Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0017638 (glioma)
 30,880 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

We studied the effects of intra-arterial chemotherapy (IAC) with a new nitrosourea (hydroxyethyl-chloroethyl nitrosourea: HeCNU) on the visual system of 68 patients with malignant gliomas. The intra-arterial chemotherapy was given as a complementary treatment of glioma after surgery (19 patients), after tumor recurrence (28 patients) and as the preliminary treatment before radiotherapy (21 patients). Eleven patients (16%) suffered a visual complication after two or more courses of chemotherapy. The main visual symptoms included mild to major decrease of visual acuity and in some cases ocular pain, palpebral edema and conjunctival injection. The delay in onset of ocular symptoms from the last course of IAC varied from 1 week to 9 months. From ophthalmoscopic findings, visual field testing and fluorescein angiography, the visual symptoms presented by our patients could be related to ischemic optic neuropathy or retinal vasculopathy. None of the patients had hypertension, diabetes, cardiopathy or hematological disease. Statistical analysis failed to demonstrate a relationship between the occurrence of visual toxicity and patient age, number of courses of HeCNU, the vascular axis treated, total systemic dose or dose by carotid artery, suggesting a possible specific sensitivity of some patients to chemotherapy. The pathophysiology and the therapeutic implications of this visual toxicity are discussed.
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PMID:Visual toxicity following intra-arterial chemotherapy with hydroxyethyl-CNU in patients with malignant gliomas. A prospective study with statistical analysis. 174 75

A 49-year-old woman with a 6-year history of headaches was found to have a pale right optic disc with narrowed retinal arterioles and a congested left optic disc. Her visual acuity was 20/20 in each eye with normal visual fields in May 1983. These findings were attributed to a previous attack of non-arteritic anterior ischemic optic neuropathy (AION). She had a normal neurologic examination and a normal head computed tomographic (CT) scan performed 2 years prior to her initial ophthalmologic evaluation. She was followed over the next 2 years without change in her fundus examination. In December 1987, after a generalized tonic-clonic seizure, she was found to have a large right frontoparietal mass without direct impingement on the optic nerves, or chiasm on neuroradiological studies. At this time she developed marked papilledema in the left eye with a pale optic disc in the right eye remaining unchanged. Histopathological diagnosis of malignant glioma was made. Two diseases, ischemic optic neuropathy and glioma, in one patient represents a bizarre example of the pseudo-Foster Kennedy syndrome.
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PMID:Pseudo-Foster Kennedy syndrome in a patient with anterior ischemic optic neuropathy and a nonbasal glioma. 214 36

Magnetic resonance imaging is the modality of choice to investigate patients with central nervous system diseases. In patients with optic neuritis, early MRI allows positive and differential diagnosis, and gives arguments for prognosis. The technique should be adapted for the exploration of visual pathways. Inflammatory optic neuritis is characterized by an early signal abnormality within the optic nerve, whereas optic nerve MRI is normal in the early phase of ischemic optic neuropathy. MRI also detects compressive and infiltrative lesions. Meningiomas are characterized by abnormalities within the peri-optical spaces, whereas a global increase in the size of the optic nerve is in favor of a glioma.
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PMID:Contribution of imaging to the diagnosis of optic neuropathies. 2298 Dec 71