Oscar is so preoccupied by his fear of bacteria and viruses…

Oscar is so preoccupied by his fear of bacteria and viruses that he keeps his car and apartment windows sealed tightly, refuses to allow anyone into his apartment, carries his own silverware whenever he eats away from home, and washes his hands every time he touches something another person has touched. Oscar would most likely be diagnosed with

On a screening colonoscopy, a patient is noted to have sever…

On a screening colonoscopy, a patient is noted to have several diverticuli in the sigmoid colon. He has never had any complaints of constipation, diarrhea, abdominal pain, or rectal bleeding. Which of the following is the best step in the management of this patient?