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Ring-shaped Dandy's superior petrosal vein
Mugurel Constantin Rusu1, Mihai Lazăr2, Alexandra Diana Vrapciu3,4
1Division of Anatomy, Department 1, Faculty of Dentistry, "Carol Davila" University of Medicine and Pharmacy, 8 Eroilor Sanitari Blvd., 050474, Bucharest, Romania. mugurel.rusu@umfcd.ro.
Surgical and Radiologic Anatomy : SRA
|October 9, 2023
Summary
A rare ring-shaped superior petrosal vein (SPV) variant was identified, important for neurosurgeons. Understanding this Dandy
Area of Science:
- Neurosurgery
- Vascular Anatomy
- Medical Imaging
Background:
- Dandy's superior petrosal vein (SPV) anatomy is crucial for neurosurgical procedures.
- The SPV connects to the superior petrosal sinus (SPS), near critical cranial nerve foramina.
Purpose of the Study:
- To describe a previously unreported anatomical variation of the superior petrosal vein.
- To highlight the clinical significance of this venous anomaly in neurosurgery.
Main Methods:
- Analysis of archived enhanced Magnetic Resonance Imaging (MRI) data from a single male patient.
- Detailed examination of the venous structures in the posterior cranial fossa.
Main Results:
- Identification of an infratentorial, ring-shaped (RS) superior petrosal vein on the right cerebellar hemisphere.
- The RS-SPV drained into the superior petrosal sinus superior to the internal auditory pore and posterolateral to the trigeminal pore.
- Anteriorly, the venous ring received a supratrigeminal plexus and formed a single trunk on the cerebellar surface.
Conclusions:
- This novel RS-SPV variant necessitates pre-operative identification.
- Awareness of this anomaly is critical for planning subtemporal transtentorial and retrosigmoid surgical approaches.
- Accurate anatomical knowledge of SPV variations enhances surgical safety and efficacy.
Keywords:
Cerebellar veinInternal auditory meatusSuperior petrosal sinusTentorium cerebelliTrigeminal nerveMore Related Videos
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