An unusual form of adenoma of left lobe of liver was detected fortuito
usly in a young woman with an inflammatory syndrome and an anicteric c
holestasia. In this case, a positive correlation existed between the a
denoma and the treatment with estrogens, the disappearance of the biol
ogic anomalies after exeresis of the adenoma being suggestive of an in
creased production of fibrinogen by hepatocytes. The cholestasia was p
robably the result of pressure exerted by the adenoma. Excision of the
adenoma was justified by the risk of hemorrhagic complications and th
e possibility of malignant changes in the tumor.