目的：探讨改良的外路泪囊鼻腔吻合术式联合泪道置管治疗泪囊黏液囊肿的临床疗效。
方法：对23例（23眼）泪囊黏液囊肿行改良式泪囊鼻腔吻合术，并联合泪道置管，术后行泪道冲洗，并观察泪溢情况。

结果：23例患者，1例术中改为泪囊摘除术，20例完成12个月的追踪观察治疗，1例术后6个月失访，1例12个月时失访。随访1个月，22例患者术后泪囊肿均消失，外观明显改善；随访12个月，20例患者中18例溢泪症状完全消失，所有患者泪道冲洗通畅，仅1例患者因泪溢症状对手术疗效不满意。

结论：改良式外路泪囊鼻腔吻合术联合泪道置管治疗泪囊黏液囊肿，具有良好的临床效果值得推广。

Purpose: To investigate the eficacy of modified external dacrocystorhinostomy (DCR) with intubation in the treatment of lacrimal sac cys.

Methods: Twenty-three lacrimal sac cyst cases (23 eyes) were enrolled and treated with DCR technique and tube intubation. The success was assessed based on lacrimalirrigation and symptomatic relief of epiphora.

Results: Among 23 patients, surgery was intenupted and converted to dacryocystectomy in l case, thus surgery was successfully performed in 22 cases. Among them, 1 case lost follow up at 6 month, 1 case lost follow up at 12 month. At 1 month visit, lacrimal sac cyst disappeared in 22 cases. At 12 month visit, epiphora was completed relieved in 18 out of 20 cases, irrigation indicated no obstruction in all 20 cases.

Conclusions :The modified DCR technique with intubation has satisfactory outcome for lacrimal sac cyst.

目的：探讨医用自交联透明质酸钠凝胶对鼻内窥镜下泪囊鼻腔吻合术(endonasal endoscopic dacryocystorhinostomy，En-DCR)后的影响。方法：将219例单侧慢性泪囊炎(chronic dacryocystitis CD)患者随机分为医用自交联透明质酸钠凝胶组(A组)和对照组(B组)。所有患者行En-DCR。A组将医用自交联透明质酸钠凝胶填充吻合口，B组不做任何处理。随访12个月。比较创面黏膜上皮化、肉芽形成情况、渗血情况及吻合口通畅成功率。结果：A组98例，B组102例。随访2周，A组86例患者鼻腔吻合口黏膜上皮完整，B组77例患者鼻腔吻合口黏膜上皮完整。随访12个月，A组有7例患者存在瘢痕(7.1%)，8例患者出现肉芽肿(8.2%)，而B组有17例患者存在瘢痕(16.7%)，18例患者出现肉芽肿(17.6%)。两组瘢痕形成及出现肉芽肿差异均有统计学意义(P<0.05)。A组的吻合口通畅成功率达到90.8%(89/98)，而B组的成功率为78.4%(80/102)(P<0.05)。B组患者术后渗血情况A组相当(P>0.05)。结论：医用自交联透明质酸钠凝胶填充吻合口可通过促进En-DCR术后吻合口黏膜上皮愈合和降低伤口瘢痕及肉芽肿生成率，提高En-DCR治疗CD的成功率。

Objective: To investigate the effect of medical self-crosslinking sodium hyaluronate gel on endonasal endoscopic dacryocystorhinostomy (En-DCR). Methods: A total of 219 patients with unilateral chronic dacryocystitis (CD) were selected and randomly divided into two groups: medical self-crosslinking sodium hyaluronate gel group (group A) and control group (group B). All patients underwent En-DCR. Group A received medical self-crosslinking sodium hyaluronate gel filling the ostium at the end of En-DCR, whereas group B received no treatment. Patients were followed-up for 12 months. The mucosal epithelialization of the wound, the granulation formation, bleeding, and the success rate of ostial patency were compared in the two groups. Results: Our study included 98 patients in group A and 102 patients in group B. After 2 weeks, the number of absorbable hemostatic patients who had intact mucosal epithelium lining the ostia was 86 in group A and 77 in group B. At 12 months follow up, there were 7 patients with scar (7.1%) and 8 patients with granuloma (8.2%) in group A, compared with 17 patients with scar (16.7%) and 18 patients with granuloma (17.6%) in group B. There were significant differences in scar formation and granuloma between the two groups (P<0.05). The success rate of anastomotic patency reached 90.8% (89/98) in group A whereas the success rate was 78.4% (80/102) in group B (P<0.05). The situation of postoperative bleeding in group B was similar to that in group A (P>0.05). Conclusion: The medical self-crosslinking sodium hyaluronate gel can improve the success rate of En-DCR treatment of CD through promoting the healing of anastomotic mucosa and reducing the rate of wound scar and granuloma formation.