Rationale for Aggressive Resection and General Surgical Principles for Intracranial Gliomas.

Given the infiltrative nature of gliomas, controversy has long persisted over the value of their aggressive surgical removal. Nevertheless, in recent decades, the balance of opinion in neurosurgical oncology has shifted from a more nihilistic view that led to many patients' receiving stereotactic biopsy or very limited debulking of lesions for tissue diagnosis only, to more extensive tumor resections which relieve mass effect, lower intracranial pressure, reduce accompanying brain edema, and attenuate dependence on steroids. Achieving a clinically significant cytoreduction makes adjuvant therapy more successful, and ultimately helps to preserve or improve neurological function. Moreover, increased extent of brain tumor removal results in prolongation of progression-free survival and overall survival of patients and improves their quality of life. The beneficial effect of high resection rate may be noted even in selected cases of recurrent neoplasms. However, optimizing an aggressive surgical strategy for intracranial gliomas requires specific skills, availability of advanced intraoperative technological modalities, and the presence of a highly qualified multidisciplinary team of medical professionals for pre-, intra-, and postoperative care of such patients.