Cancer may also occur on inner surface of body, such as gastric ulcer, duodenitis, rectitis and so on.
也可身体内表面,如胃溃疡,十二指肠溃疡,直肠溃疡。
Cancer may also occur on inner surface of body, such as gastric ulcer, duodenitis, rectitis and so on.
也可身体内表面,如胃溃疡,十二指肠溃疡,直肠溃疡。
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