Haemorrhagic retroperitoneal paraganglioma initially manifesting as acute abdomen: a rare case report and literature review

摘要

Computed Tomography Angiography (CTA) of superior mesenteric artery. The enhanced CT scan of the abdomen showed a retroperitoneal mass located posterior to the 3rd part of duodenum and below the head of the pancreas. The retroperitoneal mass had a slightly increased but non-uniform density shadow at venous phase (a). No enhancement appearances at arterial phase (b). The abdominal aorta sent out small branches to supply the tumor (arrow) (c). There was plentiful effusion around the tumor (d)