Squamous Cell Carcinoma of Temporal Bone after Brain Tumor Treatment: A Tricky Diagnosis of a Late Radiotherapy Complication

Souza Thiago Sasso Carmona De,Steffens Sara Thaís,Amadeu Nicole Tássia,Masi Roberta David João De,Pires Ícaro De Almeida Toledo,Raymundo Fellipy Martins,Hamerschmidt Rogério

doi:10.36959/605/543

Abstract

Primary cancer of the External Auditory Meatus (EAM) is a rare disease, with squamous cell carcinoma (SCC) being the most frequent histological type. The invasion of local tissues occurs in most cases, and its treatment is a challenge due to the complex local anatomy. This report presents the case of a 40-year-old patient who presented with a complaint of chronic otorrhea associated with a mass in EAM and a history of treatment of posterior fossa astrocytoma 17 years ago, treated with neurosurgery followed by radiotherapy.

Highlights

Primary Cancer of the External Auditory Meatus (EAM) is rare, with an incidence of approximately 1 to 6 cases per million per year [1,2]
The non-specific clinic associated with the complexity of the local anatomy makes the temporal bone Squamous Cell Carcinoma (SCC) a major diagnostic and therapeutic challenge [7,8]
The purpose of this article is to report a case of SCC of EAM after brain radiotherapy and its successful surgical treatment

Summary

Introduction

Primary Cancer of the External Auditory Meatus (EAM) is rare, with an incidence of approximately 1 to 6 cases per million per year [1,2]. Among the risk factors for the disease are chronic suppurative otitis media, exposure to chemical agents, and previous local radiotherapy, which is the most important factor [2,5,6]. These tumors usually have an aggressive behavior, with frequent invasion of adjacent structures and high morbidity and mortality [6]. The purpose of this article is to report a case of SCC of EAM after brain radiotherapy and its successful surgical treatment

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Discussion

Conclusion