- Very rare cause of intramural obstruction; only 16 cases of primary ureteral neoplasia reported.
- May be involvement with other tumor, eg lymphoma or intestinal carcinoma, rather than primary.
- Most frequently ureteral tumors are local extension from a bladder tumor (usually transitional cell carcinoma) into the ureters.
- Physical examination non-specific.
- Abdominal pain.
- Cranial to mid-abdominal mass.
- Depends on tumor type.
- Benign lesions can be cured.
- Malignant tumors have variable reported prognoses, with a range of 5 months to >2 years with surgery.
Reasons for treatment failure
- Metastatic disease occurrence.
- Local regrowth if mass is invasive into musculature.