An aberrant internal carotid artery in the middle ear is a rare otological finding.

中耳腔之异位内动，文献报导极少。

Dehiscence of the floor of the hypotympanum with protrusion of the jugular bulb into the middle ear cavity is a rare otological finding.

球经下鼓室底部骨层裂隙膨入中耳腔，是一种罕见的中耳腔血管异常。