My father, who is 79 yrs old and has a quite healthy life, has recently developed some difficulties in swallowing food for around 5-6 months. We had consulted Doctor in a well known Hospital in Delhi and we got endoscopy done which showed a thickening of esophagus wall and the Doctor advised endoscopic biopsy under anesthesia, which could not be completed by the concerned department as the biopsy was not possible from that angle. Now the Doctor had given an option of PET scanning or DL endoscopy and BPOPSY(GA). Meanwhile he prescribed Romilast, which did helped my father while eating food. However, we are not longer sure whether we should go ahead with it, as so far it has been an expensive wild goose chase without any conclusive outcome. We took a second opinion from Lok Nayak Hospital, where a Barium swallow test was done and the report says (R) pyriform sinus(l) lat. aspect of esophagus likely due to damage The Doctor advised that there is nothing to be worried about and it was an age related problem where the esophagus loses its flexibility and becomes stiff and we can continue with the Romilast tabs. I am confused as to what is to be done and Dad is also worried with anxiety as we recently lost my mother with nasopharyingeal carcinoma after a seven year battle with the disease and the sufferings of my mom is still quite fresh in our minds. However, he does not want any treatment, if it turns out to be cancer. Please advise as to which course of action will be better