Conversation: The conversation between human and AI assistant.
[|Human|] My 91 year old father was recently diagnosed with vocal chord cancer. He started radiation treatments, then after 4 treatments he got shingles. Since then he cannot keep any food or drink down. He throws everything up. He was admitted into the hospital for mild dehydration and stayed for 2 days and was just released last night . is vomiting a side effect of the cancer or the radiation? Also, any suggestions on what to do to keep food or drink in him?
[|AI|]  Hi, Thanks for writing in. Vomiting is a common side effect of cancer treatment. It is possible that he received radiation therapy to his neck region and this caused fibrosis of the thoracic part of esophagus which is located behind the vocal cord. The esophageal radiation fibrosis might cause strictures which cause discomfort in eating and Chat Doctor.  The patient might also have pain and difficulty in swallowing. It is suggested that an investigation like barium swallow is done to know if the food pipe has developed any stricture. Then attempts might be made to widen the stricture area and allow the passage of food and liquids. To keep him HY