腹膜后局限型巨大淋巴结增生症的CT诊断

目的分析腹膜后巨大淋巴结增生的CT图像特点,提高对该病的认识。方法回顾性分析4例经病理证实的腹、盆部腹膜后巨大淋巴结增生的CT表现并复习相关文献。结果 3例位于腹主动脉旁、1例位于盆部腹膜后,病例均为局限型,平扫所有病灶均表现为边缘清晰软组织肿块,与肌肉相比呈等密度,直径在3cm～7cm之间,增强扫描病变在动脉期和延迟扫描均持续高度强化,强化程度呈与邻近的腹主动脉或髂血管同步的特征。利用VR重建技术直观显示肿块,并可见增粗、迂曲的供血血管。病理诊断均为透明血管型巨大淋巴细胞增生症。结论局限型巨大淋巴结增生症的CT增强扫描有一定的影像学特征,结合临床表现,可提高术前诊断率。

CT Diagnosis of Localized Castleman Disease of Retroperitoneal

Objective To analyse the CT characteristics of castleman disease （CD） of retro- peritoneal and improve recognition of this disease. Methods CT findings in 4 cases with castleman disease confirmed by pathology were retrospectively analyzed. Then review literatures so as to improve the diagnosis and treatment of CD. Results The lesions located around the aorta abdominalis in 3 cases, I case of pelvic and post-peritoneum.All lesions found well-circumscribed soft tissur-attenuating masses, were homogeneous density, equidensity as muscle. The diameter of these lesions ranged from 3 to 7 cm. All cases obviously enhancing in the arterial phase and portal phase, were enhanced medially or markedly as aorta abdominalis. Using the VR techonology to reveal the lesions,and some increased vessles were revealed. All pations were diagnosed as hyaline-vascular type of giant lymph node hyperplasia. Conclusion Castleman disease lack of characteristic clinical manifestations,Marked enhancement after contrast administration are most important and specific findings in definite diagnosis of localized castleman diseases.