SURG-59. A RARE CASE OF COMBINED OCCURRENCE OF GLIOBLASTOMA MULTIFORME AND PHEOCHROMOCYTOMA: A CASE REPORT AND LITERATURE REVIEW

Abstract Glioblastoma is most common and malignant primary brain tumors. However, combined other solid organ malignancies sometimes occurred. To our knowledge, the combination of glioblastoma multiforme and pheochromocytoma is an exceedingly rare occurrence. As a result, we present the case of a 61-year-old male patient who suffered from slurred speech and unsteady gait due to left frontal glioblastoma with concurrent pheochromocytoma. The clinical course was retrospectively collected from medical records, including the lab data, imaging, surgical procedure and neurological examination results. We also provide a comprehensive review and discussion of the association between pheochromocytoma and glioblastoma, including genetic disorder the management strategy. The fluctuated blood pressure during brain surgery implied suspicious concurrent endocrine tumor in this patient. The patient was ultimately diagnosed with adrenal pheochromocytoma after left adrenalectomy and radical nephrectomy by urologist. No other malignancies or genetic disorders were found in this patient. Subsequently, this patient recovered well without any neurologic deficit and with effectively controlled blood pressure. The presence of a concomitant pheochromocytoma may precipitate paroxysmal catecholamine surges, fluctuations in cerebral perfusion, and an elevated risk of significant intra-cranial blood loss during neurosurgery. Once patient of brain tumors presented with uncontrolled or fluctuated blood pressure occurred, concurrent endocrine tumor should be considered.