The focal hepatic hot spot sign with lung cancer in computed tomography

Hoang, Van Trung; Vo, Nhu Quynh; Trinh, Cong Thao; Nguyen, Hoang Quan; Chansomphou, Vichit; Le, Trong Binh

doi:10.1002/rcr2.671

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…This abnormal enhancement is due to portosystemic venous shunting between the SVC and portal vein. The hot spot is created by areas of focally increased blood flow that result from this shunting [2]. This sign has been reported in Budd-Chiari syndrome, the causes of SVC syndrome (neoplasms of the thorax as lung carcinoma and lymphoma, Vasculo-Behcet's disease, fibrosing mediastinitis, and luetic aneurysm) [3].…”

Section: Discussionmentioning

confidence: 87%

Focal Hepatic Hot Spot Sign

DA¹,

Retal²,

Onka³

et al. 2021

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Section: Discussionmentioning

confidence: 87%

Focal Hepatic Hot Spot Sign

DA¹,

Retal²,

Onka³

et al. 2021

austinjradiol

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“…Hot spot sign is caused by portosystemic venous shunting between the superior vena cava and the left portal vein via the internal mammary and paraumbilical veins along the ligamentum teres, secondary to superior vena cava obstruction. The hot spot is created by areas of focally increased blood flow that result from this shunting [2]. Stanford and colleagues classified SVC syndrome into four types -type I and type II referred as supra-azygous partial and near complete obstruction of SVC with antegrade flow in azygous vein.…”

Section: Descriptionmentioning

confidence: 99%

Focal hepatic hot spot sign: Clinical image

Benmoussa,

Naggar,

Aoufir

et al. 2023

Open J Clin Med Case Rep

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A 51‐year‐old women was hospitalized to start chemotherapy for small cell lung cancer diagnosed one months earlier. She underwent Computed Tomography (CT) of the chest and abdomen to re‐evaluate the progression of the lung tumour. Contrast-enhanced CT of the chest indicated an invasive anterior left lung tumour that caused an obstruction of the Superior Vena Cava (SVC) (Figure 1). Contrast-enhanced CT of the abdomen revealed an intense focal wedge-shaped homogeneous enhancement area in the quadrate lobe of the liver, which is known as the hot spot sign (Figure 2). Focal hepatic hot spot sign was first described by Ishikawa in 1983. The sign can be observed on technetium 99m (99mTc) Sulphur colloid scans or on contrast, material enhanced CT scans [1]. Hot spot sign is caused by portosystemic venous shunting between the superior vena cava and the left portal vein via the internal mammary and paraumbilical veins along the ligamentum teres, secondary to superior vena cava obstruction. The hot spot is created by areas of focally increased blood flow that result from this shunting [2]. Stanford and colleagues classified SVC syndrome into four types - type I and type II referred as supra-azygous partial and near complete obstruction of SVC with antegrade flow in azygous vein. Type III is defined as complete obstruction of SVC with reversal of azygous blood flow and type IV as complete obstruction of SVC and azygous system with development of chest wall collaterals [3]. This sign has been reported in Budd-Chiari syndrome, the causes of SVC syndrome (neoplasms of the thorax as lung carcinoma and lymphoma, Vasculo‐Behcet’s disease, fibrosing mediastinitis, and luetic aneurysm), and masses of the liver (abscess, haemangioma, focal nodular hyperplasia, and hepatocellular carcinoma) [4].

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“…Focal hot spot sign Contrast stasis in the right-side cardiac chambers and SVC may result in functional flow of CM through venous collaterals (anterior intercostal, internal thoracic, superior and inferior epigastric veins communicating with paraumbilical vein carrying the blood and the CM to the hepatic vein and to the left lobe of the liver) to the inferior vena cava, generating areas of focally increased blood flow to the liver, typically within segment IV of the left hepatic lobe, known as a focal hot spot sign (Figure 5) [69][70][71].…”

mentioning

confidence: 99%

Multidetector CT Imaging Biomarkers as Predictors of Prognosis in Shock: Updates and Future Directions

et al. 2023

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A severe mismatch between the supply and demand of oxygen is the common sequela of all types of shock, which present a mortality of up to 80%. Various organs play a protective role in shock and contribute to whole-body homeostasis. The ever-increasing number of multidetector CT examinations in severely ill and sometimes unstable patients leads to more frequently encountered findings leading to imminent death, together called “hypovolemic shock complex”. Features on CT include dense opacification of the right heart and major systemic veins, venous layering of contrast material and blood, densely opacified parenchyma in the right hepatic lobe, decreased enhancement of the abdominal organ, a dense pulmonary artery, contrast pooling in dependent lungs, and contrast stasis in pulmonary veins. These findings are biomarkers and prognostic indicators of paramount importance which stratify risk and improve patient outcomes. In this review, we illustrate the various CT patterns in shock and review the spectrum and prognostic significance of thoraco-abdominal vascular and visceral alarming signs of impending death with the intention of increasing awareness among radiologists and radiographers to prepare for immediate resuscitation when required.

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The focal hepatic hot spot sign with lung cancer in computed tomography

Cited by 3 publications

References 2 publications

Focal Hepatic Hot Spot Sign

Focal Hepatic Hot Spot Sign

Focal hepatic hot spot sign: Clinical image

Multidetector CT Imaging Biomarkers as Predictors of Prognosis in Shock: Updates and Future Directions

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