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A 51-year-old female with an ependymal cyst in the left occipital lobe presented with headache, vomiting, dizziness, and right incomplete homonymous hemianopsia. Following a cyst-ventricular communication and cyst-peritoneal shunting procedure, the visual field loss improved markedly. On the basis of the visual field symptoms, computed tomographic findings, and intraoperative observations, the cyst was considered to have developed in the vicinity of the body and posterior horn of the left lateral ventricle, extending to the left occipital lobe.

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