Head and Neck Imaging

The CT/MRI Findings and Pathological Analysis of Primary Hepatic Lymphoma

Author:GUAN Bin, ZHONG Tang-li, LIU Qi-yu, et al.

affiliation:Department of Radiology, Mianyang Central Hospital, Mianyang 621000, Sichuan Province, China

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Abstract

Objective To analyze CT and MRI findings of primary hepatic lymphoma (PHL) and compare with the pathological results for improving its recognition and diagnostic accuracy. Methods 8 patients with PHL confirmed by pathology of operation, CT or ultrasound guided puncture were reviewed retrospectively. 7 cases were perfomed CT, 5 cases were perfomed MRI and 4 cases were perfomed CT and MRI. CT and MRI findings of PHL were analyzed. Results In all 8 PHL cases, 7 cases presented solitary lesion, 1 case presented multiple lesions. Unenhanced CT showed hypodense lesions in all cases, Most of the density were uniform and the boundary were clear; On MR T1WI imaging, all lesions were presented as hypointensity, on MR T2WI imaging, all lesions showed hyperintense, on MR DWI imaging, all lesions showed distinctive hyperintense. Enhanced CT and MRI showed no evident enhancement or slight to moderate enhancement, 1 case had irregular necrosis. Blood vessel traverse lesions and the vessels were not narrowed and encircled in 4 cases. 1 case of isolated lesions showed segmental distribution of liver and were misdiagnosed as fatty liver, the multiple lesions misdiagnosed as metastatic tumor. Pathology confirmed diffuse large B cell lymphoma in 7 cases, small lymphocytic lymphoma in 1 case. Conclusion PHL were confirmed hypo-vascular tumor. Blood vessel traversing lesions without narrowing or encircling may be a characteristic sign. Combined with clinical information, the diagnostic accuracy of PHL could be improved.

【Keyword】Lymphoma; Liver; Tomography; MRI

【Chart number】R445.2;R445.3;R735.7

【Document Identification Number】A

【DOI】 10.3969/j.issn.1672- 5131.2018.02.001