Objective:

To investigate the CT and MRI findings of primary hepatic neuroendocrine carcinoma (PHNEC) and its differential diagnosis.

Methods:

The data of CT and MR images of 2 cases with pathologically proved PHNECwere retrospectively analyzed.

Results:

One case with a single mass in the right hepatic lobe showed heterogeneous hypodense with intratumoral cystic degeneration on CT. The solid component was enhanced moderately in arterial phase and declined in portal venous phase. The mass with hypointensity on T1-weighed imaging (T1WI) and hyperintensity on T2-weighed imaging (T2WI) was shown on MRI. The other case had a dominant mass surrounded by satellite nodules and showed hypodense on non-enhanced CT. The masses were enhanced slightly in arterial phase and declined i

n portal venous phase.

Conclusion:

Slight to moderate enhancement in arterial phase and decline in portal venous phase was observed in PHNEC. Intratumoral cystic degeneration and dominant mass with satellite nodules might be the features.