Abstract
Background/aim This study aimed to evaluate the clinical efficacy of radiofrequency ablation (RFA) and cryotherapy and to scrutinize the therapeutic success of the RENAL (radius, exophytic/endophytic, nearness to collecting system, anterior/posterior, and location) nephrometry score in terms of possible complications and the predictive status of oncological results.Materials and methodsForty-five patients with biopsy-proven renal cell carcinomas (32 males, 13 females) treated with RFA and cryotherapy were included. Patients were 22–90 years old (average: 59.2 years). Statistical analyses were performed using SPSS for Windows. Results A total of 79 lesions with dimensions varying between 0.9 and 4.5 cm (average: 2.2 cm) were ablated. Complete ablation was achieved for 72 (91.1%) lesions. Six repeat RFA sessions were applied for 4 (5%) lesions with residue/recurrence. The average RENAL nephrometry scores of lesions that underwent complete ablation and those that developed residue/recurrence were 6.3 and 7.7, respectively. The average recurrence-free survival time was 34.8 months (range: 3–55 months), while it was 44.6 months (range: 6–55 months) for cryotherapy and 28.6 months (range: 3–50 months) for RFA.ConclusionsAblative therapies are minimally invasive and effective methods for treating small renal tumors. RENAL nephrometry scoring is a valuable system for standardizing renal tumors and evaluating the success of ablative therapies, possible complications, and oncological results.
Highlights
As the common use of ultrasonography (US) and crosssectional imaging methods such as computed tomography (CT) and magnetic resonance imaging (MRI) has intensified, it has become increasingly common to identify small renal masses incidentally [1]
RENAL nephrometry scoring is a valuable system for standardizing renal tumors and evaluating the success of ablative therapies, possible complications, and oncological results
* Correspondence: sedaladag@gmail.com In radiofrequency ablation (RFA), the target lesion is ablated with coagulation necrosis using heat generated from high-frequency alternating current obtained by uninsulated electrode tips [5,6]
Summary
As the common use of ultrasonography (US) and crosssectional imaging methods such as computed tomography (CT) and magnetic resonance imaging (MRI) has intensified, it has become increasingly common to identify small renal masses incidentally [1]. Due to the high rate of survival in patients with localized renal cell tumors, minimally invasive ablative treatment methods are of interest as potential therapeutic methods. The most popular methods are radiofrequency ablation (RFA) and cryotherapy [2,3]. In addition to treating renal masses, including liver, lung, bone, and soft tissue lesions, have a wide range of clinical use with increasing number of indications [4]. In RFA, the target lesion is ablated with coagulation necrosis using heat generated from high-frequency alternating current obtained by uninsulated electrode tips [5,6]
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