Spontaneous regression of cancer is rare, and rarer still in colorectal cancer. We present a report of two cases of spontaneous regression of histologically proven proximal colonic cancers described in detail, alongside endoscopic, histological, and radiological images. We discussed the potential mechanisms by reviewing previous literature.
Keywords: cancer colon; cancer immunotherapy; colorectal cancer; histology; spontaneous regression of cancer.
Copyright © 2023, Shuttleworth et al.