Large bowel obstruction - due to a colonic tumor

Discussion:

Colorectal carcinoma is one of the commonest primary tumors, occurring largely in the older patient demographic.  It can however effect those under 30 years of age, especially when associated with familial or syndromic conditions, such as familial adenomatous polyposis syndrome.

It remains the commonest cause of large bowel obstruction.  In some patients, who typically present later, the ileocecal valve may be incompetent resulting in an associated small bowel obstruction (it 'deflates' itself into the small bowel first so 'buying' time before overwhelming symptoms for the patient).

This patients histology identified a mucinous adenocarcinoma. This histological subtype will often contain calcification in both the primary and distant metastases.

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