Purpose: Endoscopic dacryocystorhinostomy (EDCR) is advantageous in that it avoids facial scar formation, does not damage the medial canthus ligament, and recovers quickly. The main purpose of EDCR is to establish a fistula large enough to completely expose the lacrimal sac and avoid complications. Accurate location of lacrimal sac and complete opening of lacrimal sac are the keys to successful operation. However, due to the individual differences in the size of the lacrimal sac and the anatomical structure of the nasal cavity, it is difficult to determine the location of the lacrimal sac during the operation. Most patients need to place dilatation tubes after operation, which may lead to some defects. To explore the clinical effects of modified dacryocystorhinostomy using nasal endoscopy through the middle uncinate process approach for the treatment of chronic dacryocystitis and nasolacrimal duct obstruction. Methods: Sixty-nine patients (71 eyes) with chronic dacryocystitis and nasolacrimal duct obstruction underwent modified dacryocystorhinostomy using nasal endoscopy. Modified methods included changes in surgical approach, incision of the anterior wall of the lacrimal sac, and treatment of adherent mucosa. Results: In all 71 eyes, no serious complications occurred. The anatomical success rate was 93.0% (66/71) and the symptomatic success rate was 97.2% (69/71). None of the patients underwent conversion to an open method. Conclusion: Modified dacryocystorhinostomy using nasal endoscopy is advantageous in terms of shorter operation time, accurate dacryocystorhinostomy location, less bleeding, relatively simple operation, no requirement for dilation tube insertion, and better effects than conventional dacryocystorhinostomy using nasal endoscopy. Modified dacryocystorhinostomy is a safer and more effective method to treat chronic dacryocystitis-nasolacrimal duct obstruction.

: Dermoid cyst is a congenital and benign disease with most occur on the head and neck. It is rarely that occur on the nasal tip and nasal septum at same time and rarely repair of using nasal septum mucosa. The authors treated a child with dermoid cyst in the nasal tip and septum. Only the dermoid cyst at the tip of the nose caused the change of appearance. Dermoid cyst of nasal septum did not cause any clinical symptoms. She underwent excision of the dermoid cyst at the tip of the nose and endoscopic surgery for the dermoid cyst in the nasal septum and used the nasal septum mucosa for repair at the same time. After 6 months of recovery, the appearance of the nasal tip recovered well without obvious scar, the nasal septum area recovered well, and the local stoma was unobstructed without recurrence. The authors found that this kind of nasal septal cyst with no clinical symptoms can achieve good therapeutic effect through endoscopic surgery and repair of using nasal septum mucosa, with less damage, rapid recovery, and good prognosis.

Background: Kimura's disease is a rheumatic immune disease and head and neck lymph nodes are often involved. A mass occurring in the nasal forehead is rare. Good prognosis after surgical resection by glucocorticoid therapy is more rare.Case Summary: We report the rare case of a nasal forehead mass in a 45-year-old male patient with Kimura's disease. The patient underwent resection of the mass in October 2018 in a local hospital and the postoperative pathology was unclear. He then underwent a second resection in our department in December 2019 mainly because growth of the mass was affecting his appearance. Postoperative pathology confirmed that the patient had Kimura's disease, and he accepted systemic treatment with prednisone. We followed the patient for 10 months after surgery. He is now recovering well and continues to be closely monitored during follow-up.Conclusion: It is rare that the painless mass in the nasal forehead is diagnosed as a Kimura's disease.After completely resection of the mass and systemic treatment with prednisone, the patient had a good outcome. We provide experience for the treatment of Kimura's disease in nasal forehead.

Implant placement immediately after the lateral approach of the trap door window procedure to create a maxillary sinus lift without bone grafting: a 2-year retrospective evaluation of 47 implants in 33 patients.

An ossifying fibroma (OF) is a type of benign fibroosteoma that rarely involves the sinonasal cavity. Recent developments in endoscopic sinus surgery allow the removal of large benign tumors from the nasal cavity and sinuses. Here, the athors report the case of a 48-year-old female who underwent endoscopic sinus surgery under general anesthesia to completely remove a large OF involving the sphenoid sinus and nasal cavity. No recurrence was noted during the recent 3-year follow-up. Endoscopic resection of OFs is an excellent choice for very experienced surgeons, affording the advantages of direct observation as well as visual enhancement and magnification, thus reducing intra-and postoperative morbidity.