Fine needle aspiration cytology of liver tumors.

Fine needle aspiration cytology has undergone increasing utilization in the evaluation of hepatic neoplasms. Experience with liver aspirates has demonstrated that problems in differential diagnosis require thorough understanding of criteria for distinguishing different tumor types. The present report describes the cytologic presentation of primary and metastatic hepatic tumors with emphasis on characteristic nuclear and cytoplasmic features encountered in fine needle aspiration biopsy specimens.