Hot Quadrate Sign Under Focus of F18-FDG PET-CT: An Incidental Finding

Authors

  • Ayesha Zubair Department of Nuclear Medicine, Shaukat Khanum Memorial Cancer Hospital and Research Center, Lahore.
  • Aamna Hassan Department of Nuclear Medicine, Shaukat Khanum Memorial Cancer Hospital and Research Center, Lahore.

DOI:

https://doi.org/10.47391/JPMA.25-06

Abstract

“Hot quadrate lobe sign” refers to visualization of caudate lobe of liver due to excess accumulation of radiotracer
secondary to superior vena cava obstruction. Collateral channels are formed between thoracic and mediastinal
vessels; internal mammary through the paraumbilical vessels which drain blood to the left portal vein and into the
caudate lobe of liver. It was first described on Tc99-m sulfur colloid scan. We present a case with superior vena cava
obstruction presenting as hot quadrate lobe sign on F18-FDG PET-CT.
Keywords: F18-FDG PET-CT, caudate lobe, superior vena obstruction, collateral vessels.

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Published

2024-12-23

How to Cite

Ayesha Zubair, & Aamna Hassan. (2024). Hot Quadrate Sign Under Focus of F18-FDG PET-CT: An Incidental Finding. Journal of the Pakistan Medical Association, 75(1), 142–143. https://doi.org/10.47391/JPMA.25-06

Issue

Vol. 75 No. 1 (2025): JANUARY

Section

IMAGING CORNER

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Copyright (c) 2024 Journal of the Pakistan Medical Association

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