subtotal resection
Surgical removal of 90-99% of visible tumor tissue, leaving minimal residual disease.
Full Definition
Subtotal resection refers to the surgical removal of the majority of a brain tumor while intentionally leaving small amounts of residual tissue to preserve neurological function. This approach is typically employed when complete removal would risk damage to eloquent brain areas or critical neurovascular structures. In neurosurgical oncology reporting, subtotal resection is quantified as removal of 90-99% of the tumor volume as assessed by postoperative imaging. The decision to perform subtotal rather than gross total resection must balance oncological outcomes with functional preservation, often requiring intraoperative monitoring and mapping techniques.
Usage
Usage note: Should be quantified with percentage when possible for clarity.
In Context
- "Given the tumor's proximity to the motor cortex, subtotal resection was deemed appropriate." — surgical decision note
- "The patient underwent subtotal resection with 95% tumor removal confirmed on postoperative MRI." — discharge summary