咽淋巴环淋巴瘤的影像学诊断及鉴别

目的：探讨咽淋巴环淋巴瘤的CT及MRI表现，以提高诊断及鉴别诊断的准确性。方法：回顾性分析15例经病理证实、临床影像资料完整、原发于咽淋巴环淋巴瘤的CT及MRI表现。结果：病理均为非霍奇金淋巴瘤，B细胞来源10例，NK细胞或T细胞来源占5例。7例腭扁桃体淋巴瘤表现为扁桃体窝内边界清楚的类圆形软组织肿块，向咽腔内突出生长，5例为双侧受累；8例鼻咽及鼻腔淋巴瘤均表现为鼻咽腔内弥漫生长的软组织肿块，病变范围较大，向周围呈弥漫性生长，可累及邻近鼻甲及鼻窦骨质骨无颅底受侵；CT表现为均匀软组织密度肿块与周围界限清楚，MRI上T1WI呈与邻近肌肉组织相似的等密度，T2WI及DWI呈稍高密度，信号均匀，呈轻中度强化，无坏死和囊变；15例淋巴瘤中有10例同时可见双侧颈部淋巴结肿大。结论：咽淋巴环淋巴瘤以非霍奇金淋巴瘤多见，CT、MRI表现其密度、信号、边缘及强化特点有一定特征，需与结核、鼻咽癌及扁桃体癌等鉴别；CT、MRI能清楚显示肿瘤位置、形态、范围及有无颈部淋巴结肿大和周围组织的侵犯，对临床诊断和治疗有重要指导价值。

Imaging and differential diagnosis of lymphoma in Waldeyer's ring

Objective: To study CT and MRI features of lymphoma in Waldeyer's ring,in order to improve the accurate diagnosis and differential diagnosis.Methods: The CT and MRI data of 15 cases of non-Hodgkin's lymphoma in Waldeyer's ring,proven pathologically and clinically were studied retrospectively.Results: Pathology showed all cases were non-Hodgkin's lymphoma,including 10 cases from B cells,and 5 cases from NK cells or T cells.Seven cases of palatal tonsil lymphoma showed round soft tissue mass with clear border...