The Hot Quadrate Sign on a Ventilation-Perfusion (V/Q) Scan.

Cureus

Department of Diagnostic Radiology and Nuclear Medicine, Rush University Medical Center, Chicago, USA.

Published: July 2024

The hot quadrate sign is defined as an intense arterial enhancement in the hepatic quadrate lobe, most frequently encountered on CT angiograms in patients with central venous occlusion. It has also been described as focal uptake on technetium-99m (Tc99m) sulfur colloid scans. We present an unusual case of focal uptake in the hepatic quadrate lobe on a ventilation-perfusion (V/Q) scan, corresponding to the hot quadrate sign in a 42-year-old patient with chronic kidney disease and central venous occlusion.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11309764PMC
http://dx.doi.org/10.7759/cureus.64122DOI Listing

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