supramaximal resection
Surgical removal of tumor tissue beyond the contrast-enhancing margin to include surrounding brain tissue that may harbor microscopic disease.
Full Definition
An aggressive surgical approach in neurosurgical oncology where the neurosurgeon removes not only the visible tumor but also extends resection into the surrounding brain tissue that appears normal on conventional imaging. This technique is based on the understanding that gliomas often infiltrate beyond their radiographically visible borders. Supramaximal resection aims to improve local tumor control and potentially extend survival, but must be carefully balanced against the risk of neurological morbidity. The procedure requires sophisticated intraoperative monitoring and mapping techniques to preserve critical brain functions while maximizing tumor removal.
Usage
Usage note: Editors should distinguish this from 'gross total resection' which refers to complete removal of visible tumor only.
In Context
- "The surgical team performed a supramaximal resection while monitoring cortical function to preserve language areas." — Operative report
- "Recent studies suggest supramaximal resection may improve outcomes in low-grade gliomas when performed safely." — Clinical research paper