three hyperplastic nodules in the cirrhotic liver and three cavernous hemangiomas were also invisible because of the lesions being embedded in the liver parenchym . the sonographic examination proved to be a useful method not only for knowing the exact localization of invisible tumors but also for preventing vascular injury at subsegmental or segmental resection of the liver .
C0018920
cavernous hemangiomas
C0005847
vascular