Retroperitoneal glomus tumor: CT and MRI appearance

We reported a 48-year-old lady with incidental finding of a retroperitoneal tumor during regular ultrasound examination. Computed tomography (CT) revealed a tumor in retroperitoneum with strong enhancement comparable to vascular structure. In magnetic resonance imaging (MRI), the lesion showed high signal intensity on T2 weighted imaging, indicating its nature as a vascular tumor. Pathological examination disclosed the diagnosis of glomus tumor. We have a thorough discussion about the correlation between the imaging findings and the pathological features.