95% cases of otitis mastoid were sucessfully treated by the reservation and surgery and the rest 5% cases with this were treated by many different methods aiming to management of the hollows of the radical surgery of mastoid bone according to the cause or individuals. The recovering of the partly poor epithelization in the surgical hollow reported effectively. 13 patients received a surgery in the Central Military Hospital 108 during 1987-1996 were studied. The indicators of age, gender, symptoms before receiving operation and status of the surgical hollow were used to classify the result
Mastoid ; Petrous Bone ; surgery

Cerebrospinal Fluid Otorrhea ; surgery ; Craniotomy ; Encephalocele ; Humans ; Mastoid ; surgery

Exposure to intense noise has been identified as a potential risk in the development of hearing impairment. Social concern about excessive noise is increasing and this also extends to the operating room. A noise level study was performed in the operating room during mastoidectomy with a sound level meter and it was analyzed by a sound-analyzing program. The drilling instruments used included the Stryker, Midas, M.P.S. and Med-Next. The operator was exposed to sound levels from 69 to 83 dBA. The loudest drilling instrument was the Midas and it produced an average sound level of 83 dBA to the operator. The mean exposure time was 41 minutes during mastoidectomy. This is below the occupational noise-level regulations in Korea. However, considering that individual susceptibility to noise varies and that the otologic surgeon is repeatedly exposed to prolonged drilling noise, ear protection is recommended for the operators of high-speed drilling instruments.
Chronic Disease ; Human ; Mastoid/surgery* ; Noise*/adverse effects ; Otitis Media/surgery ; Otolaryngology/instrumentation*

OBJECTIVE: To investigate the new method of modified skin flap of external canal in auditory canal shaping to enlarge at radical mastoidectomy in endaural incision. METHOD: From 1999 to 2009, 412 patients with 428 ears in operation were randomly divided into two groups. Patients underwent open mastoidectomy and some patients were performed concurrent tympanoplasty. A group (control group)were operated in traditional skin flap of external canal, B group is modified group. Bleed and effusion from the wound surface, the time of dry ear and the change of diameter of extermal acoustic meatus after one year were observed after the surgeries and deal the results with SPSS. RESULT: The difference had statistical significance in bleed and effusion from the wound surface, the time of dry ear and the shrink of external acoustic meatus in 12 months among two groups. CONCLUSION Modified skin flap of external canal in auditory canal shaping to enlarge can help to make a no-wound dehiscence by wiping out the raw surface of external acoustic meatus. It is better than traditional skin flap of external canal.
Aged ; Ear Canal ; surgery ; Humans ; Mastoid ; surgery ; Postoperative Complications ; Semicircular Canals ; Surgical Flaps ; transplantation ; Tympanoplasty ; methods

Adolescent ; Adult ; Female ; Hearing ; Humans ; Male ; Mastoid ; surgery ; Middle Aged ; Tympanoplasty ; Young Adult

Aneurysmal bone cyst of mastoid bone is seldom, here one case was reported. The mastoid bone of the patient presented with a baloon-like swelling full of non-coagulated blood and serous-hemorrhagic fluid. CT scan demonstrated a large expansile destructive mass located in left mastoid bone region with the thin or absent cortical bone. The MRI demonstrated T2-weighted images and clear boudary from surrounding tissue. Pathologic reported that the mastoid bone was repalcement with lacunar divided by fibro-tissue, containing numerous hemosiderin, giant cells and inflammatory cells. A surgery was performed and the patient was cured.
Bone Cysts, Aneurysmal ; diagnosis ; pathology ; surgery ; Humans ; Magnetic Resonance Imaging ; Mastoid ; pathology ; Tomography, X-Ray Computed

Pneumolabyrinth or pneumocochlea is an uncommon condition in which the vestibule or cochlea is filled with air. Although there have been several reports about pneumolabyrinth after stapes surgery, it is rarely found in temporal bone fractures. The presence of air inside the inner ear is a definite proof of a pathological connection between the inner ear and the air-filled mastoid or middle ear cavities. We encountered a rare case of a 45-years-old male with a pneumolabyrinth that resulted from a blunt head trauma. A pneumolabyrinth was resolved spontaneously.
Cochlea ; Craniocerebral Trauma ; Ear, Inner ; Ear, Middle ; Fractures, Closed ; Humans ; Male ; Mastoid ; Stapes Surgery ; Temporal Bone*

Adult ; Ear Canal ; Female ; Hearing Loss, Conductive ; surgery ; Humans ; Male ; Mastoid ; surgery ; Middle Aged ; Postoperative Period ; Tympanoplasty

Posterior tympanotomy is a procedure performed to access the posterior mesotympanum through a mastoid exposure while preserving the posterior external auditory canal wall. It is dangereous to drill the the site of procedure, as it is surrounded by incuidal fossa superiorly, facial nerve posteriomedially, and chorda tympani nerve anterolaterally, and forms a very narrow pathway. There is always a risk of surgical trauma involving important surgical structures, especially facial nerve and chorda tympani nerve. The development of image-guided surgery (IGS) has significantly improved the performance of many surgical procedures by aiding the identification of surgical landmarks, improving surgical outcomes, rendering the procedure safer and more efficient, especially for beginner otologic surgery, in revision operations, in cases of massive bleeding and tumor of complex anatomy. To see how IGS could help otologic surgeons to identify fine, important structures during posterior tympanotomy, we report a case of posterior tympanotomy in chronic otitis media, which was done using the image-guided surgical technique.
Chorda Tympani Nerve ; Ear Canal ; Facial Nerve ; General Surgery ; Hemorrhage ; Mastoid ; Otitis Media* ; Otitis* ; Surgery, Computer-Assisted ; Wounds and Injuries

OBJECTIVE: To evaluate the value of intact canal wall mastoidectomy and tympanoplasty in treating patients with cholesteatoma of the middle ear and mastoid. METHOD: Fifty-seven patients underwent intact canal wall mastoidectomy and tympanoplasty. RESULT: In all cases who had been followed up for 1-8 years, 5 ears were infected, 2 patients needed second operation, and 3 ears suffered from cholesteatoma recurrence. Tympanic membrane of 29 ears kept integrity although with pocket retraction to some extent. Extrusion of the prosthesis occurred in 2 cases. The postoperative audiometric measurement (the average hearing threshold at 0.5, 1.0, 2.0 kHz HL) was improved by more than 10 dB HL in 39 ears (72.2%), the mean air bone gap (ABG) of 29 ears was reduced to less than 20 dB HL. CONCLUSION Intact canal wall technique could remain anatomical structure and improve hearing effectually in treating the patients with cholesteatoma in the middle ear and mastoid.
Adolescent ; Adult ; Child ; Cholesteatoma, Middle Ear ; surgery ; Female ; Humans ; Male ; Mastoid ; surgery ; Middle Aged ; Tympanoplasty ; methods ; Young Adult