1.Irritated Subtype of Seborrheic Keratosis in the External Auditory Canal.
June Kyu PARK ; Kyung Sik KIM ; Seung Hong KIM ; Jun CHOI ; Jeong Yeol YANG ; Jeong Ju LEE
Archives of Plastic Surgery 2017;44(6):570-572
No abstract available.
Ear Canal*
;
Keratosis, Seborrheic*
2.Ceruminous Adenoma Mimicking Otofuruncle in the External Auditory Canal.
Sang Woo KIM ; Jeong Hwan CHOI
Korean Journal of Otolaryngology - Head and Neck Surgery 2011;54(7):501-503
Tumor arising from the ceruminous glands of the external ear canal are very rare and can present a diagnostic dilemma because of their varied clinical and histologic manifestations. We experienced an external auditory canal mass that looked like otofuruncle but was identified as a ceruminous adenoma. A wide local excision with clear margins was made to prevent recurrences. Herein, we report this case and discuss the importance of wide excision. To our knowledge, only one pediatric case has been reported, making this case the second published report of this tumor in childhood.
Adenoma
;
Ear Canal
;
Recurrence
3.A Case of Cartilaginous Choristoma of External Auditory Canal.
Jung Mee PARK ; Hyo Min KIM ; Seong Cheon BAE ; Shi Nae PARK
Korean Journal of Otolaryngology - Head and Neck Surgery 2013;56(3):166-168
Cartilaginous choristoma of bony external auditory canal is very rare. Appearing as a horny sha-ped hard mass, cartilaginous choristoma can be found in the medial portion of anterior wall of external auditory canal. Histologically, it consists of adult-type hyaline cartilage without neoplastic features. If cartilaginous choristoma shows growing tendency or ear symptoms, surgical excision would be the treatment of choice. Here, we report a case of cartilaginous choristoma that occurred in the external auditory canal in an 8-year-old boy.
Cartilage
;
Choristoma
;
Ear
;
Ear Canal
;
Hyaline Cartilage
4.A Case of Squamous Papilloma in the Middle Ear, External Auditory Canal, and Infratemporal Fossa.
Byoung Moon YOON ; Sung Won PARK ; Kyung Sik MIN ; Ki Soo HONG ; Mee Yon CHO ; Seok Woo YANG
Korean Journal of Otolaryngology - Head and Neck Surgery 1999;42(7):911-915
Papilloma is a benign neoplasm confined almost exclusively to the sinonasal tract. And rare cases involving middle ear or external auditory canal, usually extended or contaminated from nasal cavity have been reported. We recently experienced a case of squamous papilloma involving middle ear, external auditory canal, and infratemporal fossa without any evidence of involving sinonasal tract. We present a review of literature and discuss the pathophysiology of the papilloma.
Ear Canal*
;
Ear, Middle*
;
Nasal Cavity
;
Papilloma*
5.Anterior tympanic plate fracture following extraction of the lower molar.
Yeon Ho KIM ; Moon Key KIM ; Sang Hoon KANG
Journal of the Korean Association of Oral and Maxillofacial Surgeons 2016;42(1):51-54
The present case report describes an external auditory canal injury following extraction of the lower molar. The external auditory canal was torn in the same fashion that occurs in an anterior tympanic plate fracture. This case demonstrates one of the rare complications associated with dental extractions.
Ear Canal
;
Molar*
;
Tooth Extraction
6.Removal of the spherical foreign body in the external auditory canal using cyanoarylate type adhesive.
Korean Journal of Otolaryngology - Head and Neck Surgery 1991;34(2):344-346
No abstract available.
Adhesives*
;
Ear Canal*
;
Foreign Bodies*
7.Five cases of squamous cell carcinoma in external auditory canal.
Cheol Min AHN ; Young Hoon CHUN ; Duk Hee CHUNG ; Jong Ouck CHOI
Korean Journal of Otolaryngology - Head and Neck Surgery 1992;35(4):500-504
No abstract available.
Carcinoma, Squamous Cell*
;
Ear Canal*
8.The Effect on Acoustic Characteristics of Surgical Modification of the External Ear.
Korean Journal of Otolaryngology - Head and Neck Surgery 1999;42(12):1501-1504
BACKGROUND AND OBJECTIVES: The peak resonance corresponds to the fundamental frequency whose wavelength is approxi-mately four times the canal length and is between 2 and 3 kHz in a normal ear canal. The possibility that creation of an open cavity mastoid alters the acoustical characteristics of the external ear has been suggested. The aim of this study was to ascertain the acoustical changes in the external auditory canal occasioned by the open cavity mastoidectomy, and compare it with the mastoid obliteration. MATERIALS AND METHODS: We measured the external ear resonance (EER) characteristics in 40 normal ears, 20 ears with open cavity mastoid and 40 ears with obliterated mastoids. The EER characteristics were measured using 6500 hearing aid test system. RESULTS: The means of the peak resonant frequency and the peak amplitude at open cavity mastoids (2350 Hz, 18.5 dB) showed significant differences (p<0.1) when compared with those at normal mastoids. However, the means at obliterated mastoids (2850 Hz, 20.5 dB) recovered to the near normal state. CONCLUSION: While the open cavity mastoidectomy can affect the resonance frequency, the mastoid obliteration may help anatomical reconstruction as well as acoustical recovery.
Acoustics*
;
Ear
;
Ear Canal
;
Ear, External*
;
Hearing Aids
;
Mastoid
9.A Case of Jugular Bulb Injury by the External Ear Foreign Body.
Chan Hum PARK ; Sang Hoon SO ; Hyung Jong KIM ; Hyun Joon LIM
Korean Journal of Otolaryngology - Head and Neck Surgery 1999;42(9):1183-1185
Foreign bodies of the external ear have been frequently encountered in the otolaryngological field. Recently, we experienced an interesting case of jugular bulb injury penetrating through the external auditory canal by an ear foreign body (woodswab), which was removed via mastoidectomy and facial recess approach. Immediately after removal of the foreign body, massive bleeding was followed and was controlled by SurgicelR packing and compression. Reporting this case, we suggest that special attention should be paid if the ear foreign body is associated with massive bleeding.
Ear
;
Ear Canal
;
Ear, External*
;
Foreign Bodies*
;
Hemorrhage
10.Electron Microscopic Observation of Experimentally Induced Comedones in Rabbit.
Korean Journal of Dermatology 1987;25(4):492-499
Accurnulation of keratinized cells within the infundibulum of pilosebaceous canal is important in the pathogenesis of acne. Light and electron microscopic study of experimentally induced comedones, from the rabbit's external ear canal, was performed to define the earIy morphologic changes within and around the epithelial lining of the comedones. In light microscopic observation, early comedone was composed of loose cohesive horny cells and late comedone was composed of a mixture of loose and tight cohcsive horny cells. Cohesion between horny cells occured, in eIectron microscopic study, in two different ways: initially, by the persistence of desmosomes; later, and to a lesser extent, by tight junctions, which tightly bound the horny cells together. Multiple lipid droplets within the horny ceIls and a gradual decrease in the numbrane coating granules were observed.
Acne Vulgaris
;
Desmosomes
;
Ear Canal
;
Tight Junctions