1.   He has also been operated on to remove cancerous polyps, and has had prostate surgery.

2.   He went for a colonoscopy the next week, and they removed two cancerous polyps.

3.   The patients had already had at least one potentially cancerous polyp removed.

4.   Lehman won the PGA Colonial National Invitational three weeks ago after recovering from successful surgery to remove cancerous polyps from his colon.