2024年5月16日 · Hypervascular liver lesions are findings that enhance more or similarly to the background hepatic parenchyma in the late arterial phase, on contrast-enhanced CT or MRI.

Types of benign liver lesions include: Liver hemangioma, the most common benign liver lesion. It occurs in up to 5% of adults and consists of abnormal blood vessels. Focal nodular hyperplasia, which often develops in women and has a scar-like appearance. Liver adenoma, a …

2006年7月15日 · Hypervascular lesions. Arterially enhancing lesions are mostly benign lesions and include primary liver tumors as FNH, adenoma and small hemangiomas that fill rapidly with contrast.

If the liver is normal, the most common causes of hypervascular liver lesions are hemangioma, focal nodular hyperplasia (FNH), adenoma, and hypervascular metastasis. In the presence of chronic liver disease, the likely causes include vascular shunts (transient hepatic enhancement difference [THED]), regenerative nodules, dysplastic nodules, and ...

It is safe to observe hypervascular liver lesions in normal liver in patients up to 45 years, normal alanine aminotransaminase, up to three nodules and no personal history of cancer. Lesion biopsies are safe in patients with atypical lesions and define the treatment to be established for most of these patients.

Vascular liver lesions often appear hypervascular because they tend to follow the enhancement of the blood pool; these include hemangiomas, arteriovenous malformations, angiosarcomas, and peliosis.

HAC and PVC calculated from triphasic liver CT examinations can be used to classify hypervascular liver lesions. These coefficients improve the specificity for diagnosing malignancy in liver lesions, when combined with traditional relative enhancement criteria (such as washout).

Hepatobiliary MRI contrast agents are increasingly being used for liver imaging. In clinical practice, most focal liver lesions do not uptake hepatobiliary contrast agents. Less commonly, hepatic lesions may show variable signal characteristics on hepatobiliary phase.

2009年10月1日 · The temporal evolution, internal architecture, and clinical setting of hypervascular liver lesions on multiphasic CT and MRI provide important information for differential diagnoses.

Common hypervascular liver lesions include hemangioma, focal nodular hyperplasia, hepatocellular adenoma, hepatocellular carcinoma, fibrolamellar carcinoma, and metastases from primary tumors such as islet cell tumor, carcinoid, renal …