Retroperitoneal anastomotic hemangioma with significant steatosis: A case report and literature review

Retroperitoneal AHs are often located in the perirenal fat space. Preoperative imaging often suggests a diagnosis of paraganglioma due to the location and imaging findings, indicating that accurate identification of the mass type by imaging diagnosis is still challenging. AH with significant steatosis cannot be accurately diagnosed by gross examination and histology alone, while immunohistochemistry and molecular pathology can assist in the diagnosis.