Effect of iontophoresis anesthesia of the tympanic membrane on middle ear pressure / 대한이비인후과학회지

BACKGROUND AND OBJECTIVES:The presence of encapsulated nerve corpuscles that is involved in regulating middle ear pressure has been noticed in previous studies. Based on those findings, how the sensory receptors in the tympanic membrane and tubal function are related was tested in the present study. MATERIALS AND METHODS: Tubal function was tested by 9 step test using Grason-Stadler institute(GSI) Middle ear analyzer II Eustachian tube function(ETF) test mode. Tubal function was recorded as compliance of the tympanic membrane on an otoadmittance meter. To anesthetize the sensory receptors in the tympanic membrane, iontophoresis was applied to the twenty right ears of the twenty subjects. RESULTS: Peak pressure difference in the middle ear was reduced after the tympanic membrane (TM) anesthesia, which indicates that the tubal function has decreased due to pressure change in the sensory receptors in the tympanic membrane. CONCLUSION: The findings of the present study suggest that there may be a neural connection between the sensory receptors in the tympanic membrane and the tubal muscle, as the eustachian tube function changed following the TM anesthesia.

Cholesteatoma of the Maxillary Sinus / 대한이비인후과학회지

Cholesteatoma of the paranasal sinuses is a rare entity: It is most often located in the frontal sinus and less commonly in the ethmoids and maxillary sinuses. The cholesteatomatous sinus has its otherwise normal respiratory epithelium lining partially or totally replaced by a hyperkeratotic squamous epithelium which in turn leads to the formation of lamellar sheets of keratin. Cholesteatoma in the sinus behaves as it does in the ear. The exact etiology of cholesteatoma is not known, and the diagnosis of cholesteatoma is difficult, largely due to lack of awareness. We present a 30-year-old man with cholesteatoma of the maxillary sinus and a left facial pain as his chief complaint. PNS CT revealed a homogenous soft tissue density containing calcific mass within the left maxillary sinus. Antral lesions was removed with a Caldwell-Luc approach with wide antrostomy. Histologic examination revealed cholesteatoma. We report this case of cholesteatoma of makillary sinus with a review of literature.

A Gigantic Osteoma of the Mandible Accompanied with Dyslalia / 대한이비인후과학회지

Osteoma of the mandible is a benign neoplasm of well defferentiated compact or cancellous bone that increase in size by continuous osseous growth and is extremely rare. Osteomas are found almost exclusively at the skull and at the facial and jaw bones. The most common location in the jaws is posterior lingual surface of the mandible. Possible pathogenesis is traumatic, congenital, inflammatory, or endocrine causes. Osteomas are usually asymptomatic unless their large size results in facial asymmetry and difficulty in mastication and swallowing. A CT scan was helpful to delineate the size of the lesion and the relationship of the tumor to important adjacent structures. Surgical excision is treatment of choice. Recently, we experienced a rare case of gigantic osteoma of the mandible ramus associated with dyslalia, which was surgically treated. This case is presented in this report with literature survey.

Clinical Analysis of Post-Operative Hemorrhage after Tonsillectomy / 대한이비인후과학회지

BACKGROUND AND OBJECTIVES: Post-tonsillectomy hemorrhage is one of the most common complication and responsible for the majority of post-operative fatalities. Despite continuous efforts to eliminate this problem, it still remains a major risk. MATERIAL AND METHOD: The medical records of 1,510 tonsillectomized patients were reviewed for the frequency of post-tonsillectomy hemorrhage in relation to sex and age of the patients, seasons of year, operators as well as for the site, the type, and the control method of hemorrhage. RESULTS: Post-tonsillectomy hemorrhage was common in males with the incidence of 3.9%, of which the primary and secondary types accounted for 11.9% and 88.1%, respectively. The hemorrhage most frequently occurred in the left. There was no statistical significance associated with the seasons of year and with operators. Most of hemorrhages were controlled with electrocautery and conservative treatment. CONCLUSION: Although there are no obvious preventable means of post-tonsillectomy hemorrhage, complete bleeding control during operation and post-operative education are most important.