as a cause of upper eyelid retraction in Graves disease
| Autor: | S Nagamachi, H Nakahara, N Murakami, Takashi Ohnishi, Shigemi Futami, Hiroaki Hoshi, S Jinnouchi, K. Watanabe, S Noguchi |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
Adult
Male Levator palpebrae superioris muscle Graves' disease Eye disease Graves' ophthalmopathy Muscular Diseases medicine Humans Radiology Nuclear Medicine and imaging EYELID RETRACTION medicine.diagnostic_test business.industry Muscles Eyelids Magnetic resonance imaging Anatomy Middle Aged medicine.disease Control subjects Magnetic Resonance Imaging Graves Disease eye diseases Sagittal plane medicine.anatomical_structure Eyelid Diseases Female business |
| Zdroj: | Radiology. 188:115-118 |
| ISSN: | 1527-1315 0033-8419 |
| DOI: | 10.1148/radiology.188.1.8511284 |
| Popis: | Sympathetic stimulation of the Muller muscle may be responsible for most of the medically reversible cases of eyelid retraction in patients with Graves disease. The authors studied 21 patients with class I Graves ophthalmopathy (GO), 32 patients with Graves disease without ophthalmopathy (GD), and 12 control subjects. T1-weighted spin-echo magnetic resonance (MR) imaging was performed with a 0.5-T superconducting system. The thickness of the levator palpebrae superioris muscle was determined from sagittal MR images. The thickness of the levator muscles in patients with GD did not differ from the thickness in control subjects, but the levator muscles in patients with GO were significantly thickened (P < .01). The thickness of the levator muscles in patients with GO was significantly greater than in those of patients with GD (P < .01). In 64 orbits of patients with GD, 3% of levator muscles were thickened. In 33 of 40 (83%) orbits of patients with GO presenting with upper eyelid retraction, the levator muscles were thickened. Sagittal MR imaging demonstrated thickening of the levator muscles in patients with persistent upper eyelid retraction. The authors conclude that a thickened levator muscle probably causes upper eyelid retraction in patients with GO. |
| Databáze: | OpenAIRE |
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