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Liver tumors (also known as hepatic tumors) are abnormal growth of liver cells on or in the liver. Several distinct types of tumors can develop in the liver because the liver is made up of various cell types. [1] Liver tumors can be classified as benign (non-cancerous) or malignant (cancerous) growths.
Benign liver tumors generally develop on normal or fatty liver, are single or multiple (generally paucilocular), have distinct delineation, with increased echogenity (hemangiomas, benign focal nodular hyperplasia) or absent, with posterior acoustic enhancement effect (cysts), have distinct delineation (hydatid cyst), lack of vascularization or show a characteristic circulatory pattern ...
Hepatocellular adenoma (also known as hepatic adenoma or hepadenoma) is a rare, benign liver tumor. It most commonly occurs in people with elevated systemic levels of estrogen , classically in women taking estrogen-containing oral contraceptive medication.
Certain benign liver tumors, such as hepatocellular adenoma, may sometimes be associated with coexisting malignant HCC. Evidence is limited for the true incidence of malignancy associated with benign adenomas; however, the size of hepatic adenoma is considered to correspond to risk of malignancy and so larger tumors may be surgically removed.
Other patterns include telangiectatic, hyperplastic-adenomatous, and lesions with focal large-cell dysplasia. [4] Rarely, these lesions may be multiple or can occur as part of a syndrome with hemangiomas, epithelioid hemangioendothelioma, hepatic adenomas, fibrolamellar hepatocellular carcinoma, vascular malformations of the brain, meningiomas ...
A cavernous liver hemangioma or hepatic hemangioma is a benign tumor of the liver composed of large vascular spaces lined by monolayer hepatic endothelial cells. It is the most common benign liver tumour, and is usually asymptomatic and diagnosed incidentally on radiological imaging or during laparotomy for other intra-abdominal issues.
The reason the majority of intrahepatic cholangiocarcinomas are not able to be surgically removed is because there are often multiple focal tumors within the liver. [70] After surgery, recurrence rates are up to 60%. [71] [72] Liver transplant may be used where partial resection is not an option, and adjuvant chemoradiation may benefit some ...
Polycystic liver disease (PLD) usually describes the presence of multiple cysts scattered throughout normal liver tissue. [1] PLD is commonly seen in association with autosomal-dominant polycystic kidney disease , with a prevalence of 1 in 400 to 1000, and accounts for 8–10% of all cases of end-stage renal disease . [ 2 ]