CT and MRI diagnosis of primary hepatic neuroendocrine carcinoma

Objective:To study the value of CT and MRI in the diagnosis of primary hepatic neuroendocrine carcinoma(PHNEC).Methods:The CT and MRI materials of seven cases with pathology proved PHNEC were retrospectively analyzed.The imaging features were studied.Results:Of the seven cases,altogether ten lesions were revealed,single lesion was found in 5cases,multiple lesions were found in 2cases.The location was right hepatic lobe(6lesions),left lobe(2lesions)and 2large lesions seated across right and left lobe of liver.The diameter of the masses ranged from 1.0cm to 13.0cm,intratumoral liquefaction,necrosis or cystic change could be revealed in 8lesions.Marked enhancement could be seen in the solid parts of tumors in arterial phase,kept consistent in portal venous phase,no enhancement was assessed in the necrosis and cystic components.Two lesions with small size didn't have necrosis or cystic component,showing marked enhancement in arterial phase and remained isointense in portal venous phase.Conclusion:Certain CT and MRI characteristics could be revealed in PHNEC,and is useful for the diagnosis before surgery.