[Long term follow up of laser surgery under micro-endoscopy for laryngeal carcinoma].

Objective: To observe the long term curative effect for laryngeal carcinoma treated with CO2 laser under micro-endoscopy.

Method: Twenty cases of laryngeal cancer were treated by CO2 laser under micro-endoscopy. All patients were followed up at least 5 (5-8) years by phone, letters or clinical review.

[Clinical study of combined approach of tympanoplasty and mastoidectomy with close technique].

Objective: To improve the surgery results and living quality of patients following the operation of the combined approach of tympanoplasty and mastoidectomy with close technique.

Methods: The clinical data and following-up results of 49 patients treated with combined approach of tympanoplasty and mastoidectomy with close technique and 82 patients treated with open mastoidectomy with tympanoplasty were retrospective analyzed.

Results: In the group treated with combined approach tympanoplasty, all patients got dry ear in 20 days and 31 patients' hearing level enhanced over 15 dB after the operation; but in the group treated with open mastoidectomy with tympanoplasty, only 13 patients got dry ear in 20 days and no patients' hearing level enhance over 15 dB after the operation.

[Surgical approaches to the skull base neoplasms].

Objective: To discuss the best surgical approach to the skull base neoplasms.

Methods: Retrospective analysis the 79 skull base neoplasms cases treated with surgical resection in Qilu hospital of Shandong university from 1992 to 2002. Eleven surgical approaches including midfacial degloving, frontal coronal discission, nasal eversion, maxillary swing, partial maxillary resection, total resection of orbit, mandibular swing, combination of front, temple, preauricular, post aureum, neck, and transoral approaches were used to resect the tumor which involved fossae pterygopalatine, paranasal sinuses, nasopharynx, antero, meso and posterobasilar region, lobi frontalis and lobi temporalis of cerebrum.

[Clinical application of the combined presigmoid supra-infratentorial approach].

Objective: To explore the surgical approach to the lesions of the cerebellopontine angle and the petroclival region.

Method: Nine cases of the cerebellopontine angle or petroclival large tumors and one case of the posterior cerebral thrombotic aneurysm were treated by the combined presigmoid supra-infratentorial approach. The tumors including 3 cases of schwannomas and 6 cases of meningiomas spaned supra-infratentorium in our study.

[Combined frontal-preauricular-cervical approach for resection of huge transcranial lateral skull base tumors].

Objective: To search into the appropriate approach for surgical treatment of the huge lateral skull base tumors.

Methods: The combined frontal-preauricular-cervical approach was used in two cases with huge transcranial lateral skull base tumors occupying the parapharngeal space, infratemporal fossa and middle cranial fossa. To acquire a wide surgical exposure, the flaps of orbital-zygomatic bone and the skull bone were removed, and then the mandibula was dislocated inferiorly.