Focal Hepatic Hotspot [Hot Quadrate lobe sign]
More about focal hepatic hot spot indication:
– Also referred to as Focal hepatic location sign due to its look on technetium 99 m sulfur colloid scans.
– SVC blockage – if partial – drain by collateral vessels – internal thoracic, superficial thoraco-abdominal veins and paraumbilical veins – left portal vein.
– This region is usually drained pipes by the exceptional vein of Sappey.
– Only seen on ARTERIAL phase.
– Medical significance:
– Long standing SVC obstruction.
– Pseudolesion.
– Differentials: Focal nodular hyperplasia, hepatocellular adenoma, HCC, hemangioma.
– Hot Caudate lobe indication is seen in Budd Chiari syndrome
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We go over a case of hot quadrate lobe sign in the liver on CT, seen in a case of SVC blockage due to lung carcinoma. Likewise seen is a left adrenal metastases.
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In this video we go over a few interesting radiology cases.
⌚ Time Stamps.
0: 00 Introduction.
0: 15 Stream starts.
0: 58 PACS based radiology case images.
6: 50 Conversation of Pathophysiology of Focal hepatic hot spot sign.
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