Supratentorial intraxial cavernous hemangioma with adjacent convexity meningioma: Association or Coincidence?

Background: The co-occurrence of two histologically distinct tumors in the same region separated by a transitional cell population zone or without any histological mixing is known as a true collision tumor. Meningioma, the most common benign intracranial neoplasm, arises from meningothelial cells while a cerebral cavernoma is a benign vascular hamartoma.Case reportWe report a case of a 40-year-old female who presented with right body weakness and seizures. After gross total resection of both tumors, histological examination was consistent with a WHO grade I meningothelial meningioma and cavernous angioma completely separated by gliotic tissue. On subsequent follow-ups, the patient had an improvement of motor power from 0 to 4 out of 5 in the affected extremities and was seizure free without the use of medication. Conclusion: This patient had no risk factors for the development of this association. We believe the total removal of both tumors resulted in the total seizure control of this patient