ISSN 1738-6217 (Print)
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J Kor Soc Ster Func Neurosurg. 2020 16(2): 56-60
ⓒ Journal of the Korean Society of Stereotactic and Functional Neurosurgery
Incidental Meningioma of the Elderly Patients: Gamma Knife Radiosurgery or Observation?
Kwang Seok Han, MD, Chang Kyu Park, MD, PhD, Bong Jin Park, MD, PhD, Young Jin Lim, MD, PhD
Department of Neurosurgery, Kyung Hee University College of Medicine, Seoul, Korea

Purpose: Meningiomas are the most common intracranial benign neoplasm. Surgical treatment is the most effective treatment, but treatment modalities in cases of incidental meningioma in the elderly patients are difficult to determine. In this study, we analyzed the results of simple observation and stereotactic radiosurgery in the elderly patients with meningioma. Methods: Form August 2000 to December 2019, we analyzed all patients aged over 70 years who were diagnosed with meningioma at our hospital. Changes in the lesion were assessed with imaging. Results of stereotactic radiosurgery and observation were analyzed. Additional analyses were performed according to the tumor location. Results: We included 206 patients, 83 of whom underwent simple imaging follow-up while 123 underwent gamma knife radiosurgery (GKS). For tumors located at the skull base, GKS was preferred. The mean size of meningioma was 21.3??10.7mm2 at the time of diagnosis among all patients, 19.2??11.3mm2 among patients who underwent simple observation, and 22.6??10.1mm2 for patients who underwent GKS. The mean follow-up duration was 70.04??47.8 months. At the last follow-up, the tumor sizes were 21.9??13.5 and 23.7??14.1mm2 in the observation and GKS groups. Compared to baseline, the size increase was approximately 14% in the observation group. The tumor control rate was 87.8% in GKS groups. There was no complication such as adverse radiation effect in GKS group. Conclusions: Treatment modalities are difficult to select for the elderly patients with incidental meningioma. Imaging tests accurately scheduled in early stages are important. Stereotactic radiosurgery can be helpful if early intervention is required.
Key words : Meningioma, Gamma knife radiosurgery, Observation, Prognosis
중심단어 : Meningioma, Gamma knife radiosurgery, Observation, Prognosis

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