1. for adnexectomy, took the method of abscising the tubal isthmus and ovarian ligament and looping ligature the infundibulopelvic ligament twice. 附件切除者，先切断输卵管峡部及卵巢韧带，套扎两次骨盆漏斗韧带后切除法。
2. Objective To probe into the clinical manifestation, diagnosis, as well as treatment of pregnancy on the cicatrix of a previous cesarean section at the uterine isthmus in the first trimester. 目的探讨子宫峡部剖宫产切口处早期妊娠的临床表现、诊断及治疗。
3. Methods All 96 patients with nodule were operated by resection of only thyroid leave and its isthmus. 方法总结96例甲状腺结节患者行一侧腺叶加峡部切除所采取的术式。
4. A city of southeast Mexico east of the Isthmus of Tehuantepec. It was founded in the16th century near the site of an Olmec settlement. Population, 158, 216. 比亚埃尔莫萨墨西哥东南的一城市，位于特万特佩克地峡东部。是在16世纪奥尔梅克聚居地附近建成的。人口158，216。
5. Yet John Underhill of Edinburgh University has found evidence that the isthmus is full of landslide rubble, which could have tumbled into a narrow sea channel during an earthquake. 然而，爱丁堡大学的约翰
