TY - JOUR
AR - COR-2020-8-122
TI - Implantation of Colorectal Cancer from the Upper Urinary Tract to the Bladder via Urine
AU - Katsuhiro , Makino
AU - Taketo , Kawai
AU - Yusuke , Sato
AU - Naohiro , Makise
AU - Takeru , Morishige
AU - Takahiro , Oshina
AU - Yoshiyuki , Akiyama
AU - Yuta , Yamada
AU - Masaki , Nakamura
AU - Daisuke , Yamada
AU - Motofumi , Suzuki
AU - Tetsuo , Ushiku
AU - Haruki , Kume
JO - Clinical Oncology and Research
PY - 2020
DA - Thu 20, Aug 2020
SN - 2613-4942
DO - http://dx.doi.org/10.31487/j.COR.2020.08.22
UR - https://www.sciencerepository.org/implantation-of-colorectal-cancer-from-the-upper-urinary-tract-to_COR-2020-8-122 
KW - Implantation, colorectal cancer, adenocarcinoma, ureteral invasion, intravesical recurrence
AB - Although the implantation of urothelial carcinoma from the upper urinary tract to the bladder occurs
frequently, the involvement of cancers of other histologic types is rare. Here, we present an unusual case of
intravesical recurrence, following ureteral invasion, by colorectal cancer. A 69-year-old woman developed
a local recurrence of colorectal cancer involving the sigmoid colon and left ureter. The patient underwent a
sigmoidectomy and left nephroureterectomy. Six months later, bladder tumors were observed, and a
transurethral resection was performed. Histological examination of the bladder tumors revealed
adenocarcinoma consistent with the findings of the colorectal cancer that had been previously resected. The
most probable mechanism of intravesical recurrence would be the implantation of colorectal cancer cells
from the upper urinary tract to the bladder via urine.