Objective    To investigate the multi-slice spiral CT manifestation and diagnostic value for hepatic angiomyolipomas.     Methods    Conventional CT scan and contrast enhanced scans with three phases were performed in 8 cases that were pathologically proved to be hepatic angiomyolipoma.     Results    On precontrast CT images

4 cases contained both soft tissue and adipose tissue component

3 cases  consisted of soft tissue component merely

the last one appeared as adipose mass without soft tissue. The soft tissue component of 8 lesions had been markedly enhanced on the arterial phase

and 6 lesions were hyperdense on portal venous phase and 3 on parenchymal phase. In all the fat-containing lesions

the fat tissue appeared as inhomogeneous enhancement on the three phases

and 3 of them showed marked enhancement on the portal venous phase. On the arterial phase

6 cases showed contorted feeding vessels and the hepatic vein acting as the drainage vessel of the mass could also be seen in 3 lesions on CT contrast scanning. Contrast-enhanced CT scan showed the peripheral rim of mass was markedly enhanced on the portal venous phase scans in 3 cases.     Conclusion    Multi-slice spiral CT may display the imaging features of hepatic angiomyolipomas

which findings will facilitate the differential diagnosis from other hepatic neoplasms before surgery.