鼻腔淋巴瘤的CT诊断

目的：探讨原发鼻腔淋巴瘤的CT诊断。材料和方法：回顾性分析34例鼻腔淋巴瘤的CT表现，对肿瘤范围、密度、形态边缘和骨质情况进行分析。结果：肿瘤侵犯外鼻及鼻旁皮下20例、上颌窦17例、筛窦16例、鼻咽12例、眼眶10例、蝶窦7例、额窦4例、对侧鼻腔5例，个别病例侵犯颞下窝、颅前窝、颞窝、上腭和眶下裂。肿瘤分期：一期6例，二期10例，三期16例，四期2例。大多数病例病灶呈弥漫浸润状，边缘不清楚，密度均匀23例，稍不均匀11例，多数呈轻度强化。22例伴有骨质吸收破坏，12例无骨质异常。结论：鼻腔T细胞型淋巴瘤的CT表现具有一定特征，CT对其诊断具有较大的价值。

CT Diagnosis of Lymphoma in Nasal Cavity

Purpose:To investigate the CT diagnosis of lymphoma in nasal cavity.Materials and method:34 cases of lymphoma in nasal cavity were analyzed according to CT manifestations with regard to size,density,shape and margin of the tumor and bone changes.Results:The tumors extended to outer nose and paranasal skin in 20 cases,to maxillary sinus in 17 cases,to ethmoid sinus in 16 cases,to nasopharynx in 12 cases,to orbit in 10 cases,to sphenoid sinus in 7 cases,to frontal sinus in 4 cases,to opposite nasal cavity in 5 cases.In a few cases the tumor invaded infratemporal fossa,frontal skull fossa,temporal fossa,superior palate and infraorbital fissure.There are 6 cases in stage one,10 cases in stage two,16 cases in stage three and 2 cases in stage four.Most tumors had a diffuse infiltrating lesion with an unclear margin.The lesions were homogeneous in 23 cases and slightly inhomogeneous in 11 cases.Most lesions had a slight enhancement in contrast CT scan.22 cases showed bony erosion while 12 cases had no bone change.Conclusion:The T cell lymphoma in nasal cavity has certain characteristics in its CT manifestation.CT examination is valuable in the diagnosis.