<s>[INST] Hi doctor, I have been having burning type gnawing pain behind my sternum since last one year. I am on Esomeprazole 40 mg since last six months, which ease my symptoms. Two days ago, my GP advised me to get an upper GI endoscopy. During the endoscopy, they found one small sessile polyp on GE junction and they took a biopsy sample. I am much worried that it may be malignant. Can you describe what this sessile polyp is? How much chance that it may be malignant? Biopsy report is still awaited. [/INST] Hi. For further information consult a medical oncologist online --> </s>