Abstract: Objective To summarize the imaging features of solitary necrotic nodules of liver （SNNL）. Methods The imaging data of 43 patients with SNNL in our hospital between March 2013 and March 2017 were retrospectively analyzed. The abdominal MRI scan and enhanced examination were performed to observe the imaging features. Results In 43 SNNL lesions,the diameter was（2.8±0.4） cm,with 38 lesions less than and 5 greater than 3 cm;39 were a single focci and 4 were fusion lesions;36 lesions were located in the right,and 7 in the left lobe of the liver;34 lesions were superficial,and 9 were deep lesions;27 lesions were irregular,while 16 were round or round-like;32 lesions showed low signal intensity,6 showed slightly low signal intensity,and 5 lesions showed iso-signal intensity on T2WI;there were 2 lesions with slightly high signal intensity,and 39 lesions with isointensity on T2WI;21 lesions with equal signal intensity and 22 lesions with high signal intensity or slightly hyperintense signal intensity on DWI sequences;in 43 cases,no enhancement was found in the lesions after enhanced scanning. Conclusions MRI plain scan and dynamic contrast enhancement might provide relatively special imaging feature of SNNL,by which the clinicians could make decision for proper management in this setting.

Key words: Solitary necrotic nodules of liver, MRI, imaging features, Diagnosis