而且，口腔癌的发病率在40岁以后就上升，你的牙医会查看症状，比如不寻常的肿痛和溃疡，还有无痛性病变。

Plus, oral cancer is more common after 40; your dentist will look for symptoms, such as unusual swelling or sores, as well as painless lesions.

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本文对42例无痛性溃疡合并上消化道出血患者进行分析。

We analyse 42 patients with analgesic ulcer followed by hemorrhage of upper digestive tract.

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结果表明：无痛性溃疡出血占溃疡病出血的31.34%，临床上并非少见；治疗效果较文献报道为佳。

The results show that the patients with analgesic ulcer account for 31.34% of the patients with hemorrhage caused by digestive ulcer and are not uncommon clinically.

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