Hello, my mother has a tumor in her rectum, 6 cm from the anus. The doctor advised her to take a dose of chemotherapy. When she took the first dose, she had an allergic reaction to it, and the epiglottis swelled and the pharynx swelled from the inside. She felt suffocated and unable to breathe. She remained in this condition for 10 days. After two days, we went to the doctor and he told her that Do not take a dose of chemotherapy and leave it on radiation only for 6 weeks to shrink the tumor. After that, an operation is performed to remove it. My mother is 63 years old and also has heart muscle disease. What do you advise me? Is it good for her? I am from Iraq, Baghdad.