Search Results

You are looking at 1 - 5 of 5 items for

  • Author or Editor: Richard Bennett x
Clear All Modify Search
Restricted access

Bennett M. Stein, Michael S. Tenner and Richard A. R. Fraser

✓ Of 150 children undergoing surgery for cerebellar astrocytoma, 20% had evidence of postoperative hydrocephalus. This was manifested by either progressive symptomatic rise in intracranial pressure or abnormal mental and motor states accompanied by normal CSF pressure. This syndrome is presumed to be due to cisternal and subarachnoid adhesions formed after surgery. Prompt shunting in advanced cases resulted in reversal of neurological abnormalities.

Restricted access

Peter W. Carmel, Richard A. R. Fraser and Bennett M. Stein

✓ The results of suboccipital craniectomy for varying types of posterior fossa pathology in 50 children are reported. Thirty-five (70%) experienced aseptic meningitis postoperatively, with spiking fever and meningismus; cerebrospinal fluid (CSF) studies revealed pleocytosis, high protein values, and depression of glucose. The absence of bacterial pathogens in serial CSF cultures distinguishes this syndrome from septic meningitis. Aseptic meningitis does not respond to antibiotics, but steroids in suitable doses will modify or suppress the clinical and CSF picture. This syndrome may predispose to postoperative hydrocephalus, but steroid therapy may diminish this risk.

Restricted access

Kaisorn L. Chaichana, Khan K. Chaichana, Alessandro Olivi, Jon D. Weingart, Richard Bennett, Henry Brem and Alfredo Quiñones-Hinojosa

Object

As the population ages, the incidence of glioblastoma multiforme (GBM) among older patients (age > 65 years) will increase. Older patients, unlike their younger counterparts, are not often offered aggressive surgery because of their age, comorbidities, and potential inability to tolerate surgery. The goal of this study was to identify preoperative factors associated with decreased survival for older patients who underwent resection of a GBM. The identification of these factors may provide insight into which patients would benefit most from aggressive surgery.

Methods

All patients older than 65 years who underwent nonbiopsy resection of an intracranial GBM at a single institution between 1997 and 2007 were retrospectively reviewed. Factors associated with overall survival were assessed using multivariate proportional hazards regression analysis after controlling for peri- and postoperative factors known to be associated with outcome (extent of resection, carmustine wafer implantation, temozolomide chemotherapy, and radiation therapy). Variables with p < 0.05 were considered statistically significant.

Results

A total of 129 patients with an average age of 73 ± 5 years met the inclusion/exclusion criteria. At last follow-up, all 129 patients had died, with a median survival of 7.9 months. The preoperative factors that were independently associated with decreased survival were Karnofsky Performance Scale (KPS) score less than 80 (p = 0.001), chronic obstructive pulmonary disease (p = 0.01), motor deficit (p = 0.01), language deficit (p = 0.005), cognitive deficit (p = 0.02), and tumor size larger than 4 cm (p = 0.002). Patients with 0–1 (Group 1), 2–3 (Group 2), and 4–6 (Group 3) of these factors had statistically different survival times, where the median survival was 9.2, 5.5, and 4.4 months, respectively. In log-rank analysis, the median survival for Group 1 was significantly longer than that for Group 2 (p = 0.004) and Group 3 (p < 0.0001), while Group 2 had longer survival than Group 3 (p = 0.02).

Conclusions

Older patients with an increasing number of these factors may not benefit as much from aggressive surgery as patients with fewer factors. This may provide insight into identifying which patients older than 65 years of age may benefit from aggressive surgery.