Disappearing basal ganglia sign
Last revised by Rohit Sharma on 14 Feb 2024
Citation, DOI, disclosures and article data
Citation:
Batta N, Sharma R, Elfeky M, et al. Disappearing basal ganglia sign. Reference article, Radiopaedia.org (Accessed on 19 Apr 2024) https://doi.org/10.53347/rID-24703
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rID:
24703
Article created:
5 Sep 2013,
Nafisa Shakir Batta
Disclosures:
At the time the article was created Nafisa Shakir Batta had no recorded disclosures.
View Nafisa Shakir Batta's current disclosures
Last revised:
14 Feb 2024,
Rohit Sharma ◉
Disclosures:
At the time the article was last revised Rohit Sharma had no financial relationships to ineligible companies to disclose.
View Rohit Sharma's current disclosures
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8 times, by
8 contributors -
see full revision history and disclosures
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The disappearing basal ganglia sign is one of the early signs of a middle cerebral artery (MCA) infarction. It is defined as the loss of delineation of the basal ganglia, due to blurring of their grey-white matter interface and hypoattenuation, consequent to cytotoxic edema at the time of an ischemic event.
It is best appreciated when compared to the contralateral side.
Other associated early signs of MCA infarction are:
- loss of the insular ribbon sign
- obscuration of the lentiform nucleus
- hyperdense MCA sign
Quiz questions
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References
- 1. Saenz R. The Disappearing Basal Ganglia Sign. Radiology. 2005;234(1):242-3. doi:10.1148/radiol.2341030252 - Pubmed
- 2. Nakano S, Iseda T, Kawano H, Yoneyama T, Ikeda T, Wakisaka S. Correlation of Early CT Signs in the Deep Middle Cerebral Artery Territories with Angiographically Confirmed Site of Arterial Occlusion. AJNR Am J Neuroradiol. 2001;22(4):654-9. PMC7976034 - Pubmed
- 3. Truwit C, Barkovich A, Gean-Marton A, Hibri N, Norman D. Loss of the Insular Ribbon: Another Early CT Sign of Acute Middle Cerebral Artery Infarction. Radiology. 1990;176(3):801-6. doi:10.1148/radiology.176.3.2389039 - Pubmed
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