| Title |
Superficial Siderosis and Episodic Fourth Nerve Paresis |
| Creator |
Hashimoto, M; Hoyt, WF |
| Affiliation |
Department of Ophthalmology, School of Medicine, University of California, San Francisco 94143-0350, USA. |
| Abstract |
We describe a patient with superficial siderosis who had an episodic unilateral fourth nerve paresis. The superficial siderosis was caused by small repeated intraventricular hemorrhages from a periventricular cavernous angioma. T2-weighted magnetic resonance images demonstrated a rim of low signal intensity at the brain surface, characteristic of hemosiderin deposition. These low-signal-intensity deposits included the dorsal brain stem around the anterior medullary velum. We suggest that the hemosiderin deposits affected the proximal portion of the fourth nerve where it contains central myelin and that this in some way caused unstable conduction of nerve impulses through the nerve. |
| Subject |
Adult; Brain Neoplasms/complications; Cerebral Hemorrhage/etiology; Cranial Nerve Diseases/diagnosis; Cranial Nerve Diseases/etiology; Diplopia/etiology; Female; Hemangioma, Cavernous/complications; Humans; Magnetic Resonance Imaging; Paralysis/diagnosis; Paralysis/etiology; Siderosis/diagnosis; Siderosis/etiology; Trochlear Nerve/pathology |
| Format |
application/pdf |
| Publication Type |
Journal Article |
| Collection |
Neuro-Ophthalmology Virtual Education Library: Journal of Neuro-Ophthalmology Archives: https://novel.utah.edu/jno/ |
| Publisher |
Lippincott, Williams & Wilkins |
| Holding Institution |
Spencer S. Eccles Health Sciences Library, University of Utah |
| Rights Management |
© North American Neuro-Ophthalmology Society |
| Setname |
ehsl_novel_jno |
| ID |
224777 |
| Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6pc67fh/224777 |
