[Results of the surgical treatment of patients with basal extracerebral parastem tumors of large and giant dimensions].

A retrospective analysis of the results of treatment of 123 patients with large and giant basal extracerebral parastem tumors was made. The majority of the neoplasms (81%) were acoustic neuromas and meningiomas. The nearest results of the treatment were good in 103 patients and unfavorable results were noted in 20 patients. Postoperative mortality was 8.9%. Four factors negatively influencing the outcome were revealed during the statistical analysis (p < 0.05): low Karnofsky score at admission, regrowth (recurrence) of the tumor, previously performed radiation therapy and shunt surgery as the first stage of treatment. These prognostic factors must be taken into account when choosing the best treatment of patients with parastem tumors.