Spontaneous cholesteatoma of the external auditory canal: The utility of CT

Omezzine, S. Jerbi; Hmida, N. Ben; Saidi, M.; Rhouma, K. Ben; Driss, Nabil; Hamza, H.A.

doi:10.1016/j.diii.2013.01.010

Cited by 7 publications

(5 citation statements)

References 9 publications

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“…CT evaluated middle ear bones, bone destructions, facial canal involvement, labyrinth fistula, soft tissue localizations in the studies until today [1,2,6] . Temporal CT may also evaluate temporal bone complications and cerebellar abscess, extra-dural abscess or otitic hydrocephalus [7] .…”

Section: Discussionmentioning

confidence: 99%

Comparison Of Middle Ear Soft Tissue Density Of Chronic Otitis Media With Cholesteatoma By CT

Tok¹,

Altınkaya²,

Özer³

2018

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Objective: Chronic otitis media is the infection of the middle ear and mastoid air cells. Cholesteatoma is keratinized squamous epithelium formation in the middle ear. Although the two diseases may be recognized with clinical examination, sometimes it may not be possible. While treatment of chronic otitis media includes antibiotic therapy or surgery, cholesteatoma is treated surgically. In this study, we aimed whether quantitative measurement of the soft tissue density in the middle ear on temporal bone CT may be used as a criterion for discrimination of chronic otitis media and cholesteatoma. Materials and Methods: A total of 45 patients were included in the study. Multi-slice CT images were obtained in supine position for temporal bone CT. The soft tissue density was measured using free hand and circle region of interest (ROI) techniques on temporal bone CT examinations. Results: A statistically significant difference was not detected between cholesteatoma and COM with regard to HU values on temporal bone CT in ROC curve. P value and Mann Whitney U was not statistically significant. Conclusion: As a result, soft tissue density measurement is not statistically significant for differential diagnosis of COM and cholesteatoma.

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Section: Discussionmentioning

confidence: 99%

Comparison Of Middle Ear Soft Tissue Density Of Chronic Otitis Media With Cholesteatoma By CT

Tok¹,

Altınkaya²,

Özer³

2018

ENT Updates

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“…El estudio radiológico nos sirve para conocer la extensión de las lesiones y delimitar su proximidad al oído medio y a estructuras neurovasculares [14], permitiéndonos planificar el acceso quirúrgico [2]. Sobre todo, utilizaremos la Tomografía Computerizada, que demuestra mejor la extensión de la erosión ósea [14, [24][25].…”

Section: Distribución Sociodemográficaunclassified

Colesteatoma de conducto auditivo externo: estudio de una serie de casos

Viveros-Díez

Benito-Orejas

Fernández-Rodríguez

et al. 2019

ORL

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Introducción y objetivos: El colesteatoma de conducto auditivo externo (CCAE) es un proceso patológico poco frecuente, caracterizado por la invasión de tejido escamoso en un área del canal auditivo, que progresa hasta la destrucción ósea. Debido a la escasez de casos publicados hemos considerado de utilidad esta revisión. Material y métodos: Estudio prospectivo y observacional desde el año 2000, de 18 pacientes diagnosticados clínicamente de CCAE en nuestro servicio de ORL. Resultados: El porcentaje de hombres y mujeres es similar, con una edad media de diagnóstico de 60 años. La localización más frecuente es posteroinferior y en la mayor parte de casos el origen es primario. La otalgia, la otorrea y la hipoacusia fueron los síntomas principales, siendo menos habitual el prurito y excepcional la debilidad facial. En general el tratamiento es conservador, pero resultó necesario el abordaje quirúrgico en un tercio de pacientes mediante canaloplastia, siguiendo el esquema expuesto, o la mastoidectomía, en función de la extensión de las lesiones. Conclusiones: Aunque desconocemos los mecanismos patogénicos responsables de la formación y desarrollo del CCAE, la inclusión de queratina entre el epitelio y el hueso, con la participación del periostio, parecen ser los desencadenantes del proceso. El diagnóstico es clínico y su extensión determina el empleo de un tratamiento local o quirúrgico, que suele ser resolutivo.

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“…External auditory canal cholesteatoma (EACC) presents uncertain etiology, representing an invasion of the squamous epithelium associated with erosion in a localized area of the external auditory canal (EAC). Several theories have been presented to try to explain the aetiology and pathogenesis of this disease: localized periostitis, chronic inflammation of the EAC, failed spontaneous elimination of desquamated epithelial cells and dehiscence of the petrotympanic fissure [2,3]. Smoking and small traumas in the ear canal may also predispose its onset [2] and there are described cases of EACC post-radiotherapy, probably due to tissue degradation with eventual radionecrosis, impairing normal collagen synthesis and cell production [4].…”

Section: Introductionmentioning

confidence: 99%

“…Hearing is usually preserved.6 Since the evolution is slow and not very symptomatic, its diagnosis can be late, evolving with progressive bone destruction and involvement of important neighboring structures (lateral sinus, facial nerve, posterior fossa). Computed tomography (CT) is recommended for all patients, on suspicion of EACC [3,8].…”

Section: Introductionmentioning

confidence: 99%

Extended External Auditory Canal Cholesteatoma: Case Report and Literature Review

Antunes¹

2018

JHNSS

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Introduction: External auditory canal cholesteatoma (EACC) is a rare disease that manifests with unilateral insidious chronic pain and otorrhea. Its evolution is slow and not very symptomatic, and its diagnosis may be delayed. Hearing is usually preserved. Computed tomography (CT) is recommended for all patients. Treatment may be clinical or surgical.Case report: Female, 69 years old, with complaint of hypoacusis and right otorrhea 10 months ago. Otoscopy of the right ear with epidermal debris in the external auditory canal and intact tympanic membrane. Tonal audiometry showed moderate right mixed loss. Temporal bone CT with expansive formation with soft tissue density with insinuation to the external auditory canal on the right. MRI with lesion presenting hypersignal at T2 and in the diffusion sequence, in close contact with the sigmoid sinus. The patient underwent open mastoidectomy. During the intraoperative period, facial nerve, sigmoid sinus, jugular bulb, posterior and middle fossa meningeal exposures were observed. Patient progressed well, without facial paralysis or recurrence of the disease.Discussion: This work calls attention to a case of EACC with extensive invasion of the mastoid at the diagnosis. The diagnosis of the lesion was clinical. CT and MRI aided in the differential diagnosis. EACC, due to its insidious nature and anatomical correlation with noble structures, should always be remembered in the differential diagnosis of external auditory canal lesions.

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Spontaneous cholesteatoma of the external auditory canal: The utility of CT

Cited by 7 publications

References 9 publications

Comparison Of Middle Ear Soft Tissue Density Of Chronic Otitis Media With Cholesteatoma By CT

Comparison Of Middle Ear Soft Tissue Density Of Chronic Otitis Media With Cholesteatoma By CT

Colesteatoma de conducto auditivo externo: estudio de una serie de casos

Extended External Auditory Canal Cholesteatoma: Case Report and Literature Review

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