Retroperitoneal Ancient Schwannoma: A Case Report and Review of Literature Retroperitoneal Ancient Schwannom

Objectivewe present here a case of retroperitoneal ancient schwannoma and review this rare entity under the guidence of recent literature.casean 66‑year‑old men admitted to our clinic with a retroperitoneal mass in plain radiography without any symptoms. f-18 fdg pet- ct scan revealed 26 x 19 mm regularly contoured hypodense hypermetabolic nodular lesion in right inferior quadrant leaning on ileopsoas muscle. histopathology from a tru-cut biopsy and was reported as mixoid spindle cell tumor revealing mixoid liposarcoma. the patient underwent total excision of the retroperitoneal mass. postoperative pathologic diagnosis was reported as ancient schwannoma. the patient was recommended observation without any adjuvant treatment and is free of recurrence in postoperative 10th month.conclusionancient schwannomas are originating from perineural schwann cells. they are accepted as benign, but some may be mistakenly termed malignant. as they are well encapsulated, recurrences following complete surgical excision are uncommon.