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DBS is a typically well-tolerated operation for treatment of Parkinson�s disease, dystonia, and essential tremor (ET). Complications related to the surgical procedure and implanted hardware may occur. More commonly reported complications include hemorrhage, seizure, confusion, and infection. In this article, we report on a rare, but important, complication of DBS surgery, a brain cyst formation at the tip of the implanted ventralis intermedius nucleus (VIM) DBS lead in 2 patients who underwent the procedure at 2 different centers. The indication for surgery was debilitating ET, and in both cases, there was development of a delayed-onset neurological deficit associated with an internal capsule/thalamic cystic lesion formation located at the tip of the DBS lead. Case 1 presented within a few months post-DBS, whereas case 2 had a 10-mo delay to onset of symptoms. No clinical and radiological signs of infection were observed and both DBS systems were explanted with uneventful recovery. |
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benign essential tremor
complications
cyst
cyst,parenchymal
iatrogenic neurologic disorders
MRI,abnormal
neurologic complications of,surgery
Parkinson disease
Parkinson disease,surgical treatment of
Parkinson disease,treatment of
stimulation,deep brain
transient neurologic deficit
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