Đang chuẩn bị nút TẢI XUỐNG, xin hãy chờ
Tải xuống
Đồng thời, việc sử dụng nội soi ổ bụng dẫn đến bệnh tật giảm cho các bệnh nhân trải qua phẫu thuật extirpative thận. Nội soi ổ bụng một phần nephrectomy là một lựa chọn hữu hiệu đối với bệnh nhân một cách thích hợp được lựa chọn [5]. Tuy nhiên, cầm máu cắt bỏ khối u sau đây vẫn còn là một thách thức đang diễn ra. | 86 A. Hacker et al. acceptance as an alternative to radical nephrectomy for treatment of renal tumors less than 4 cm in diameter 3 4 . At the same time the use of laparoscopy has resulted in decreased morbidity for patients undergoing renal extirpative surgery. Laparoscopic partial nephrectomy is a viable option in appropriately selected patients 5 . However hemostasis following tumor excision remains an ongoing challenge. In an effort to optimize hemostasis in nephron-sparing minimally invasive surgery as well as to further decrease the invasiveness of renal surgery through the use of percutaneous techniques energy-based ablation techniques such as cryoablation radiofrequency ablation RFA interstitial laser ablation microwave thermotherapy and high-intensity focused ultrasound HIFU have been introduced. Furthermore patients who are poor surgical candidates and those with hereditarily based renal tumors who are at risk for multiple renal operations would benefit from a less invasive treatment modality that avoids surgical morbidity and potentially better preserves renal function. HIFU has the potential to be the least invasive of the currently available tumor-ablation methods since an energy source does not need to be introduced directly into the tumor. The present chapter addresses the current literature on experimental and clinical application of HIFU for noninvasive treatment of renal tumors. What Is HIFU High-intensity focused ultrasound HIFU is also known as pyrotherapy ultrasound ablation and focused ultrasound surgery. The aim of this technique is contactless destruction of defined parts of an organ by extracorporeally applied ultrasound energy. If the ultrasound beam carries sufficient energy and is brought into a tight focus within the body the energy within the focal volume can cause a local rise in temperature resulting in a sharply demarcated thermal tissue necrosis a lesion . Surrounding or overlying tissues are not damaged. The ability to cause cell .
