外耳道骨瘤和外生骨疣很少手术切除,故文献中的组织学报告极少。作者根据5例骨瘤和2例外生骨疣的症状、组织学检查所见,提出两者的各自诊断标准如下: 骨瘤:通常为一孤立的带蒂肿物,好发在鼓鳞缝或鼓乳缝,从外耳道峡表面长出。呈良性而缓慢生长,可阻塞外耳道。小而多发的骨瘤偶也可见。组织学特点是表面覆有厚的鳞状上皮和骨膜,其内部有大量被骨板围绕的疏松的纤维血管管道,有的管道呈不规则并含有大量纤维组织及窦状血管。在管道之间有厚度不同、方向不一的骨质。在折断面可见少数骨细胞及腔隙。外生骨疣:在外耳道有广基骨质增生性隆 External orbital osteoma and exogenous osteophytes are rarely surgically removed, so few histological reports are available in the literature. According to the findings of 5 cases of osteoma and 2 cases of osteophytes, the authors presented their respective diagnostic criteria as follows: Osteosarcoma: usually a solitary pedunculated mass, which may occur in the spurs or Drums were sewn from the surface of the external auditory canal. Being benign and slowly growing can block the external auditory canal. Small, multiple bone tumors are also visible. Histologically, the surface is covered with thick squamous epithelium and periosteum. Inside, there are a large number of loose fiber vascular conduits surrounded by bone plates, some of which are irregular and contain a large number of fibrous tissue and sinusoidal vessels. There are different thicknesses and different directions of bone between the pipes. A few bone cells and lacunae can be seen on the fracture surface. Exophytic osteophytes: a broad-based osteoproliferative hyperplasia in the external auditory canal