Citation, DOI, disclosures and article data
Citation:
Thapa S, Feger J, Vascular groove sign. Reference article, Radiopaedia.org (Accessed on 22 Mar 2025) https://doi.org/10.53347/rID-199921
The vascular groove sign is a radiological sign which is primarily seen on CT as radiolucent serpiginous or linear grooves extending from the periosteal surface of the cortex down to the tumour nidus referring to enlarged arterioles delivering blood from the periosteum to the hypervascular tumour nidus.
Clinical importance
According to a study 1, this sign is moderately sensitive (~74-76%) yet seems to be highly specific (~90-96%) for distinguishing osteoid osteomas from other radiolucent bone lesions.
A correlating finding might be present in MRI imaging studies up to half of patients 3.
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1. Liu P, Kujak J, Roberts C, de Chadarevian J. The Vascular Groove Sign: A New CT Finding Associated With Osteoid Osteomas. AJR Am J Roentgenol. 2011;196(1):168-73. doi:10.2214/ajr.10.4534 - Pubmed
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2. Kumar M & KrishnaKumar R. Vascular Groove Sign in Osteoid Osteoma of the Vertebral Body. J Orthop Spine. 2020;8(1):38. doi:10.4103/joasp.joasp_8_20
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3. Swenson, D, Dupuy, D, Evangelista, P, Osteoid Osteoma: Assessing the Vascular Groove Sign as a Characteristic Finding on Both CT and MRI. Radiological Society of North America 2011 Scientific Assembly and Annual Meeting, November 26 - December 2, 2011 ,Chicago IL. RSNA Archives 2011 - SSC10-01 - Accessed November 20, 2024.
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