Liu N, Wang C, Ding Y
Department of Plastic Surgery, Chang Zheng Hospital, Shanghai 200003.
Zhonghua Zheng Xing Shao Shang Wai Ke Za Zhi. 1999 Nov;15(6):447-9.
To investigate the features of chronic lymphedema of the extremity.
Magnetic resonance imaging (MRI) and lymphangioscintigraphy (LAS) examinations were performed on 12 patients with peripheral lymphedema.
MRI characteristically showed diffusive subcutaneous edema, reticular lymphangiectasis and "channels" with sequestered lymph. MRI scan clearly displayed the proliferative and extended lymphatic vessels, trunks and chylocyst. LAS showed dermal diffusion (dermal backflow) or retention at the injection site of the tracer with poorly defined lymphatic trunks and delayed or no visualization of regional lymph nodes.
MRI can visualise peripheral lymph trunks, lymph nodes and soft tissue. LAS is more helpful in ascertaining the condition of obstruction of lymphatic system. Using these two imaging modalities together is helpful for anatomical diagnosis and delineating the disarranged pattern of lymphedema.
探讨肢体慢性淋巴水肿的特征。
对12例周围性淋巴水肿患者进行磁共振成像（MRI）和淋巴管闪烁造影（LAS）检查。
MRI的特征性表现为弥漫性皮下水肿、网状淋巴管扩张以及含潴留淋巴液的“通道”。MRI扫描清晰显示了增生和扩张的淋巴管、淋巴干和乳糜囊肿。LAS显示示踪剂在注射部位有皮肤扩散（皮肤回流）或潴留，淋巴管主干显示不清，区域淋巴结显影延迟或未显影。
MRI可显示周围淋巴干、淋巴结及软组织情况。LAS对确定淋巴系统梗阻情况更有帮助。联合使用这两种成像方式有助于解剖学诊断并描绘出淋巴水肿的紊乱模式。
