Which of the following is NOT a type of non-neoplastic colonic polyp?

Colorectal adenomas are classified as neoplastic polyps, meaning they have the potential to undergo malignant transformation and develop into colorectal cancer. This distinction is crucial in understanding polyp types, especially in a clinical context where surveillance and management strategies can differ significantly.

In contrast, juvenile polyps, hamartomatous polyps, and inflammatory polyps are all considered non-neoplastic. Juvenile polyps commonly occur in children and are generally benign, often presenting as isolated lesions in the rectum or colon. Hamartomatous polyps are characterized by an abnormal mixture of cell types and tissue, which does not increase the risk of cancer. Inflammatory polyps usually arise as complications of chronic inflammatory conditions, such as ulcerative colitis or diverticulitis, and also do not carry a risk for malignant transformation.

Understanding this classification helps guide appropriate clinical assessment and management of patients with colonic polyps during routine examinations or surveillance programs.