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Altitudinal hemianopias may be related to chiasmatic involvement. A case in which horizontal inferior hemianopia is associated with a tumor in the posterior fossa producing a triventricular hydrocephalus is described. The visual field defect is interpreted as a consequence of the pressure by a
Homonymous hemianopia (HH) is a visual field defect characterized by the involvement of two right or left halves of the visual field in both eyes. Patients with HH complain of difficulties with reading and scanning scenes in sufficiently rapid fashion to make sense of things as a whole. Some of
Homonymous hemianopsia may be caused by tumors in the region of the optic tract, the lateral geniculate body, the optic radiation, and the visual cortex. Tumors are responsible for about two-thirds of the temporal lesions and about one-half to one-third of the parietal and occipital lesions. With
BACKGROUND
Differential diagnosis of a cerebral lesion can prove to be a very challenging task for the treating physician. Many non-neoplastic neurological diseases can mimic brain neoplasms on neuroimaging.
METHODS
A previously healthy 23-year-old male, presented with blurred vision to the
OBJECTIVE
To determine new criteria for early detection of temporal hemianopia in patients with asymptomatic pituitary tumor.
METHODS
Fifteen patients without visual symptoms had pituitary tumor and subtle defects or normal visual fields by Goldmann perimetry. Twelve patients with visual symptoms
The authors report a case of 74-year-old woman suffering thrombosis of the confluence of sinuses after the left occipital transtentorial removal of a pineal region epidermoid cyst. Four days after the operation, the patient developed left homonymous hemianopsia. Magnetic resonance imaging revealed a