Related Experiment Video
Updated: Feb 6, 2026

Isolated Hepatic Perfusion as a Treatment for Liver Metastases of Uveal Melanoma
Published on: January 25, 2015
Malignant Melanoma Metastasizes to Colonic Polyp
Muhammad Azharuddin1, Ahmad Sharayah1, Syed H Abbas2
1Internal Medicine, Monmouth Medical Center, Long Branch, USA.
Abstract:
Malignant tumors metastasizing to the colon has been observed rarely. Gastrointestinal metastasis can present as benign, unpigmented polyps endoscopically. Most patients do not display any symptoms, and if symptomatic, they usually present with gastrointestinal bleeding. For patients with the history of melanoma, histopathology of polyp can change or alter the course of management. This is a case of a 74-year-old male diagnosed with recurrent melanoma of left ear. Colon cancer screening found blood in his stool. Colonoscopy displayed to have three polyps, one polyp was found to be malignant melanoma. The patient was started on Pembrolizumab, and was tolerating immunotherapy well with no new complaints three months later.
Related Concept Videos
The Colonization of Land
Anatomy of the Intestines
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the...
Ecological Succession
Hormonal Regulation
Pleiotropy
Ecological Disturbance

