ArticleSurgical and radiologic anatomy : SRA2022
An extremely short posterior communicating artery diagnosed by magnetic resonance angiography.
Article in Surgical and radiologic anatomy : SRA, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Abstract
purposeTo describe a case of an extremely short posterior communicating artery (PCoA) incidentally diagnosed by magnetic resonance (MR) angiography. CASE REPORT: A 48-year-old woman with Parkinson's disease underwent cranial MR imaging and MR angiography. MR imaging revealed no abnormality. After creating partial maximum-intensity-projection (MIP) images, MR angiography showed an extremely short right PCoA, only 4 mm long. The P1 segment of the right posterior cerebral artery (PCA) took an anterior course, and at the junction with the PCoA, the PCA made a hairpin turn and ran posteriorly. The length of the P1 segment was approximately 20 mm, which was relatively long. DISCUSSION: According to an anatomical study using 170 cadaveric brains, the length of the PCoA ranged 5 to 26 mm (mean: 15 mm). Another 2 anatomical studies reported that the shortest PCoA was 7 mm. The present case had an extremely short right PCoA connecting with a hairpin turn at the P1-P2 junction, a unique configuration.
conclusionTo identify this variation by MR angiography, creation of partial MIP images was useful.
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