A Restudy Of Radiological Manifestation Of Primary Small Intestinal Lymphoma

Small intestinal lymphoma can be divided into two types,primary small intestinal lymphoma and generalized lymphoma involving the small intestine.The latter is relatively more common in clinical work.Primary small intestinal lymphoma(PSIL)refers to a malignant tumor which originates in the lymphoid tissue of the small intestine.The main pathological types include diffuse large B-cell lymphoma,MALT lymphoma,follicular lymphoma,non-specific T-cell lymphoma,monomorphic epithelial intestinal T-cell lymphoma,ALK-1 negative anaplastic large cell lymphoma and so on.The clinical manifestations and laboratory tests of PSIL are nonspecific,and there is a variety of different imaging features,so clinical diagnosis of PSIL is often a great challenge.According to the morphological features of imaging,some previous researches and literatures classified the imaging findings of PSIL into the following 7 types: infiltration type,luminal aneurismal dilatation type,mesentery type,polypoid mass type,intra-and extra-intestinal mass type,mixed type,and diffuse ileal jejunalization type.This way of classification is classic and intuitive,but with so many categories,its applicability in clinical work is limited.In this study,we retrospectively analyzed the CT and MRI images of PSIL,dividing imaging features of PSIL into two categories: typical ones and atypical ones,and exploring the radiological characteristics of PSIL with different pathological types.Cases with typical imaging findings are more easy for doctors to make corresponding imaging diagnosis,while those with atypical imaging findings require further differential diagnosis.