Description:
In this series on colon cancer prevention, we would like to show some subtle lesions in colon. Here you see a flat lesion identified by the vessel cut-off sign. After injection of submucosal saline, you could identify the lesion a little bit better. Notice the changes in the surface mucosal pit pattern compared to the normal surrounding area –larger pits compared to small round pits in the surrounding area – this is a IIB flat lesion. This was removed by endoscopic mucosal resection technique using a stiff snare. It is important to grasp the lesion, and once you close the snare, it is also important to release the snare a little bit so as to avoid trapping the underlying muscularis propria. Subsequently, resection was performed and on histology you could notice a sessile serrated adenoma.
Contributed By:
Gottumukkala S. Raju, MD, MD Anderson Cancer Center
Liben Mahometano, MD Anderson Cancer Center
Asif Rashid, MD, PhD, MD Anderson Cancer Center
Patrick Lynch, MD, MD Anderson Cancer Center
