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Spots Global Cancer Trial Database for HIFU Reapplication in Benign Nodules

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Trial Identification

Brief Title: HIFU Reapplication in Benign Nodules

Official Title: Efficacy and Safety of High Intensity Focused Ultrasound (HIFU) Reapplication in Benign Thyroid Nodules That Had Less-than Adequate Shrinkage Following Single-session HIFU Treatment.

Study ID: NCT03331172

Conditions

Thyroid Nodule

Interventions

Echopulse

Study Description

Brief Summary: High Intensity Focused Ultrasound (HIFU) is a new approach in treating benign thyroid nodule without surgery. It is proven effective and safe relative to traditional surgery. From previous HIFU studies, it caused shrinkage of thyroid nodule up to 70% from original size. Unfortunately, 5-10% of nodule do not shrink. Those which do not shrink are usually large in size and therefore a second HIFU treatment may help. This study is going to evaluate the efficacy and safety of reapplication HIFU after the first single HIFU session in 6 months. The study will be carried out in the following steps: 1. Recruit subject from the clinic according to the study criteria. 2. Arrange the reapplication HIFU treatment within 3 months. 3. Arrange 4 visits after the HIFU treatment in Post 7 days, Post 1 month, Post 3 months, and Post 6 months; Data collection will be in these 4 visits through the questionnaire or interview by research assistant 4. The subjects will have further health management with the same team after the study.

Detailed Description: Thyroid nodules are common and although most are benign and remain relatively static in size, some can grow and become large and cause local symptoms over time. In such scenario, thyroidectomy is usually indicated. However, surgery is not only associated with complications but also with high cost and general anesthesia. As a result, there has been a growing interest in exploring less invasive, non-surgical technique for benign thyroid nodules. For solid or predominantly-solid (\<30% cystic areas) thyroid nodules, thermal ablation techniques have been shown to be highly effective in causing nodule shrinkage and alleviating symptoms in the long-term. To date, numerous thermal ablation techniques have been described and they include radiofrequency ablation (RFA), percutaneous laser ablation (PLA), microwave ablation and more recently, high intensity focused ultrasound (HIFU). HIFU is now considered the least invasive technique as there is no need for needle insertion into the target lesion during treatment. It works by utilizing focused ultrasound energy to generate heat and induce thermal ablation beneath the skin and other tissue layers. Recent studies (including several from our group) have shown that it is effective in not only inducing significant nodule shrinkage but also in alleviating nodule-related symptoms. However, despite its overall success, approximately 10 - 15% of solid or predominantly solid nodules do not shrink adequately (i.e. \<50% shrinkage from baseline in the first 6-12 months). Although the exact reason why some nodules do not respond remains unclear, it is noted that the majority of these less responsive nodules are larger in size / volume and so, a second or reapplication of ablation might be required to cause further shrinkage and improvement in symptoms \[11\]. However, the role of HIFU reapplication in nodules with less-than-adequate response (\<50% at 6 months) remains undefined. As a result, the present study is aimed to the feasibility and safety of HIFU reapplication in nodules with shrinkage \<50% of baseline volume 6 months after single-session HIFU treatment.

Eligibility

Minimum Age: 19 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: No

Locations

Queen Mary Hospital, Hong Kong, , Hong Kong

Contact Details

Name: Hung Hin, Brian Lang, MBBS (Hons)

Affiliation: The University of Hong Kong

Role: PRINCIPAL_INVESTIGATOR

Useful links and downloads for this trial

Clinicaltrials.gov

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