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Hahn SY, Shin JH, Na DG, Ha EJ, Ahn HS, Lim HK, Lee JH, Park JS, Kim JH, Sung JY, Lee JH, Baek JH, Yoon JH, Sim JS, Lee KH, Baek SM, Jung SL, Kim YK, Choi YJ. Ethanol Ablation of the Thyroid Nodules: 2018 Consensus Statement by the Korean Society of Thyroid Radiology. Korean J Radiol 2020; 20:609-620. [PMID: 30887743 PMCID: PMC6424836 DOI: 10.3348/kjr.2018.0696] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 11/05/2018] [Indexed: 01/10/2023] Open
Affiliation(s)
- Soo Yeon Hahn
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jung Hee Shin
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
| | - Dong Gyu Na
- Department of Radiology, Gangneung Asan Hospital, Gangneung, Korea.,Department of Radiology, Human Medical Imaging and Intervention Center, Seoul, Korea
| | - Eun Joo Ha
- Department of Radiology, Ajou University School of Medicine, Suwon, Korea
| | - Hye Shin Ahn
- Department of Radiology and Thyroid Center, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Hyun Kyung Lim
- Department of Radiology, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Korea
| | - Jeong Hyun Lee
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Jeong Seon Park
- Department of Radiology, Hanyang University College of Medicine, Hanyang University Hospital, Seoul, Korea
| | - Ji Hoon Kim
- Department of Radiology, Seoul National University College of Medicine, Seoul, Korea
| | - Jin Yong Sung
- Department of Radiology and Thyroid Center, Daerim St. Mary's Hospital, Seoul, Korea
| | - Joon Hyung Lee
- Department of Radiology, Haeundae Paik Hospital, Inje University School of Medicine, Busan, Korea
| | - Jung Hwan Baek
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Jung Hyun Yoon
- Department of Radiology, Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jung Suk Sim
- Department of Radiology, Withsim Clinic, Seongnam, Korea
| | - Kwang Hwi Lee
- Department of Radiology, Sheikh Khalifa Specialty Hospital, Ras Al Khaima, UAE
| | - Seon Mi Baek
- Department of Radiology, Haeundae Sharing and Happiness Hospital, Busan, Korea
| | - So Lyung Jung
- Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Yeo Koon Kim
- Department of Radiology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Yoon Jung Choi
- Department of Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University, Seoul, Korea
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Nixon IJ, Angelos P, Shaha AR, Rinaldo A, Williams MD, Ferlito A. Image-guided chemical and thermal ablations for thyroid disease: Review of efficacy and complications. Head Neck 2018; 40:2103-2115. [PMID: 29684251 DOI: 10.1002/hed.25181] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 01/03/2018] [Accepted: 02/20/2018] [Indexed: 01/03/2023] Open
Abstract
Image-guided ablation of thyroid disease is increasingly being commonly reported. Techniques including ethanol injection and thermal ablation using radio-frequency, laser, and microwave devices have been described. Minimally invasive approaches to the management of benign cystic, solid, and functional thyroid nodules as well as both primary and recurrent thyroid malignancy have been reported. The purpose of this article is to review the current evidence relating to image-guided ablation of thyroid disease with a focus on clinical outcomes and complication rates for patients treated with this minimally invasive approach.
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Affiliation(s)
- Iain J Nixon
- Ear, Nose, and Throat Department, NHS Lothian, Edinburgh, UK
| | - Peter Angelos
- Department of Surgery and MacLean Center for Clinical Ethics, The University of Chicago Medicine, Chicago, Illinois
| | - Ashok R Shaha
- Head and Neck Service, Memorial Sloan Kettering Cancer Center, New York, New York
| | | | - Michelle D Williams
- Department of Pathology, Division of Pathology/Laboratory Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Alfio Ferlito
- Coordinator of The International Head and Neck Scientific Group
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Aysan E, Idiz UO, Akbulut H, Elmas L. Single-session radiofrequency ablation on benign thyroid nodules: a prospective single center study : Radiofrequency ablation on thyroid. Langenbecks Arch Surg 2016; 401:357-63. [PMID: 27013327 DOI: 10.1007/s00423-016-1408-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Accepted: 03/14/2016] [Indexed: 10/22/2022]
Abstract
PURPOSE The activity of the application of single-session ultrasonography (US)-guided percutaneous radio frequency ablation (RFA) in benign thyroid nodules was investigated in this prospective clinical study. METHODS RFA treatment was applied to 100 nodules in 100 patients (78 women, 22 men; average age 44.5 years old; age range 18-71) who had euthyroid condition, nodule size larger than 1 cm in the ultrasonography, proven to be benign by fine needle aspiration cytology. The nodules were separated into three groups according to the content: solid, cystic and mixed. In first 73 cases, the process performed under local anesthesia and the other 27 cases were performed under general anesthesia. RFA process was standardized to 70 W in all of the patients, and a moving shot technique was used. The results acquired in the third and sixth months of the controls were evaluated, and the volume of the nodules was screened. RESULTS No differences between the thyroid function tests performed before and after RFA were detected (p > 0.05). The mean volume of the nodules before the process, in the third month after the process, and in the sixth month were 16.8, 4.8, and 2.6 ml, respectively (p < 0.001). The decrease in cystic nodules was greater than solid and mixed structures. Temporary hoarseness occurred in one case and skin edema was detected in a patient at the isthmus. CONCLUSIONS RFA is an option for treatment, with minimal invasiveness and a low complication rate, and it is effective primarily in cases with benign nodules and nodular goiter. In cases with good compliance, the likelihood of success is greater. General anesthesia can be a good option for anxious cases to gather better results.
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Affiliation(s)
- Erhan Aysan
- Department of General Surgery, Bezmialem Vakif University, Faculty of Medicine, Fatih, Istanbul, Turkey
| | - Ufuk Oguz Idiz
- Department of General Surgery, Bezmialem Vakif University, Faculty of Medicine, Fatih, Istanbul, Turkey. .,Sisli Etfal Training and Research Hospital, Department of General Surgery, Istanbul, Turkey.
| | - Huseyin Akbulut
- Department of General Surgery, Bezmialem Vakif University, Faculty of Medicine, Fatih, Istanbul, Turkey
| | - Leyla Elmas
- Department of General Surgery, Bezmialem Vakif University, Faculty of Medicine, Fatih, Istanbul, Turkey
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Fiore F, Del Prete M, Franco R, Marotta V, Ramundo V, Marciello F, Di Sarno A, Carratù AC, de Luca di Roseto C, Colao A, Faggiano A. Transarterial embolization (TAE) is equally effective and slightly safer than transarterial chemoembolization (TACE) to manage liver metastases in neuroendocrine tumors. Endocrine 2014; 47:177-82. [PMID: 24385266 DOI: 10.1007/s12020-013-0130-9] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Accepted: 11/21/2013] [Indexed: 12/24/2022]
Abstract
Liver metastases from neuroendocrine tumor (NET) can be treated by transarterial embolization (TAE) or transarterial chemoembolization (TACE). The goal of TAE and TACE is to reduce blood flow to the tumor resulting in tumor ischemia and necrosis. In this retrospective study, the effectiveness and safety of TAE-TACE in the treatment of liver metastases in patients with NET was compared. Thirty patients with a histologically confirmed gastro-entero-pancreatic NET with liver metastases were retrospectively investigated. Seventeen patients underwent TAE, while 13 patients underwent TACE. Tumor response, degree of devascularization in treated lesions, and progression free survival (PFS) were evaluated in the whole population and then separately in TAE and TACE subgroups. In all patients treated with TAE and TACE, there was a significant size reduction of lesions as compared to baseline. Per lesion reduction was 2.2 ± 1.4 versus 3.3 ± 1.5 cm for TAE (p < 0.001) and 2.2 ± 1.5 versus 3.4 ± 1.7 cm for TACE (p < 0.001). In the whole population, the median PFS for all patients was 36 months (16.2-55.7 CI), without significant difference between TAE and TACE. In no patient did adverse events grade 3 and 4 as well as TAE/TACE-related death occurred, while the post-embolization syndrome occurred in 41 % of patients treated with TAE and 61 % of those treated with TACE. TAE and TACE are both effective in NET patients with liver metastases. TAE should be preferred to TACE in light of its similar anti-tumor effects and slightly better toxicity profile.
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Affiliation(s)
- Francesco Fiore
- Interventional Radiology, National Cancer Institute, Fondazione "G. Pascale", Naples, Italy,
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Spiezia S, Garberoglio R, Milone F, Ramundo V, Caiazzo C, Assanti AP, Deandrea M, Limone PP, Macchia PE, Lombardi G, Colao A, Faggiano A. Thyroid nodules and related symptoms are stably controlled two years after radiofrequency thermal ablation. Thyroid 2009; 19:219-25. [PMID: 19265492 DOI: 10.1089/thy.2008.0202] [Citation(s) in RCA: 184] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Percutaneous radiofrequency thermal ablation (RTA) is a promising new therapeutic approach to manage thyroid nodules (TNs). The aim of this study was to investigate the long-term effectiveness of RTA in inducing shrinkage of TNs as well as in controlling compressive symptoms and thyroid hyperfunction in a large series of elderly subjects with solid or mainly solid benign TNs. METHODS Ninety-four elderly patients with cytologically benign compressive TNs were prospectively enrolled in the study; 66 of them had nontoxic goiter and 28 had toxic or pretoxic goiter. RTA was performed by using a RITA StarBurst Talon hook-umbrella needle inserted in every single TN under ultrasonographic real-time guidance. TN volume, TN-related compressive symptoms and thyroid function were evaluated at baseline and 12 to 24 months after RTA. RESULTS All TNs significantly decreased in size after RTA. The mean decrease in TN volume 12 months after RTA was from 24.5 +/- 2.1 to 7.5 +/- 1.2 mL (p < 0.001), with a mean percent decrease of 78.6 +/- 2.0%. Two years after RTA, a 79.4 +/- 2.5% decrease of TNs size was observed. Compressive symptoms improved in all patients and completely disappeared in 83 of 94 (88%) patients. Hyperthyroidism resolved in most patients allowing methimazole therapy to be completely withdrawn in 79% of patients with pretoxic and toxic TNs (100% with pretoxic TNs and 53% with toxic TNs). The treatment was well tolerated by all patients. No patient needed hospitalization after RTA and no major complications were observed. CONCLUSIONS RTA is an effective and simple procedure for obtaining lasting shrinkage of TNs, controlling compressive symptoms, and treating thyroid hyperfunction. When performed in experienced medical centers, RTA may be a valid alternative to conventional treatments for nontoxic and pretoxic TNs. It is particularly attractive for elderly people for whom surgery and radioiodine therapy are often contraindicated or ineffective.
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Affiliation(s)
- Stefano Spiezia
- Department of Surgery, Ultrasound Guided & Neck Pathologies Surgery Operative Unit, S. Maria del Popolo degli Incurabili ASLNA1 Hospital , Naples, Italy
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Percutaneous Ethanol Injection of Hyperfunctioning Thyroid Nodules: Long-Term Follow-Up in 125 Patients. AJR Am J Roentgenol 2008; 190:800-8. [DOI: 10.2214/ajr.07.2668] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Radiofrequency ablation of benign thyroid nodules: safety and imaging follow-up in 236 patients. Eur Radiol 2008; 18:1244-50. [PMID: 18286289 DOI: 10.1007/s00330-008-0880-6] [Citation(s) in RCA: 319] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2007] [Revised: 12/19/2007] [Accepted: 01/15/2008] [Indexed: 02/07/2023]
Abstract
This study evaluated the safety and volume reduction of ultrasonography (US)-guided radiofrequency ablation (RFA) for benign thyroid nodules, and the factors affecting the results obtained. A total of 302 benign thyroid nodules in 236 euthyroid patients underwent RFA between June 2002 and January 2005. RFA was carried out using an internally cooled electrode under local anesthesia. The volume-reduction ratio (VRR) was assessed by US and safety was determined by observing the complications during the follow-up period (1-41 months). The correlation between the VRR and several factors (patient age, volume and composition of the index nodule) was evaluated. The volume of index nodules was 0.11-95.61 ml (mean, 6.13 +/- 9.59 ml). After ablation, the volume of index nodules decreased to 0.00-26.07 ml (mean, 1.12 +/- 2.92 ml) and the VRR was 12.52-100% (mean, 84.11 +/- 14.93%) at the last follow-up. A VRR greater than 50% was observed in 91.06% of nodules, and 27.81% of index nodules disappeared. The complications encountered were pain, hematoma and transient voice changes. In conclusion, RFA is a safe modality effective at reducing volume in benign thyroid nodules.
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Sakorafas GH, Peros G. Thyroid nodule: A potentially malignant lesion; optimal management from a surgical perspective. Cancer Treat Rev 2006; 32:191-202. [PMID: 16580137 DOI: 10.1016/j.ctrv.2006.02.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2005] [Revised: 01/15/2006] [Accepted: 02/13/2006] [Indexed: 11/25/2022]
Abstract
Thyroid nodules are very common lesions, frequently detected by modern imaging methods (mainly ultrasonography). Despite that most thyroid nodules represent benign lesions, a small but significant percentage of them are malignant. Surgery is indicated when there is underlying malignancy (or suspicion for), pressure symptoms, or for cosmetic reasons. Total/near total thyroidectomy is the most radical procedure, which achieves cure, avoids the possibility of reoperation in the future (completion thyroidectomy), and facilitates postoperative management of the patient with underlying malignancy. Simple observation and thyroid hormone suppressive therapy are acceptable management options for patients with presumably benign thyroid nodules. Radioiodine therapy may be used for the management of patients with hyperfunctioning ("hot") thyroid nodules. Ablation of thyroid nodules (sclerosing therapy [alcohol injection] and laser photocoagulation) have been used for the in situ destruction of thyroid nodules; ablation therapy is currently viewed as experimental therapeutic method. Careful evaluation is required in order to avoid both overtreatment (mainly unnecessary surgery) as well as undertreatment of these potentially malignant, but highly curable lesions.
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Affiliation(s)
- George H Sakorafas
- 4th Department of Surgery, Athens University, Medical School ATTIKON University Hospital, Greece.
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Zieleźnik W, Kawczyk-Krupka A, Barlik MP, Cebula W, Sieroń A. Modified percutaneous ethanol injection in the treatment of viscous cystic thyroid nodules. Thyroid 2005; 15:683-6. [PMID: 16053384 DOI: 10.1089/thy.2005.15.683] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Here we describe a prospective 2-year evaluation of the efficiency of a new procedure of percutaneous ethanol injection (PEI) treatment of viscous thyroid cystic nodules (VTCN). Three patients with VCTN were selected from a group of 22 patients with solitary thyroid cystic nodules. A modified two-stage ethanol injection procedure was planned for these patients. Stage 1 was performed through the injection of a small dose of ethanol into the nodule. The viscosity of the content was reduced within 2 weeks after the injection. In the second stage the nodule was decompressed and an established dose of sterile 95% ethanol was injected. Patients were followed up for 2 years. In all cases a reduction in nodule volume was found. In the following 18 months further reduction was observed, with an average of 91.7%. The effect was stable throughout the follow-up period. No complications were observed. Therefore, our new two-stage PEI procedure appears all efficient alternative approach for the treatment of VCTNs even if further investigations on a larger series are required.
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Affiliation(s)
- Witold Zieleźnik
- Center for Laser Diagnostics and Therapy Chair and Clinic of Internal Diseases and Physical Medicine, Silesian Medical University, Bytom, Poland.
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Pacella CM, Bizzarri G, Spiezia S, Bianchini A, Guglielmi R, Crescenzi A, Pacella S, Toscano V, Papini E. Thyroid Tissue: US-guided Percutaneous Laser Thermal Ablation. Radiology 2004; 232:272-80. [PMID: 15155898 DOI: 10.1148/radiol.2321021368] [Citation(s) in RCA: 118] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
PURPOSE To evaluate in vivo the safety and effectiveness of percutaneous laser thermal ablation (LTA) in the debulking of thyroid lesions. MATERIALS AND METHODS Twenty-five adult patients at poor surgical risk with cold nodules (n = 8), autonomously hyperfunctioning thyroid nodules (n = 16), or anaplastic carcinoma (n = 1) underwent LTA. One to four 21-gauge spinal needles were inserted with ultrasonographic (US) guidance into the thyroid lesions. A 300-microm-diameter quartz optical fiber was advanced through the sheath of the needle. Nd:YAG laser was used with output power of 3-5 W. Side effects, complications, and clinical and hormonal changes were evaluated at the end of LTA and during follow-up. Linear regression analysis was used to investigate the correlation between energy delivered and reduction in nodule volume. Volume of induced necrosis and reduction in nodule volume were assessed with US or computed tomography. RESULTS LTA was performed without difficulties in 76 LTA sessions. After treatment with 5 W, two patients experienced mild dysphonia, which resolved after 48 hours and 2 months. Improvement of local compression symptoms was experienced by 12 of 14 (86%) patients. Thyroid-stimulating hormone (TSH) was detectable in five of 16 (31%) patients with hyperfunctioning nodules at 6 months after LTA. Volume of induced necrosis ranged from 0.8 to 3.9 mL per session. Anaplastic carcinoma treated with four fibers yielded 32.0 mL of necrosis. Echo structure and baseline volume did not influence response. Energy load and reduction in nodule volume were significantly correlated (r(2) =.75, P <.001). Mean nodule volume reduction at 6 months in hyperfunctioning nodules was 3.3 mL +/- 2.8 (62% +/- 21.4 [SD]) and in cold nodules was 7.7 mL +/- 7.5 (63% +/- 13.8). CONCLUSION LTA may be a therapeutic tool for highly selected problems in the treatment of thyroid lesions.
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Affiliation(s)
- Claudio Maurizio Pacella
- Departments of Radiology and Diagnostic Imaging, Ospedale Regina Apostolorum, Via San Francesco 50, 00041 Albano Laziale, Rome, Italy.
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Spiezia S, Vitale G, Di Somma C, Pio Assanti A, Ciccarelli A, Lombardi G, Colao A. Ultrasound-guided laser thermal ablation in the treatment of autonomous hyperfunctioning thyroid nodules and compressive nontoxic nodular goiter. Thyroid 2003; 13:941-7. [PMID: 14611703 DOI: 10.1089/105072503322511346] [Citation(s) in RCA: 97] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE Percutaneous laser thermal ablation (LTA) has been applied in several tumors. In this study we evaluated the safety and long-term efficacy of LTA in the treatment of benign thyroid nodules. DESIGN AND PATIENTS Seven patients with autonomous hyperfunctioning thyroid nodule (group A) and five patients with compressive nodular goiter (group B) were treated with LTA. Up to three needles were positioned centrally in the thyroid nodule and laser fiber was placed in the lumen of the needle. Laser illumination was performed reaching a maximal energy deposition of 1800 J per fiber. MEASUREMENTS Thyroid nodule volume, endocrinologic, and clinical evaluation were performed at baseline, 3, and 12 months after the treatment. Scintigraphy was performed at diagnosis and 12 months after the first session in group A. RESULTS In group A, mean thyroid volume decreased from 3.15 +/- 1.26 mL to 0.83 +/- 0.49 mL (p < 0.001) after 12 months. The treatment induced disappearance of clinical signs and symptoms related to hyperthyroidism; normalization of free triiodothyronine (FT(3)), free thyroxine (FT(4)), and thyrotropin (TSH) serum levels and recovery of extranodular uptake at scintiscan. In group B, mean thyroid volume decreased from 11.14 +/- 4.99 mL to 3.73 +/- 1.47 mL (p < 0.01) after 12 months. Pressure symptoms in the neck, difficulty in swallowing and tracheal displacement improved in all patients. The treatment was well tolerated in both groups of patients. CONCLUSIONS LTA appears to be a valid and safe alternative approach in the treatment of benign thyroid nodules.
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Affiliation(s)
- Stefano Spiezia
- Department of Surgery, Ultrasound Guided & Neck Pathologies Surgery Unit, S. Maria del Popolo degli Incurabili Hospital ASL NA1, Naples, Italy.
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Del Prete S, Caraglia M, Russo D, Vitale G, Giuberti G, Marra M, D'Alessandro AM, Lupoli G, Addeo R, Facchini G, Rossiello R, Abbruzzese A, Capasso E. Percutaneous ethanol injection efficacy in the treatment of large symptomatic thyroid cystic nodules: ten-year follow-up of a large series. Thyroid 2002; 12:815-21. [PMID: 12481948 DOI: 10.1089/105072502760339398] [Citation(s) in RCA: 102] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
We present a prospective study on the long-term efficacy of percutaneous ethanol injection (PEI) treatment of a large series of symptomatic thyroid cystic nodules (STCN). Ninety-eight patients (72 females and 26 males) were treated. The mean basal volume of the STCN was 35.3 mL. In 92 of 98 patients PEI treatment induced a greater than 50% nodule shrinkage, only 6 of 92 responder patients relapsed at a follow-up of 9 years. Moreover, all the patients had a significant clinical benefit because a significant reduction of the cyst-associated symptoms was recorded. Furthermore, a limited number of sessions was required for the treatment of cysts larger than 40 mL (mean +/- standard deviation [SD]: 2.7 +/- 0.75) demonstrating the feasibility of the procedure also in the treatment of large cysts. In conclusion, PEI is an effective and inexpensive procedure with a high patient compliance and long-lasting effects in the treatment of cysts larger than 40 mL.
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Affiliation(s)
- S Del Prete
- Oncology Unit, Ospedale S. Giovanni di Dio di Frattamaggiore, Italy
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