Solitary filling defect with a ureter, as seen on conventional IVU or CT IVU has a few differentials which can be remembered using this mnemonic:
- CUPS MET
Mnemonic
- C: clot
- U: ureteric stone
- P: polyp
- S: sloughed papilla
- M: metastasis
- E: endometriosis
- T: tuberculosis, transitional cell carcinoma (TCC)