Presentation
Abdominal pain and sanguinolent stool.
Patient Data
Age: 55 years
Gender: Male
From the case:
Apple core sign

Barium enema was performed and showed the apple core sign in the distal portion of the descending colon.
Case Discussion
This sign is typical of colorectal carcinoma, which produces eccentric thickening of the colon wall. Obstruction is a common finding.