The Journal of International
Advanced Otology
Case Report

Mastoid Dermoid Cyst


Otolaryngology and Otoneurosurgery Department, Azienda Ospedaliero-Universitaria di Parma, Italy


Neuroradiology Department, Azienda Ospedaliero-universitaria di Modena


Pathology Unit, Department of Medicine and Surgery, University of Parma, Azienda Ospedaliero-Universitaria di Parma, Parma, Italy

J Int Adv Otol 2020; 16: 473-475
DOI: 10.5152/iao.2020.7854
Read: 849 Downloads: 414 Published: 16 October 2020

A case of mastoid dermoid cyst (DC) was presented, and differences with cases of other temporal bone DCs were analyzed. The mastoid DC was also compared with mastoid congenital cholesteatoma. We reported a case of a patient with mastoid DC, evaluating her clinical, radiological, and surgical findings. A review of the literature was performed to compare our findings with those reported. The preoperative radiological evaluation prompted us to plan a surgical approach to the lesion, suspecting the presence of a mastoid congenital cholesteatoma. The surgical findings were in line with the presence of a mastoid DC. Only two cases reported in the literature presented features that fulfilled the criteria of a true mastoid DC. A DC confined to the mastoid region is an extremely rare clinical entity, with asymptomatic and slow growth. Preoperative radiological differentiation between congenital cholesteatoma and DCs with atypical features can be difficult. However, surgical excision is the treatment of choice in both cases. Diagnosis is confirmed by the histological evaluation.

Cite this article as: Pepe G, Canzano F, Piccinini S, Corcione L, Falcioni M. Mastoid Dermoid Cyst. J Int Adv Otol 2020; 16(3): 473-5.

EISSN 2148-3817