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A Double Metachronous Ureter Metastasis following Curative Resection of Rectal Cancer

Authors
  • Aghalarov, Ilgar
  • Förster, Sarah
  • Tannapfel, Andrea
  • Ubrig, Burkhard
  • Uhl, Waldemar
  • Belyaev, Orlin
Type
Published Article
Journal
Case Reports in Gastroenterology
Publisher
S. Karger AG
Publication Date
Apr 29, 2021
Volume
15
Issue
1
Pages
450–455
Identifiers
DOI: 10.1159/000512424
Source
Karger
Keywords
License
Green
External links

Abstract

A malignant ureteral obstruction is most often due to primary tumors of the ureter. However, it can occur secondary due to external tumor compression or metastatic infiltration. Distant metastases to the ureter are extremely rare. We present a case of a rare double distant metachronic metastasis to the right ureter as well as to the right renal pelvis in a 58-year-old female with a history of anterior resection for rectal cancer 2 years earlier. She presented with recurrent urinary tract infection and right hydronephrosis caused by an ureteral mass. The patient underwent a right nephroureterectomy via laparotomy. Two metastases of the rectal cancer in the ureteral mucosa were verified at histology. On account of the infiltration of the right ureteral orifice, a completion transurethral resection of the tumor was performed. A follow-up 3 and 6 months later showed no signs of tumor relapse and the patient was doing well. The differential diagnosis of malignant ureteral obstruction in patients with history of colorectal cancer should include the rare possibility of distant metastasis from the primary tumor.

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