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Journal of Korean Neurosurgical Society 2002;32(3): 189-195.
Craniopharyngiomas: Predictive Factors of Recurrence.
Seong Yi, Kook Hee Yang, Dong Seok Kim, Joong Uhn Choi
Department of Neurosurgery, Yonsei University College of Medicine, Seoul, Korea.
The authors present a retrospective analysis of the long-term recurrence rate for the 79 craniopharyngima patients surgically treated between Jan 1989 and Dec 1999.
Tumor recurrence rates were analysed with respect to age of patients, symptom duration, tumor size, localization of tumor, morphology of tumor, the extent of surgical resection, pathologic diagnosis and the other treatment modalities.
For 79 patients, with a mean follow-up period of 5 years, the overall recurrence rate was 29%. Factors associated with decreased risk of recurrence was gross total tumor resection(p=0.01). Subtotal resection was associated with increased risk of tumor recurrence. The adjuvant radiation therapy was revealed efficient not in decreasing recurrence rate but in the delay of tumor recurrence time(p=0.05). There were no differences in recurrence rates for other factors.
A rigorous evaluation of recurrence for craniopharyngima must consider the extent of resection, as judged by postoperative imaging. Adjuvant radiation therapy or Gamma knife surgery could be the effective treatment modalities.
Key Words: Craniopharyngioma; Recurrence rate; Surgery; Postoperative imaging; Radiation therapy
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