In this paper, a case of dehiscent jugular bulb presenting as an asymptomatic retrotympanic bluish mass in the right ear of a 49-year-old male is reported.

• 本文报告一49岁男性，在例行健康检查时，发现右耳鼓膜后面，鎚骨柄下方有一半球形暗黑色肿块。