hello sir, my father s reports on endoscopy shows a proliferative growth on the 35cm of the esophagus which has narrowed the lumen. does this indicate cancer .? he also has problem during swallowing and during the past few days there has been a drastic fall in his weight also. please provide me your helpful remedies, I m really very worried for my father. they have sent samples for biospy. please give me your guidelines, I will be ever thank full to u.