Posterior Fossa Migration of the Lumboperitoneal Shunt Catheter: A Case Report

Spontaneous migration of the shunt catheter into the posterior cranial fossa is very rare complication of lumboperitoneal shunt operation. The authors report a case with communicating hydrocephalus following ruptured intracranial aneurysm for which a lumboperitoneal shunt was placed. Four years later, she was presented with low back pain after the slip-down in jury, and radiologic studies revealed compression fracture at T12 and intracranial migration of shunt catether into the posterior fossa. From our knowledge, there is only one other such case reported in the literature.

Prognostic Factors of Lumboperitoneal Shunt in Communicating Hydrocephalus

OBJECTIVE: A 10-year retrospective lumboperitoneal(LP) shunt surgery was reviewed in order to verify the several prognostic factors including the etiology, the findings of brain computed tomography(CT) and/or magnetic resonance imaging(MRI), and the effect of lumbar drainage which have been implicated in the result of LP shunt. PATIENTS AND MEHTODS: A series of 32 patients who underwent LP shunt surgery between March 1988 and May 1998 for the management of communicating hydrocephalus was reviewed. RESULTS: The etiology of communicating hydrocephalus was subarachnoid hemorrhage(SAH) in 19 cases(59.4%), head trauma in 10 cases(31.2%), intracerebral hemorrhage in 2 cases(6.3%), meningitis in 1 case(3.1%), tumor in 1 case(3.1%), and idiopathic in 2 cases(6.3%). The mean follow-up period was 1.2 years(range, 2 week to 8.5 year). Among them, twenty four patients(75%) were clinically improved after shunt operation. The result of LP shunt was not related to the etiologies and many findings of brain CT/MRI such as ventricular index, Evan's index, periventricular low density, obliteration of cerebral sulci and cortical atrophy. However, the result of LP shunt was significantly related to the effect of preoperative lumbar drainage(p=0.0184). CONCLUSION: This result suggests that the effect of preoperative lumbar drainage has a significant role in predicting the result of LP shunt in patients with communicating hydrocephalus.

Clinical Analysis of Metastatic Brain Tumors

Several prognostic factors have been implicated in survival prolongation in patients with metastatic brain tumors. Among these, surgery has been regarded as very significant one with respect to life prolongation and improving the quality of survival in such patients. From August 1982 through July 1996, a series of 31 patients with metastatic brain tumors among 785 patients with operated brain tumors, whose medical records, X-rays and follow-ups were avilable, was studied retrospectively to evaluate the beneficial effects of surgery. Despite the limitations inherent to the retrospective study and limited number of patients, we divided these patients into two groups to find out any statistical differences in terms of survival and quality of survival among them: 1) Conservative group(8 nonoperated patients: 5 patients with biopsy or partial resection): 13, and 2) Surgical treatment group(17 totally resected patients: one patient with subtotal resection): 18. The quality of survival was assessed by Karnofsky performance(KP) scale before and after each treatment. The survival of the patients in the surgical treatment group was longer than the conservative treatment group(14.5 months/10 months), but this was not statistically significant(p value: 0.3305). However, improvement of quality of survival, in terms of KP scale, was significantly higher in the surgical treatment group(p value: 0.0027). Although confounded by the lack of controlled, randomized study and limitations of retrospective study, aggressive surgery can be regarded to have a significant role in improving the quality of survival in patients with metastatic brain tumors.