Stenosis of the mid-portion of the right ureter and moderate hydroneph
rosis of the right kidney was seen on the intravenous pyelography of a
60-year-old patient consulting for sudden onset pain in the right ing
uinal region. Confirmation was obtained with retrograde urography and
abdominal computed tomography. Right nephroureterectomy was performed.
The pathology examination revealed characteristic features of amylosi
s located solely at the narrowing of the ureter. Isolated amylosis of
the ureter is rare and difficult to diagnose.