{Reference Type}: Journal Article
{Title}: Ring-shaped Dandy's superior petrosal vein.
{Author}: Rusu MC;Lazăr M;Vrapciu AD;
{Journal}: Surg Radiol Anat
{Volume}: 45
{Issue}: 12
{Year}: 2023 Dec 9
{Factor}: 1.354
{DOI}: 10.1007/s00276-023-03248-y
{Abstract}: <B>BACKGROUND: </B>Dandy's superior petrosal vein (SPV) anatomy is highly relevant for neurosurgeons. The SPV drains into the superior petrosal sinus (SPS), closely related to the trigeminal and internal auditory pores.<BR><B>METHODS: </B>The archived enhanced MRI files of a male patient were studied.<BR><B>RESULTS: </B>An infratentorial ring-shaped (RS) SPV was found on the petrosal surface of the right cerebellar hemisphere. It was inserted in the SPS above the internal auditory pore, postero-lateral to the trigeminal pore. The anterior arm of that venous ring received a delicate supratrigeminal plexus of veins from the pontine surface and continued as a single venous trunk on the cerebellar surface.<BR><B>CONCLUSIONS: </B>Such previously unreported RS-SPV is of utmost importance to be identified before subtemporal transtentorial and retrosigmoid approaches for different neurosurgical reasons.