Otolaryngology and Otoneurosurgery Department, Azienda Ospedaliero-Universitaria di Parma, Italy.
Neuroradiology Department, Azienda Ospedaliero-universitaria di Modena.
J Int Adv Otol. 2020 Dec;16(3):473-476. doi: 10.5152/iao.2020.7854.
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.
本文报道了 1 例乳突皮样囊肿（DC）病例，并分析了其与其他颞骨 DC 病例的差异。同时，将乳突 DC 与先天性乳突胆脂瘤进行了比较。我们报告了 1 例乳突 DC 患者的临床、影像学和手术发现，并对文献进行了回顾，将我们的发现与已报道的结果进行了比较。术前影像学评估促使我们计划对病变进行手术治疗，怀疑存在先天性乳突胆脂瘤。手术结果符合乳突 DC 的存在。文献中仅报道了两例符合真正乳突 DC 标准的病例。局限于乳突区的 DC 是一种极为罕见的临床实体，其具有无症状和缓慢生长的特点。先天性胆脂瘤和具有非典型特征的 DC 之间的术前影像学鉴别可能较为困难，但在这两种情况下，手术切除都是首选治疗方法。诊断通过组织学评估得到确认。
