Image 2. Gross image of the colorectal tumor. Described as an “apple core” or “napkin ring” lesion, which is granular in appearance, raised (exophytic), or heaped edges with ulceration

From

Adenocarcinoma of the Right Hepatic Flexure: A Rare Case Presentation

Fahed Al-Soud, Valentina Grekos, Rishbha Dua, Sharani Jayaratne, Fahreen Lalani, George Michel, Karthik Mohan

American Journal of Medical Case Reports. 2022, 10(12), 300-303 doi:10.12691/ajmcr-10-12-1