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目的旨在以颏下动脉和颏下静脉为血管蒂的颏下岛状瓣（SMIF）整复口腔缺损。方法7例口腔癌肿患者接受了口腔肿瘤切除加同侧颈淋巴清扫术，并同期行SMIF整复口腔缺损，其中1例施行了根治性颈清扫术，1例施行了保留颈外静脉的改良颈清扫术，其余5例施行了保留颈内静脉的改良颈清扫术。结果除行根治性颈清者外，6例行改良颈清者的SMIF均成活。结论SMIF血供恒定，成活可靠；其最大面积可达7cmX16cm，且活动度大，可达到距供区较远的部位，可广泛用于口腔颌面缺损的整复；因颈内外静脉系统是颏下静脉的回流通路，著作颈淋巴清扫术应保留两颈静脉系统之一及其与颠下静脉连通的中介静脉方能确保SMIF的成活。
The purpose is to reconstruct oral defects using the submental island flap (SMIF), which has a pedunculated submental artery and submental vein. Methods 7 cases of oral cancer patients underwent oral tumor resection plus ipsilateral neck dissection and SMIF reconstructive oral defect over the same period. One case had a radical neck dissection and one case had an improvement of preserving the external jugular vein Neck dissection, and the remaining five cases of the implementation of the modified internal jugular vein modified neck dissection. Results In addition to radical neck dissection, six cases of SMIF survivors were improved. Conclusion The SMIF blood supply is constant and reliable; its maximum area is up to 7cm × 16cm, and its mobility is large. It can reach farther away from the donor site and can be widely used for the reconstruction of oral and maxillofacial defects. Because the internal and external venous system of the neck is chin The reflux path of the inferior vena cava, the book of cervical lymphadenectomy, should retain one of the two jugular venous systems and its intervening veins connected with the inferior vena cava to ensure the survival of SMIF.