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1. The patient underwent omentoureteroplasty to treat his chronic constipation.
患者接受了肠系膜静脉成形术来治疗他的慢性便秘。
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2. During the operation, the surgeon performed an omentoureteroplasty to improve the patient's blood flow.
在手术中，外科医生执行了肠系膜静脉成形术以改善患者的血流。
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3. This procedure is often used for patients with severe abdominal pain due to a hernia or tumor invading the omentum and causing compression of the inferior vena cava.
这种程序通常用于患有严重腹痛的患者，因为疝或肿瘤侵犯到肠系膜并导致下腔静脉受压。