0 a small, simple, tube-shaped water animal -- 水螅
1 a small mass of cells that grows in the body, and is usually not harmful -- 息肉
Once adenomatous polyps are detected, the person exits the model.
When test results were positive, a follow-up colonoscopy was assumed regardless of the polyp size.
Her past medical history included hypercholesterolaemia, hypothyroidism (partial thyroidectomy), and surgery for a benign ovarian tumor and uterine polyps some 38 years ago.
This study particularly addressed this issue, using a disease model that captured the uncertainty associated with polyp dwell time.
The length of time in surveillance and the frequency of tests depended upon the size and type of polyp (38).
As demonstrated by sensitivity analyses, the dynamics of polyp-cancer transition have significant effect upon the magnitude of the cost:effectiveness ratios.
At-risk relatives exit the model when adenomatous polyps are identified.
Persons who were found to have polyps underwent transition to a surveillance group after polyps were removed.
