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Case Reports
. 2011 Jul;14(3):208-10.
doi: 10.4103/0972-2327.85898.

Cysticercosis of midbrain presenting with fluctuating ptosis

M Netravathi  1 , A S Banuprakash, Renu Khamesra, N Hemantakumar Singh
Affiliations
Case Reports

Cysticercosis of midbrain presenting with fluctuating ptosis

M Netravathi et al. Ann Indian Acad Neurol. 2011 Jul.

Abstract

Fluctuating ptosis is usually caused by Myasthenia gravis. There are a few case reports of central causes of fluctuating ptosis. A 58-year-old man presented with fluctuating ptosis of one year duration. He was diagnosed as having ocular myasthenia and investigated. On evaluation, his electrophysiological tests revealed negative decremental response and results of neostigmine test was negative. During follow-up, patient developed headache. Imaging of the brain revealed midbrain cysticercosis granuloma. The focal encephalitis and edema was responsible for fluctuating ptosis. It is therefore essential to be aware of conditions that cause such pseudomyasthenic features. Patients with ptosis need to be evaluated for other rare central cause especially when neostigmine test is negative.

Keywords: Midbrain; myasthenia; neurocysticercosis; pseudomyasthenia; ptosis.

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Conflict of interest statement

Conflict of Interest: Nil

Figures

Figure 1
Figure 1
MRI brain (a) T1-weighted sequence showing hyperintense rim with scolex showing, (b) Diffusion-weighted sequence showing scolex within the ring lesion, (c) T1-weighted image with gadolinum enhancement showing contrast enhancing ring and scolex and (d) Constructive Interference Steady state (CISS) 3D sequence showing the cystic lesion
See this image and copyright information in PMC

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