Exponential growth of an asymptomatic meningioma responsive to fractionated Gamma Knife radiosurgery

Le résumé fourni par la source

Meningioma is the most common asymptomatic lesion detected on brain magnetic resonance imaging, and it is usually benign. Because of its generally indolent clinical nature, watchful observation is the preferred primary treatment option in the majority of cases. However, in rare cases, meningioma progresses with exponential growth exceeding the usual expectations, resulting in a very difficult situation for clinical management. Herein, we report a case of small asymptomatic meningioma diagnosed incidentally during the treatment of hemorrhagic stroke. It was left without treatment or regular follow-up and became a huge mass over 7 years. It was then treated with fractionated Gamma Knife radiosurgery and showed significant volume reduction. This case demonstrates the efficacy of fractionated radiosurgery for large meningiomas and simultaneously emphasizes the importance of regular imaging follow-up or proactive treatment upon the initial diagnosis of asymptomatic meningioma, so that we may not miss the optimal timing for treatment.

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