1.Cancer may also occur on inner surface of body, such as gastric ulcer, duodenitis, rectitis and so on.
也可发生在身体内表面，如胃溃疡，十二溃疡，直溃疡等等。
2.14例中，13例经手病理证实为十二肿瘤，1例经十二镜诊断为十二。
Of all the 14 cases, 13 cases were duodenal tumor demonstrated by the surgical and histological examination, one case was diagnosed as duodenitis by duodenoscopy.
溃疡，直
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病理证实为十二
