input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** On routine screening, a 62-year-old man is found to have positive fecal occult blood tests. He is asymptomatic, but his father died of large intestinal cancer. Abdominal and rectal exams are normal. A colonoscopy subsequently reveals a polyp in the descending colon but no other abnormalities. Excisional biopsy of the polyp shows 75% tubular architecture. Which of the following is the most likely diagnosis?   (A) Inflammatory polyp   (B) Adenomatous polyp   (C) Hamartomatous polyp   (D) Colorectal cancer
output: ['(B) Adenomatous polyp <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Inflammatory polyp  (B) Adenomatous polyp  (C) Hamartomatous polyp  (D) Colorectal cancer <> possible answers', '  On routine screening, a 62-year-old man is found to have positive fecal occult blood tests. He is asymptomatic, but his father died of large intestinal cancer. Abdominal and rectal exams are normal. A colonoscopy subsequently reveals a polyp in the descending colon but no other abnormalities. Excisional biopsy of the polyp shows 75% tubular architecture. Which of the following is the most likely diagnosis? <> context']