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Vol. 32. Issue 3.
Pages 134-141 (May - June 2021)
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Vol. 32. Issue 3.
Pages 134-141 (May - June 2021)
Caso clínico
Carcinoma de células escamosas del conducto auditivo que infiltra al hueso temporal: a propósito de un caso
Squamous cell carcinoma of the ear canal infiltrating the temporal bone: A case report
Klever Palacios-Ruilovaa,
Corresponding author
kleverfercho20@gmail.com

Autor para correspondencia.
, Marlon Reyes-Lunaa,b, Sandra Freire-Cuestaa
a Carrera de Medicina Humana de la Universidad Nacional de Loja, Loja, Ecuador
b Hospital General Isidro Ayora de Loja, Loja, Ecuador
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Tabla 1. Clasificación actualizada del cáncer de hueso temporal
Resumen

El carcinoma epidermoide del conducto auditivo es una entidad derivada del estrato espinocelular, es una neoplasia poco frecuente, con baja incidencia presentándose uno a seis casos por millón de habitantes, por lo cual existe poca información bibliográfica sobre esta patología. La clínica de presentación del cáncer de hueso temporal usualmente es inespecífica, por lo que su diagnóstico es siempre tardío. El diagnóstico definitivo requiere de biopsia de la lesión para estudio histopatológico e inmunohistoquímico y así poder establecer el comportamiento y el grado de diferenciación. Presentamos a continuación el caso de una paciente adulta con antecedente clínico de osteoporosis, diagnosticada con otitis media crónica de oído izquierdo de años de evolución, acompañada de secreción purulenta del mismo que no respondió a múltiples esquemas de tratamiento. Cursó con cefalea de predominio temporal izquierdo refractaria a analgesia convencional. En tomografía computarizada de cráneo se evidenció lesión osteolítica del hueso temporal izquierdo con invasión hacia duramadre. Tras resección y toma de biopsia de la lesión se confirma carcinoma epidermoide moderadamente diferenciado.

Palabras clave:
Cáncer de hueso temporal
Carcinoma epidermoide
Otitis media crónica
Osteosarcoma
Abstract

Squamous cell carcinoma of the ear canal is an entity that arises from the stratum spinosum; it is a rare neoplasm, with a low incidence presenting 1 to 6 cases per million inhabitants, so there is little literature on this pathology. The clinical presentation of temporal bone cancer is usually nonspecific, meaning that its diagnosis is always a late-stage discovery. The definitive diagnosis requires biopsy of the lesion for histopathological and immunohistochemical study to establish the behaviour and the degree of differentiation. We present the case of an adult female patient with a clinical history of osteoporosis, diagnosed with chronic otitis media of the left ear of years of evolution, accompanied by purulent secretion of the same ear that did not respond to multiple treatment regimens. The patient also presented with a headache of left temporal predominance refractory to conventional analgesia. Cranial CT scans showed an osteolytic lesion of the left temporal bone with dural invasion. After resection and biopsy of the lesion, moderately differentiated squamous cell carcinoma was confirmed.

Keywords:
Temporal bone cancer
Squamous cell carcinoma
Chronic otitis media
Osteosarcoma

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