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| The diagnostic value of multimodal imaging using CT, MRI and 18F-FDG PET-CT for
extranodal lymphoma of the abdomen and pelvic |
| ZHOU Jun-fen1, XIA Liang1, LIU Chun-bao1, YAN Wei-peng2, LU Di-yu1 |
| 1． Department of Nuclear Medicine, the Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, China; 2． Department of Radiology, Hubei Cancer Hospital, Wuhan 430079, China |
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Abstract Objective: To explore the multimodal imaging features of extranodal lymphoma of the abdomen and pelvic and evaluate the diagnostic value． Methods: The clinical data and imaging features of CT, MRI and PET-CT of 97 cases with extranodal lymphoma confirmed by surgery and pathology were analyzed retrospectively. Results: The locations of 97 patients with extranodal lymphoma of the abdomen and pelvic included gastrointestinal tract, liver, pancreas, spleen, kidney and adrenal gland and bladder. Non-hodgkin lymphoma(NHL) was more common than Hodgkin’s lymphoma(HD). The most common histological subtypes were large b-cell lymphoma and follicular lymphoma. T-cell lymphoma was also more common. CT examination showed homogeneous density, MRI examination appeared uniform hypo or isointensity signal. Most showed low to middle degree dynamic delayed enhanced. Extranodal lymphoma of the abdomen and pelvic usually remained intrinsic anatomic structures. The lesion uptake of 18F-FDG was significantly higher, which showed nodular or mass sample radioactive concentration． When the necrosis was found in extranodal involvements, necrosis would form a circular-like 18F-FDG uptake increased foci． Conclusion: The CT, MRI combined with 18F-FDG PET-CT imaging features of extranodal lymphoma of the abdomen and pelvic have typical characteristic. It is important to recognize the imaging appearance of extranodal lymphoma to improve diagnostic accuracy. The final diagnosis depends on the pathology.
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Received: 29 August 2019
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