case_images: PMC9235299_01
case_images: The CT of the abdomen and pelvis with oral and rectal contrast (axial view), showing
  circumferential sigmoid thickening (white arrow) with luminal narrowing.. Abbreviation: CT, computed tomography.
case_images: 10.1177_23247096221106755-fig1.jpg
case_images: PMC9235299_01_10.1177_23247096221106755-fig1.jpg
case_images: fig1-23247096221106755
case_images: The CT of the abdomen and pelvis with rectal contrast showed significant intraluminal narrowing secondary to mass-like eccentric sigmoid colon wall thickening, without evidence of colovesical fistula (Figures 1 and 2).
case_images: The CT of the abdomen and pelvis with oral and rectal contrast (coronal view), showing
  circumferential sigmoid thickening (white arrow) with luminal narrowing and large
  multiloculated thick-walled fluid collection inferiorly.. Abbreviation: CT, computed tomography.
case_images: 10.1177_23247096221106755-fig2.jpg
case_images: PMC9235299_01_10.1177_23247096221106755-fig2.jpg
case_images: fig2-23247096221106755
case_images: The CT of the abdomen and pelvis with rectal contrast showed significant intraluminal narrowing secondary to mass-like eccentric sigmoid colon wall thickening, without evidence of colovesical fistula (Figures 1 and 2).
case_images: Colonoscopy showing an infiltrative, partially obstructing large mass in the sigmoid
  colon measuring 8 cm in length with no bleeding present.
case_images: 10.1177_23247096221106755-fig3.jpg
case_images: PMC9235299_01_10.1177_23247096221106755-fig3.jpg
case_images: fig3-23247096221106755
case_images: The mass was partially circumferential (involving half of the lumen circumference; Figure 3).