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A Case of Merkel Cell Carcinoma of the External Auditory Canal Skin with Annulus and Tympanic Membrane

Cho A, Jang M, Moon IS, Shin SH

Merkel cell carcinoma is an extremely rare neuroendocrine neoplasm of the external auditory canal (EAC) skin, which requires wide excision and adjuvant radiation due to a high recurrence rate. In...
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A Case of Syringocystadenoma Papilliferum of External Auditory Canal

Jang J, Park SY, Park HY, Heo KW

Ceruminous glands are specialized sudoriferous glands located in the external auditory canal (EAC). Tumors originating from these ceruminous glands are rare lesions of EAC; in particular, syringocystadenoma papilliferum (SCAP) is...
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Protrusion of Implant after Surgical Wall Reconstruction due to Temporomandibular Joint Herniation

Koo BM, Baeg MS, Moon SK, Cho HS

Herniation of the temporomandibular joint (TMJ) into the external auditory canal is rare as TMJ and external auditory canal are separated by an anterior bony wall of external auditory canal....
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A Case of Squamous Cell Carcinoma in Situ Occurredin the External Auditory Canal

Hong SJ, Baeg MS, Rhee JH, Cho HS

Primary malignant lesions in the external auditory canal are rare. While squamous cell carcinoma is the most common of these lesions, there are also basal cell carcinoma, malignant melanoma and...
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Primary carcinoid tumor in the external auditory canal

Chung DH, Han GC, Kim NR

A 39-year-old man visited the department of otolaryngology due to an ongoing hearing disturbance that had lasted for 1 year. Temporal bone computed tomography revealed soft tissue density nearly obliterating...
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A Case of Bony Defect of the Anterior External Auditory Canal Wall Causing Ear Fullness

Lee JK, Lee BS, Jang SK, Park SK

A congenital defect of the anterior wall of the external auditory canal (EAC) is known as foramen of Huschke. The tympanic bone is incompletely developed and has a U shape...
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A Case of Solitary Fibrous Tumor in the External Auditory Canal

Shin K, Kang J, Kwon K, An Y

Solitary fibrous tumor (SFT) is a rare benign spindle-cell neoplasm, most often found in the pleura. Recently, it has been reported to appear throughout the body but rarely in head...
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A Case of Cochlear Implantation in a Child with Congenital Aural Atresia and Cochlear and Cochlear Nerve Malformation

Lee CB, Jeong SW, Hong SW

Congenital aural atresia (CAA) is usually accompanied by an anomalous course of facial nerves, which may run over the round window niche toward the promontory in some cases of CAA....
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Clinical Analysis of External Auditory Canal Osteoma

Kim YS, Kang MH, Choi YS, Shin SO, Jung HJ

BACKGROUND AND OBJECTIVES: External auditory canal osteoma is an uncommon benign lesion and represents as unilateral solitary pedunculated mass. The aim of this study is to evaluate the clinical symptoms...
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A Case of Venous Malformation in Temporomandibular Joint Causing Stenosis of External Auditory Canal

Choe S, Lee D, Kang MS, Heo KW

Both neoplasm and infections arising from the external auditory canal (EAC) can involve the temporomandibular joint (TMJ) but rarely the reverse. A benign TMJ mass that presents as an EAC...
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Unusual Tumors Obstructing the External Auditory Canal: Report of Two Cases

Kim CH, Lee HS, Kim SY, Shin JE

Primary tumors arising from the external auditory canal (EAC) are rare. We describe two cases of mass lesions within the EAC causing slowly progressive hearing loss without otorrhea or otalgia....
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A Case of Squamous Cell Carcinoma of the Bilateral External Auditory Canals

Jung DW, Jeong SW

A malignant tumor of the external auditory canal (EAC) is a rare tumor, with a prevalence of between 1 and 6 people per 1 million population. Common symptoms of the...
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Isolated Myxoma in the External Auditory Canal: A Case Report

Park AR, Kim TG, Kim HJ, Cho WH, Kim JH, Jeong MJ, Kim SH, Kim JY, Kim SH, Kang MJ, Lee JH, Bae KE

Myxoma is a benign mesenchymal neoplasm found in the heart, bone, and other soft tissues. However, myxoma of the external auditory canal is extremely rare. Since myxoma of the external...
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Removal of Industrial Cement in the External Auditory Canal Through Three-Dimensional Reconstruction of the Temporal Bone and Transcanal Canaloplasty

Kim MJ, Bae SH, Lee SM, Lee JH

Removing of foreign bodies in the external auditory canal is commonly observed in the otorhinolaryngologic field. Sometimes the size of some materials might change after being embedded in the canal;...
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Prognostic Factors Affecting Surgical Outcomes in Squamous Cell Carcinoma of External Auditory Canal

Nam GS, Moon IS, Kim JH, Kim SH, Choi JY, Son EJ

OBJECTIVES: Carcinomas of the external auditory canal (EAC) are rare, and management remains challenging. Previous studies seeking prognostic factors for EAC cancers included cancers other than carcinomas. In this study,...
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Spontaneous migration of a congenital intratympanic membrane cholesteatoma

Kim TH, Lee KY, Jung DJ

Congenital intratympanic membrane cholesteatoma (ITMC) is a rare type of congenital cholesteatoma located within the tympanic membrane. This lesion tends to increase in size over time. The development of ITMC...
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A Case of Epidermal Cyst Occurred in the Bony External Auditory Canal Misdiagnosed as External Auditory Canal Carcinoma

Lim SH, Koo BM, Park PN, Cho HS

Epidermal cysts are generally benign tumors that usually originate from the skin caused by inflammation of hair cortex and proliferation of epidermal cells within the dermis; however, for these cysts...
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A Case of Ceruminous Adenoma Arising from the External Auditory Canal

Yeo SC, Lee HJ, Kim JY, Kim DW, Seo JH, Ahn SK

Ceruminous adenoma is a benign neoplasm of the ceruminous gland, and its development in human external auditory canal is very rare. Due to the limited number of cases, controversy still...
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A Case of Bilateral External Auditory Canal Pyogenic Granuloma in a Pregnant Woman

Song K, Lee J, Park MJ, Lee HY

A pyogenic granuloma is one of the most common benign tumors in the head and neck. However, it rarely occurs in the external auditory canal (EAC). We report a case...
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A Case of Hemangioma in the External Auditory Canal with Pulsatile Tinnitus

Kim H, Seo J, Lee HJ

Hemangiomas are relatively common in the head and neck region, but their occurrence in the temporal bone are extremely rare. The hemangioma of the external auditory canal (EAC) is a...
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