A Case Report of Surgical Resection of Primary Retroperitoneal Squamous Cell Carcinoma and Postoperative Local...

Primary retroperitoneal squamous cell carcinoma (SCC) is an exceptionally rare malignancy. Here, we present the case of a 55-year-old female with a retroperitoneal tumor who underwent complete surgical resection. Histopathological examination confirmed SCC with no evidence of an alternative primary site, leading to a diagnosis of primary retroperitoneal SCC. Local recurrence in the aortocaval area was detected seven months postoperatively. The second surgical resection achieved complete removal, and the patient has remained disease-free for over four years without further chemotherapy or radiotherapy. This is the first case report of complete surgical resection of a locally recurrent retroperitoneal SCC without additional treatment, leading to a better prognosis.