The lesion consists of variable sized vascular spaces lined by attenuated endothelial cells. Intervening fibrosis is present in the stroma.
Cavernous hemangioma is the most common primary hepatic tumor, arising from endothelial cells of blood vessels. Occur most frequently in middle-age women. Incidental finding, but during pregnancy (or with estrogen therapy), these lesions can enlarge rapidly. Focal nodular hyperplasia and cavernous hemangiomas can occur in conjunction and may be associated (1).
None necessary; if symptomatic (pain, rupture), surgical excision would be appropriate.
Excellent. Usually an incidental finding.
(1)Foundations in Diagnostic Pathology