Analysis of CT and MRI features of primary gastrointestinal lymphoma

YANG Chao-wu; HE Guang-wu; LI Zheng-yu; ZHAO Bing-hui

Journal of China Clinic Medical Imaging ›› 2015, Vol. 26 ›› Issue (1) : 23-26.

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Analysis of CT and MRI features of primary gastrointestinal lymphoma

YANG Chao-wu1, HE Guang-wu2, LI Zheng-yu2, ZHAO Bing-hui3

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Abstract

Objective: To investigate CT and MRI features of primary gastrointestinal lymphoma in order to increase the diagnostic rate and accuracy and further provide evidence for clinical treatment. Methods: CT and MRI data from 32 patients with gastrointestinal lymphoma in recent 6 years in our hospital were retrospectively analyzed. All definite diagnosis was from endoscopy or pathology. Results: CT revealed that the thickening gastric wall had homogeneous density and broad base. The percent of mucosa with white lines in arterial phase was 87.5% and 3 layers with mucosa, tumor and serosa in venous phase was 81.3%. MRI had unique advantage in displaying mucosa and serosa on T1WI and T2WI. The intestinal lymphoma was characteristic of multi-segmental wall thickening in an annular way with mild to moderate enhancement. Aneurysm-like intestinal dilatation was common. Colonic dilatation could be detected with effusion and gas but intestinal obstruction was rare. A mass was usually formed with gas inside and secondary intestinal obstruction often happened when ileocecus, especially the ileum or ascending colon was involved. Regional lymph nodes were often involved in primary gastrointestinal lymphoma, commonly in the corresponding drainage area. Conclusion: CT and MRI could reveal the pathological feature and infiltration of surrounding tissue for primary gastrointestinal lymphoma clearly. Typical CT and MRI signs have great value in qualitative diagnosis.

Key words

Gastrointestinal neoplasms / Lymphoma / Tomography / spiral computed / Magnetic resonance imaging

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YANG Chao-wu;HE Guang-wu;LI Zheng-yu;ZHAO Bing-hui. Analysis of CT and MRI features of primary gastrointestinal lymphoma[J]. Journal of China Clinic Medical Imaging. 2015, 26(1): 23-26