MRI Diagnosis of Neurogenic Tumour of Hepatoduodenal Ligament

Objective:To study the MR imaging appearances of neurogenic tumour originating from hepatoduodenal ligament.Methods:3 cases of neurogenic tumour originating from hepatoduodenal ligament proved by surgery and pathology were retrospectively analyzed.Results:All 3 cases were benign neurogenic tumors including neurilemmoma in 2 cases and neurofibroma in 1 case.The MRI findings were solitary,round or oval mass,showing soft tissue signal intensities,which were hyperintense or slightly hyperintense on T2WI and hypointense or slightly hypointense on T1WI,marked enhancement was showed after contrast administration.No enhancement was assessed in the necrosis or cystic areas of the lesions and 1 case mainly showed peripheral rim-like enhancement.The location of tumors were whithin hepatoduodenal ligament,porta hepatis or below the porta hepatis region,above the neck of pancreas;they were well-defined,closely adjacent to or pushing the biliary tract and surrounding blood vessels.Conclusion:MRI is a useful approach for the diagnosis and localization of neurogenic tumour originating from hepatoduodenal ligament,multi-planar imaging is especially meaningful in the differential diagnosis with other lesions originating from biliary tract,liver,pancreas or duodenum.