My 78-year-old father experiences frequent constipation, sometimes with rectal bleeding, and loss of appetite. These seem like signs of colon cancer. Can an ultrasound detect it? (Tuan, Vinh Long)
Nearly a year after having a rectal tumor removed, 26-year-old Toan still experienced mild burning pain. Doctors discovered remnants of the benign tumor, which could potentially progress to gastrointestinal cancer.
