Seesaw nystagmus caused by giant pituitary adenoma: case report

Arquivos de neuro-psiquiatria
Frederico Castelo MouraMário Luiz Ribeiro Monteiro

Abstract

Giant pituitary adenomas are uncommonly large tumors, greater than 4 cm in size that can produces endocrine symptoms, visual loss and cranial nerve palsies. We report the rare occurrence of seesaw nystagmus as the presenting sign of giant pituitary adenoma. A 50-year-old man presented with headache associated with visual loss and seesaw nystagmus. Perimetry revealed bitemporal hemianopia and magnetic resonance imaging showed a giant pituitary adenoma. After surgery, nystagmus disappeared. Our case is relevant in understanding its pathogenesis since it documents seesaw nystagmus in a patient bitemporal hemianopia due to a large tumor but without mesencephalic compression.

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Citations

Nov 15, 2017·Journal of Neuro-ophthalmology : the Official Journal of the North American Neuro-Ophthalmology Society·Peter Yat-Ming WooKwong-Yau Chan
Jun 4, 2020·BMJ Case Reports·Gunjan SalujaPriyavrat Bhatia
Jan 14, 2020·Neuro-ophthalmology·Rimesh PalApinderpreet Singh

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