title: Delayed radiation necrosis of the optic nerve.
mesh_terms: D000368:Aged; D000867:Anterior Chamber / Q000473:pathology; D002294:Carcinoma, Squamous Cell / Q000532:radiotherapy*; D003037:Cobalt Radioisotopes / Q000008:administration & dosage; D006801:Humans; D007498:Iris / Q000473:pathology; D007908:Lens, Crystalline / Q000473:pathology; D008297:Male; D008443:Maxillary Sinus; D009336:Necrosis / Q000209:etiology; D009900:Optic Nerve / Q000473:pathology / Q000528:radiation effects*; D009915:Orbit / Q000528:radiation effects; D009918:Orbital Neoplasms / Q000532:radiotherapy; D010255:Paranasal Sinus Neoplasms / Q000532:radiotherapy*; D010523:Peripheral Nervous System Diseases / Q000209:etiology*; D011867:Radioisotope Teletherapy / Q000009:adverse effects*
chemical_list: D003037:Cobalt Radioisotopes