case_images: PMC9381362_01
case_images: Colostomy and prolapse mucus fistula (
  A
  ). Three distinct lumens of the colostomy (
  B
  ).
case_images: 10-1055-s-0042-1750318-i210635cr-1.jpg
case_images: PMC9381362_01_10-1055-s-0042-1750318-i210635cr-1.jpg
case_images: FI210635cr-1
case_images: The ostomy and mucus fistulas were matured ( Fig. 1 ) and the patient was referred to our center for further management. 
case_images: High-resolution three-dimensional imaging showing three colonic lumens of proximal colon, distal colon with one blind ending lumen, and one fistulizing to the bladder.
case_images: 10-1055-s-0042-1750318-i210635cr-2.jpg
case_images: PMC9381362_01_10-1055-s-0042-1750318-i210635cr-2.jpg
case_images: FI210635cr-2
case_images: High-resolution and three-dimensional contrast imaging demonstrated two lumens of the distal colon with one ending as a fistula to the bladder and the other blind ending ( Fig. 2 ).
case_images: Diagram of the operative findings.
case_images: 10-1055-s-0042-1750318-i210635cr-3.jpg
case_images: PMC9381362_01_10-1055-s-0042-1750318-i210635cr-3.jpg
case_images: FI210635cr-3
case_images: The colonic duplication continued all the way to the cecum ( Fig. 3 ).
case_images: PMC9381362_02
case_images: Intraoperative findings. Three colonic lumens of colostomy (
  A
  ). Two colonic lumens of mucus fistula (
  B
  ). Ileal, cecal, and appendiceal duplication (
  C
  ). Entire colon with normal outer appearance despite multiple internal lumens (
  D
  ).
case_images: 10-1055-s-0042-1750318-i210635cr-4.jpg
case_images: PMC9381362_02_10-1055-s-0042-1750318-i210635cr-4.jpg
case_images: FI210635cr-4
case_images: An ileal duplication and fused appendiceal duplication were also identified intraoperatively ( Fig. 4 ). A stapler was used to create a single lumen in the ascending and descending colons ( Fig. 4 ).