Radiation optic neuropathy
| Autor: | Lanning B. Kline, Ricardo Ceballos, Joon Y. Kim |
|---|---|
| Rok vydání: | 1985 |
| Předmět: |
Adenoma
Male medicine.medical_specialty genetic structures medicine.medical_treatment Visual Acuity Optic neuropathy Pituitary adenoma Optic Nerve Diseases Medicine Humans Pituitary Neoplasms Radiation Injuries Scotoma Aged business.industry Pituitary tumors Brain Middle Aged medicine.disease eye diseases Surgery Visual field Radiation therapy Ophthalmology Optic nerve Female Radiology Differential diagnosis Visual Fields business Complication |
| Zdroj: | Ophthalmology. 92(8) |
| ISSN: | 0161-6420 |
| Popis: | Following surgery for pituitary adenoma, radiation therapy is an accepted treatment in reducing tumor recurrence. However, a potential therapeutic complication is delayed radionecrosis of perisellar neural structures, including the optic nerves and chiasm. This particular cause of visual loss, radiation optic neuropathy (RON), has not been emphasized in the ophthalmologic literature. Four cases of RON seen in the past five years are reported. Diagnostic criteria include: (1) acute visual loss (monocular or binocular), (2) visual field defects indicating optic nerve or chiasmal dysfunction, (3) absence of optic disc edema, (4) onset usually within three years of therapy (peak: 1-1 1/2 years), and (5) no computed tomographic evidence of visual pathway compression. Pathologic findings, differential diagnosis and therapy will be discussed in outlining the clinical profile of RON. |
| Databáze: | OpenAIRE |
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