[Primary malignant neoplasms of the liver. Contribution of echography to the preoperative diagnosis].

Primary malignant hepatic tumors are relatively common and the possibility of radical surgical treatment in the initial stages has modified our clinical approach therefore stressing the validity of a correct screening and follow-up of this pathology. The Authors present their clinical experience in the field enriched by the use of ultrasonography and conclude that this represents a highly effective diagnostic technique whereas it is less reliable in the determination of the nature of the lesion.