CT features of primary hepatic neuroendocrine carcinoma in 5 cases

Objective: To summarize the CT features of primary hepatic neuroendocrine carcinoma and improve its recognition. Methods: CT features of 5 cases with primary hepatic neuroendocrine carcinoma confirmed by pathology were retrospectively analyzed by combining with the literature data. Results: Multiple tumors in 4 cases,the features of which were cystic-solid lesions at different sizes and single tumor in 1 case were found. CT scanning showed low density placeholder with clear boundary in liver and more irregular low density area in the center of lesion. The single tumor was cystic lesion. Early mild-to-moderate strengthening in the solid part of tumor,mild strengthening during portal vein period and delay period and no obvious strengthening in more low density areas of center were found by CT enhancement scanning. Conclusions: The CT features of primary hepatic neuroendocrine carcinoma have certain characteristics,which has certain value on its diagnosis and differential diagnosis.