Rule of 2s

• seen in 2% of population

• Located w/n 2 feet of ileocecal valve

• Length of 2 inches

• Sx usually before age 2

• 2 main complications in adults: diverticulitis (20%) and intestinal obstruction (40%) 

Diverticulitis:

• blind ending pouch containing fluid, air, or particulate matter. Mural thickening of diverticulum and adjacent small bowel. Mesenteric fat infiltration and fluid; extraluminal gas and LAD in some cases. 

• Attached band tethering Meckel diverticulum to umbilicus or mesentery may help w dx.

Hyperattenuating ring

Central dot sign: thrombosed vascular pedicle w/n inflammed epiploid appendage.

Larger (>3-5 cm) ball of dirty fat adjacent to ascending colon.