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• W2031542421 abstract "ObjectiveTo investigate the technical feasibility, safety and clinical significance of using bi-polar radiofrequency ablation(RFA) for treating thyroid cancer recurrence(TCR) in neck lymph nodes(LNs) under contrast-enhanced ultrasound(CEUS) guidance.MethodsFrom March 2006 through December 2008, 34 patients with neck LNs suspicious of TCR 0.7 to 72 months post-thyroidectomies received RFA. Before RFA all patients were assessed through CEUS, 3-D volume calculation and biopsy of LNs. A local anesthesia was delivered. A bi-polar electrode, 19-gauge in diameter, compatible with auto-controlled RF generator was used. Ablation power was 5 watts. Free-hand skills was adopted to introduce electrode into LN under CEUS-guidance. While the LNs were adjacent to CCA or IJV, 10 ml saline was injected into between to separate them for safe introducing.Results113 LNs were ablated and 102 of them were histological papillary thyroid cancer. The maximum diameter and number of the ablated LNs were 5.3 mm to 26.4 mm and 1 to 5 one time respectively. Before RFA 83.3% of the patients had a notable increase in serum TGA while 67.4%,82.2% and 97.5% of the elevated TGA declined at 1, 2, 4 weeks after RFA. CEUS post-RFA demonstrated all the ablated LNs turned into non-enhancement from pre-RFA hyperenhancement. Significant decrease in LNs volume took place since the 6th week post-RFA. There was neither injury to the major blood vessels nor damage to recurrent laryngeal nerve.ConclusionCEUS-guided bi-polar RFA is readily to operate technically and safe electrically. It can be an alternative to surgical resection for neck LN recurrecnce. ObjectiveTo investigate the technical feasibility, safety and clinical significance of using bi-polar radiofrequency ablation(RFA) for treating thyroid cancer recurrence(TCR) in neck lymph nodes(LNs) under contrast-enhanced ultrasound(CEUS) guidance. To investigate the technical feasibility, safety and clinical significance of using bi-polar radiofrequency ablation(RFA) for treating thyroid cancer recurrence(TCR) in neck lymph nodes(LNs) under contrast-enhanced ultrasound(CEUS) guidance. MethodsFrom March 2006 through December 2008, 34 patients with neck LNs suspicious of TCR 0.7 to 72 months post-thyroidectomies received RFA. Before RFA all patients were assessed through CEUS, 3-D volume calculation and biopsy of LNs. A local anesthesia was delivered. A bi-polar electrode, 19-gauge in diameter, compatible with auto-controlled RF generator was used. Ablation power was 5 watts. Free-hand skills was adopted to introduce electrode into LN under CEUS-guidance. While the LNs were adjacent to CCA or IJV, 10 ml saline was injected into between to separate them for safe introducing. From March 2006 through December 2008, 34 patients with neck LNs suspicious of TCR 0.7 to 72 months post-thyroidectomies received RFA. Before RFA all patients were assessed through CEUS, 3-D volume calculation and biopsy of LNs. A local anesthesia was delivered. A bi-polar electrode, 19-gauge in diameter, compatible with auto-controlled RF generator was used. Ablation power was 5 watts. Free-hand skills was adopted to introduce electrode into LN under CEUS-guidance. While the LNs were adjacent to CCA or IJV, 10 ml saline was injected into between to separate them for safe introducing. Results113 LNs were ablated and 102 of them were histological papillary thyroid cancer. The maximum diameter and number of the ablated LNs were 5.3 mm to 26.4 mm and 1 to 5 one time respectively. Before RFA 83.3% of the patients had a notable increase in serum TGA while 67.4%,82.2% and 97.5% of the elevated TGA declined at 1, 2, 4 weeks after RFA. CEUS post-RFA demonstrated all the ablated LNs turned into non-enhancement from pre-RFA hyperenhancement. Significant decrease in LNs volume took place since the 6th week post-RFA. There was neither injury to the major blood vessels nor damage to recurrent laryngeal nerve. 113 LNs were ablated and 102 of them were histological papillary thyroid cancer. The maximum diameter and number of the ablated LNs were 5.3 mm to 26.4 mm and 1 to 5 one time respectively. Before RFA 83.3% of the patients had a notable increase in serum TGA while 67.4%,82.2% and 97.5% of the elevated TGA declined at 1, 2, 4 weeks after RFA. CEUS post-RFA demonstrated all the ablated LNs turned into non-enhancement from pre-RFA hyperenhancement. Significant decrease in LNs volume took place since the 6th week post-RFA. There was neither injury to the major blood vessels nor damage to recurrent laryngeal nerve. ConclusionCEUS-guided bi-polar RFA is readily to operate technically and safe electrically. It can be an alternative to surgical resection for neck LN recurrecnce. CEUS-guided bi-polar RFA is readily to operate technically and safe electrically. It can be an alternative to surgical resection for neck LN recurrecnce." @default.
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• W2031542421 date "2009-08-01" @default.
• W2031542421 modified "2023-09-26" @default.
• W2031542421 title "1288: Bi-Polar Radiofrequency Ablation under Contrast-Enhanced Ultrasound Guidance for Thyroid Cancer Recurrence in Neck Lymph Nodes" @default.
• W2031542421 doi "https://doi.org/10.1016/j.ultrasmedbio.2009.06.672" @default.
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