History taking should search for intake of raw or uncooked fish in pat
ients with acute abdominal symptoms. The colon is an uncommon localiza
tion of anisakiasis. We describe the case of a 31-year-old man with ac
ute abdominal pain whose abdominal CT scan showed a pseudotumoral form
ation of the colon. History taking and endoscopic ablation gave the di
agnosis of anisakiasis. Whole worm extraction led to restituo ad integ
rum or the colonic wall.