* Evaluation of histological grade and histologically tumour-free margins as predictors of local recurrence in completely excised canine mast cell tumours.
- Completeness of mast cell tumour (MCT) excision is determined by assessment of histologically tumour-free margins (HTFM). The HTFM width necessary to prevent local recurrence (LR), recognized as histologic safety margin (HSM) in human oncology, has not been defined. We hypothesized that HTFM width would correlate with risk for LR and high-grade tumours would require wider HTFM than low-grade tumours. Records of dogs with completely excised MCTs were included. Signalment, two-tier tumour grade, tumour size, HTFM width, recurrence and therapy data was collected. High-grade (n = 39) tumours were more likely to recur than low-grade (n = 51) tumours (35.9% versus 3.9%), P < 0.0001, with no association between HTFM width and LR. Twenty-nine percent of low-grade tumours had HTFM less than 3 mm; none recurred. Narrow (≤3 mm) histologic margins are likely adequate to prevent LR of low-grade tumours. High-grade tumours have significant risk of LR regardless of HTFM width.
=>1.損害の恐れ, 危険, 冒険, リスク, 2.危険にさらす, 3.敢えてする, 被保険者, 被保険物, 危険にさらす,
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Overview of noun risk
The noun risk has 4 senses (first 2 from tagged texts)
1. (4) hazard, jeopardy, peril, risk, endangerment -- (a source of danger; a possibility of
incurring loss or misfortune; "drinking alcohol is a health hazard")
2. (2) risk, peril, danger -- (a venture undertaken without regard to possible loss or injury; "he
saw the rewards but not the risks of crime"; "there was a danger he would do the wrong thing")
3. risk, risk of infection -- (the probability of becoming infected given that exposure to an
infectious agent has occurred)
4. risk, risk of exposure -- (the probability of being exposed to an infectious agent)
Overview of verb risk
The verb risk has 2 senses (first 2 from tagged texts)
1. (8) risk, put on the line, lay on the line -- (expose to a chance of loss or damage; "We risked
losing a lot of money in this venture"; "Why risk your life?"; "She laid her job on the line when
she told the boss that he was wrong")
2. (2) gamble, chance, risk, hazard, take chances, adventure, run a risk, take a chance -- (take a
risk in the hope of a favorable outcome; "When you buy these stocks you are gambling")
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