Abstract
We have previously categorised of degeneration of the collecting lymphatic vessels into four types: normal, ectasis, contraction and sclerosis type (NECST classification). Herein, we evaluated the collecting lymphatic vessels in lymphoedema-affected limbs using ultrasonography. In step 1, we investigated 110 lymphatic vessels from 25 patients with lymphoedema, who underwent lymphatic-venous anastomosis (LVA) following preoperative ultrasonography. We classified the lymphatic vessels using the NECST classification during intraoperative microscopic observation. Post-operatively, we evaluated the preoperative ultrasonographic images and identified the lymphatic vessels. In step 2, we investigated 79 lymphatic vessels from 17 patients. We performed ultrasonography and detected the lymphatic vessels preoperatively and compared the results with the intraoperative findings. This study is not blinded. In step 1, normal-type lymphatic vessels were observed as spicular and flat hypo-echoic lesions on ultrasonography. Ectasis-type lymphatic vessels appeared as a rounded hypo-echoic region and coloured on Doppler imaging once in 20-30 s. Contraction-type lymphatic vessels appeared as a small hypo-echoic region in the centre of the hyper-ec...Continue Reading
Citations
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