Bilateral squamous cell carcinoma of the external auditory canal

Effectiveness of chemoradiotherapy for radiation-induced bilateral external auditory canal cancer: A case report and literature review

BACKGROUND

Radiation-induced bilateral external auditory canal cancer is an extremely rare disease that has yet to be fully characterized in the clinical literature.

METHODS

Herein, we present a case study of a 75-year-old man with radiation-induced bilateral external auditory canal cancer. The patient's medical history included left maxillary cancer that had been treated with chemoradiation 19 years earlier and local recurrence with total maxillectomy 10 years earlier. Intracavitary radiation was delivered to the site of postoperative recurrence 8 years before the current presentation. The patient declined radical surgery for the external auditory canal cancer at this time, and a customized combined modality regimen was thus administered.

RESULTS

There was no recurrence of cancer for 22 months, to date, after completing chemoradiotherapy.

CONCLUSIONS

Our finding that radiotherapy can be successfully used for radiation-induced cancer indicates that chemoradiotherapy may be a useful strategy for treating this type of malignancy.

Bilateral carcinoma of the temporal bone: case report and literature review

INTRODUCTION

Squamous cell carcinoma of the temporal bone is a rare entity. Only a few cases have been reported in the literature and even fewer describe bilateral tumours. Because its clinical presentation resembles chronic otitis media or otitis externa, diagnosis could be delayed.

CASE REPORT

A case is presented of bilateral squamous cell carcinoma of the temporal bone in a 66 year old woman. The patient underwent a left subtotal petrosectomy followed by a right subtotal petrosectomy a month later.

CONCLUSIONS

Early diagnosis is directly related to patient prognosis. However, prognosis remains poor and the surgical treatment is a challenge for the experienced skull base surgeon.

Prosthetic rehabilitation of intentionally malpositioned implants in a patient with squamous cell carcinoma of the external auditory canal: a clinical report

This clinical report describes the rehabilitation of a patient with a compromised temporal bone anatomy caused by resection of bone due to squamous cell carcinoma of external auditory canal. Tumor resection was followed by placement of three implants. The implants were intentionally malpositioned in the anterior-posterior plane due to the lack of temporal bone. Prosthodontic treatment included customized implant bar-supported auricular prosthesis.

Bilateral external auditory canal squamous cell carcinoma: a case report

Squamous cell carcinoma (SCC) of the external auditory canal (EAC) is an extremely rare malignant tumor with a prevalance between 1 and 6 cases per 1 million population. The incidence is higher in patients presenting with otological diseases (1 in 5,000 to 15,000). Certain associating factors have been described in the literature. This malignancy frequently presents with symptoms similar to a case of otitis externa or a chronic suppurative otitis media. In this paper, we present a patient who had bilateral SCC of EAC caused by radiotherapy for nasopharyngeal carcinoma. To our knowledge, our case is the fifth bilateral SCC of the EAC and the first bilateral radiotherapy related SCC of the EAC reported in the literature so far.