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1.The patient's mesogastric resection was complicated by a large amount of blood loss.
患者的胃切除术由于大量出血而变得复杂。
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2. He underwent a gastrectomy to treat his stomach cancer.
他接受了胃切除术来治疗他的胃癌。
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3.The surgery involved the removal of the upper part of the esophagus and the lower part of the stomach.
手术涉及切除上食管和下胃的部分。