a novel case of quartet tumor: meningioma, angiomyolipoma, ependymoma and sarcoma: report of a case and review of the literature

multiple primary tumors in a single patient are relatively rare when four or more distinct lesions are considered. herein, we report a case of woman with four different primary tumors: meningioma, renal angiomyolipoma, spinal ependymoma and high-grade soft tissue sarcoma. there was no family history and hereditary syndrome. the genetic analysis was completely normal. to best of our knowledge, the present patient is the first case in the literature, who presented with these four types of tumors.