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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 cause of liver hemangiomas remains unknown; however, it may have congenital and genetic components. [5] They are not known to become malignant based on the available existing literature. [5] Liver hemangiomas do not usually cause symptoms. [2] [5] They are usually small, with sizes up to 10 centimeters. [5] Their size tends to remain stable ...
Cavernous hemangiomas are erroneously called the most common benign tumors of the liver. [14] Usually one malformation exists, but multiple lesions can occur in the left or right lobe of the liver in 40% of patients. [3] Their sizes can range from a few millimeters to 20 centimetres. Those over 5 cm are often referred to as giant hemangiomas. [3]
A cavernous liver hemangioma or hepatic hemangioma is a benign tumour of the liver composed of hepatic endothelial cells. It is the most common liver tumour, and is usually asymptomatic and diagnosed incidentally on radiological imaging. Liver hemangiomas are thought to be congenital in origin. [10]
Hepatic hemangiomas are the most common site for internal organ damage. Hepatic hemangiomas may be difficult to identify, because it can be inaccurately diagnosed as a hyper-vascular malignancy. These malignancies can live alongside other liver tumors such as hepatic cysts, hepatic angiosarcoma, focal nodular hyperplasia, and a myriad of others.
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 ...
Infantile hemangiomas in the liver are found in 16% of all liver hemangiomas. Its sizes are usually less than 1 to 2 cm in diameter. It may show a "flash-filling" phenomenon in which there is a fast enhancement of the contrast material in the lesion instead of slow, centripetal, nodular filling of the lesions in usual hemangiomas.
Infantile hemangiomas are the most common type of vascular tumor to affect babies, [4] accounting for 90% of hemangiomas. [5] They are characterised by the abnormal proliferation of endothelial cells and of deviant blood vessel formation or architecture. [6] Hypoxic stress seems to be a major trigger for this. [7]