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Show LITERATURE ABSTRACTS 297 netic resonance imaging detected a retained wood fragment in the orbit. In both cases, a computerized tomographic scanning suggested only intraorbital air. Lyn A. Sedwick, M. D. Gadolinium- DPTA- Enhanced Magnetic Resonance Imaging in Experimental Optic Neuritis. Guy J, Fitzsimmons J, Ellis EA, et al. Ophthalmology 1990; 97: 601- 7 ( May). [ Reprint requests to Dr. John Guy, Neuro- Ophthalmology Service, Box J- 284, JHMHC, University of Florida, College of Medicine, Gainesville, FL 32610- 0284.] Guinea pigs were sensitized with acute allergic encephalomyelitis and studied with gadoliniumenhanced magnetic resonance imaging. Leakage of the paramagnetic dye into the optic nerve chiasm was found as early as 5 to 8 days after sensitization and preceded paralysis or ataxia. These findings suggest that this disruption of blood- optic nerve barrier is the first event in primary demyelination. Lyn A. Sedwick, M. D. Immunohistochemical Evidence of IgE Involvement in Graves' Orbitopathy. Raikow RB, Dalbow MH, Kennerdell JS, et al. Ophthalmology 1990; 97: 629- 35 ( May). [ Reprint requests to Radmila B. Raikow, Ph. D., Allegheny- Singer Research Institute, 320 E. North Ave, Pittsburgh, PA 15212.] The authors demonstrated IgE- positive material in muscles of patients with Graves' disease, with more prominent IgE accumulations in the more clinically severe cases. They postulate that IgE may playa role in a variety of autoimmune diseases. Lyn A. Sedwick, M. D. Clinical Course of an Incompletely Removed Cavernous Hemangioma of the Orbit. Henderson JW, Farrow GM, Garrity JA. Ophthalmology 1990; 97: 625- 8 ( May). [ Reprint requests to Dr. John W. Henderson, Emeritus Office, Mayo Clinic, 200 First St., SW, Rochester, MN 55905.] A patient with an incompletely excised cavern-ous hemangioma was followed for 18 years during which time the tumor grew and then spontaneously regressed. This case provides a unique view of the possible natural history of this lesion. Lyn A. Sedwick, M. D. Clinical Characteristics of Metastatic Orbital Tumors. Goldberg RA, Rootman J. Ophthalmology 1990; 97: 620-- 4 ( May). [ Reprint requests to Dr. R. Goldberg, Jules Stein Eye Institute, 100 Stein Plaza, Los Angeles, CA 90024- 7006.] The authors discuss 38 cases of metastasis to the orbit seen between 1979 and 1988. In 25% of cases, the orbital lesion was the first indication of cancer and led to investigation for a primary lesion. The authors discuss the computerized tomographic characteristics and clinical presentations of these tumors and nicely tabulate sites of primary in all patients. Lyn A. Sedwick, M. D. Orbital Decompression for Graves' Ophthalmopathy by Inferomedial, by Inferomedial Plus Lateral, and by Coronal Approach. Mourits M, Koornneef L, Wiersinga W, et a1. Ophthalmology 1990; 97: 636- 41 ( May). [ Reprint requests to Dr. Maarten Ph. Mourits, Orbita Centrum, Academisch Medisch Centrum A- 2116, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands.] The authors, all from The Netherlands, report their experience with decompression via inferomedial approach ( skin incision through lower eyelid), lateral approach ( Kr6nlein lateral orbitotomy), and/ or coronal approach ( incision in scalp). The authors tabulate their results--- in improvement in visual function and proptosis--- and discuss complications. Their decompression techniques may have advantages over Ogura transantral decompression in that they are not as likely to cause extraocular muscle imbalance. The Ogura procedure often does cause this imbalance, as reported in published series. Lyn A. Sedwick, M. D. I Clin Nellro · ophthalmol, Vol. 10, No. 4, 1990 |
