外耳道软骨化生的神经鞘瘤——罕见部位的罕见发现：一例报告
Schwannoma with chondroid metaplasia of the external auditory canal - a rare finding in a rare location: a case report.
作者信息
Bennani Amal, Karich Nassira, Kamaoui Imane, Chraibi Meryem, Abbaoui Sanaa
机构信息
Departement of Pathology, Mohamed I University, 30050, Oujda, Morocco.
, Assaada, BP 6210, 60020, Oujda, Morocco.
出版信息
J Med Case Rep. 2018 Mar 13;12(1):66. doi: 10.1186/s13256-018-1584-4.
BACKGROUND
Schwannomas are uncommon tumors of the external auditory canal. In the English literature, very few cases of schwannomas originating in the external auditory canal were reported and none of them showed chondroid metaplasia. We report the first case of schwannoma with chondroid metaplasia in this location.
CASE PRESENTATION
In this report, we described a 22-year-old white man who presented with an external auditory slow growing mass. A computed tomography scan of the temporal bone demonstrated a well-circumscribed, soft tissue mass narrowing most of the external auditory canal. A surgical biopsy was performed and the histological examination showed a schwannoma with chondroid metaplasia.
CONCLUSION
Schwannoma should be considered in the differential diagnosis of benign or malignant tissue masses involving the external ear canal.
背景
施万细胞瘤是外耳道罕见的肿瘤。在英文文献中，起源于外耳道的施万细胞瘤报道极少，且均未显示软骨化生。我们报道此部位首例伴有软骨化生的施万细胞瘤。
病例报告
在本报告中，我们描述了一名22岁白人男性，其外耳道出现缓慢生长的肿物。颞骨计算机断层扫描显示一个边界清晰的软组织肿物，使大部分外耳道变窄。进行了手术活检，组织学检查显示为伴有软骨化生的施万细胞瘤。
结论
在涉及外耳道的良性或恶性组织肿物的鉴别诊断中应考虑施万细胞瘤。
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