1.Development of the mucociliary system in the murine eustachian tubeand middle ear.
Keehyun PARK ; Ho Ki LEE ; Myung Hyun CHUNG ; Young Myoung KIM ; Jae Young KIM ; David LIM
Korean Journal of Otolaryngology - Head and Neck Surgery 1992;35(2):262-270
No abstract available.
Ear, Middle*
2.A case of high jugular bulb confirmed in middle ear surgery.
Dai Hoon CHO ; Deuk Moon MA ; Sung Jun KIM ; Soon Kwang IM
Korean Journal of Otolaryngology - Head and Neck Surgery 1992;35(5):732-736
No abstract available.
Ear, Middle*
3.Clinical ecaluation of middle ear surgery.
Korean Journal of Otolaryngology - Head and Neck Surgery 1991;34(3):432-438
No abstract available.
Ear, Middle*
4.A case of adenomatous tumor of the middle ear.
Joon KWON ; Joong Wha KOH ; Soon Il PARK ; Soon Hee JEONG ; Ki Yeun KIM ; Seog In PAIK
Korean Journal of Otolaryngology - Head and Neck Surgery 1991;34(6):1322-1327
No abstract available.
Ear, Middle*
5.A clinical study on the results of middle ear surgery.
In Young KWAK ; Sung Kun KIM ; Kyung Rae KIM ; Chul Won PARK ; Kyung Sung AHN
Korean Journal of Otolaryngology - Head and Neck Surgery 1993;36(6):1140-1147
No abstract available.
Ear, Middle*
6.Immunohistochemical demonstration of Langerhans' cells in middle ear cholesteatoma.
Keehyun PARK ; Myung Hyun CHUNG ; Hee Nam KIM ; Seung Chul LEE
Korean Journal of Otolaryngology - Head and Neck Surgery 1992;35(6):840-846
No abstract available.
Cholesteatoma, Middle Ear*
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Ear, Middle*
8.Classification and stages of middle ear cholesteatoma at the Southern Philippines Medical Center using the European Academy of Otology and Neurotology / Japan Otological Society (EAONO / JOS) system
Dominador B. Toral ; Chris Robinson D. Laganao
Philippine Journal of Otolaryngology Head and Neck Surgery 2021;36(1):24-27
Objective:
To determine the stage of middle ear cholesteatoma of patients who underwent middle ear surgery at the Southern Philippines Medical Center from January to December 2019, based on European Academy of Otology and Neurotology / Japan Otological Society (EAONO/JOS) system.
Methods:
Design: Case Series.
Setting: Tertiary Government Hospital.
Participants: A total of 42 charts were included in the study.
Results:
Of the 42 cases evaluated, congenital cholesteatoma was seen in 4 while acquired cholesteatoma was noted in 38, (further subdivided into 34 retraction pocket cholesteatoma and 4 non-retraction pocket/traumatic cholesteatoma). A majority (57%) had Stage II cholesteatoma (mass occupying at least two sub-sites in the middle ear) at the time of surgery. Eight (19%) had stage I cholesteatoma (confined to one sub-site), five (12%) had stage III cholesteatoma evidenced by extracranial complications such as subperiosteal abscess and erosion of the semi[1]circular canals. Stage IV cholesteatoma was seen in 5 (12%) presenting with intracranial abscess. Canal wall down mastoidectomy was the most common surgical approach performed. The sinus tympani (S2 ) was the most commonly involved difficult to access site across all classifications of middle ear cholesteatoma (60%).
Conclusion
Our study provided an initial profile of the stages and severity of middle ear cholesteatoma in our institution based on actual surgical approaches. Such a profile can be the nidus for a database that can help us to understand disease prevalence and compare local surgical practices with those in the international community.
Cholesteatoma
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Cholesteatoma
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Ear, Middle
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Cholesteatoma, Middle Ear
9.Petrous Apex Pneumatization on Computed Tomography.
Ki Young PARK ; Kwang Sik HAN ; Myoung Geun PARK ; Jong Sun LEE ; Young Min PARK ; Ik YANG
Korean Journal of Otolaryngology - Head and Neck Surgery 2000;43(6):588-592
BACKGROUND AND OBJECTIVES: The mastoid air cell system has been recognized as an important contributor to the function of middle ear ventilation. And, mastoid pneumatization is thought to be correlated with the petrous apex pneumatization. We attempted a comparative analysis of petrous apex pneumatization and the mastoid portion by using target imaging CT. MATERIALS AND MEDTHOD: Pneumatization of the petrous apex v as investigated in 100 subjects without middle ear disease by computer-assisted digital processing of CT images of' the hone. RESULTS: The rate of pneumatization of the petrous apex in all subjects was 22% (44/200 ears), and there was no difference in the degree of pneumatization between the left and the right ears or between sexes. In 44 ears that showed pneumatization of the petrous apex, a higher degree of pneumatization was found in larger mastoid cavities, suggesting a correlation between pneumatization of the petrous apex and the pneumatized air cells in other parts of the temporal bone. Pneumatization in all parts of the petrous apex was found in about 5% (2/44 ears), and pneumatization in some parts of the petrous apex eas about 95% (42/44 ears). In the latter cases, there was no difference in the degree of pneumatization between the lower portions of the CT slices and the higher ones. SUMMARY: These results indicate that the effects of pneumatization of the petrous apex must be taken into consideration in studies measuring the gas composition and volume of the middle ear, and in temporal bone peumatization which acts as a pressure buffer in middle ear diseases.
Ear
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Ear, Middle
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Mastoid
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Middle Ear Ventilation
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Temporal Bone