Fig. 7

A 54-year-old female with ACE inhibitor-induced angioedema. a The axial CE-CT of the neck shows diffuse enlargement of the tongue (arrow). Vessels are recognised within the tongue, reflecting decreased attenuation due to oedema. b The axial CE-CT of the abdomen on the same date shows thickened and contrast-enhancing uroepithelium of the renal pelvis (large arrow). Perinephric fluid is also noted (small arrows). No stone disease was recognised in the ureter or urinary bladder (not shown). Urinalysis was unremarkable except for microscopic haematuria, which returned to normal 3 days later. Follow-up CT 1 month later showed complete resolution of renal pelvic wall thickening and perinephric fluid (not shown)