Dehiscent jugular bulb
It is one of the causes of pulsatile tinnitus and is a common cause of a retrotympanic vascular mass. Clearly, if it is mistaken for a middle ear tumour and biopsied, then the consequences can be disasterous (as is biopsying an aberrant internal carotid artery).
- given the often turbulent flow within the jugular bulb, signal on MRI can be confusing.
- the presence of the sigmoid plate can only be ascertained on CT.
- 1. Swartz JD, Harnsberger HR. Imaging of the temporal bone. George Thieme Verlag. (1998) ISBN:0865777004. Read it at Google Books - Find it at Amazon
- 2. Krishnan A, Mattox DE, Fountain AJ et-al. CT arteriography and venography in pulsatile tinnitus: preliminary results. AJNR Am J Neuroradiol. 2006;27 (8): 1635-8. AJNR Am J Neuroradiol (full text) - Pubmed citation
Synonyms & Alternative Spellings
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