Percutaneous cryoablation for renal cell carcinoma using ultrasound-guided targeting and computed tomography-guided ice-ball monitoring: radiation dose and short-term outcomes. 2019

Dong Kyu Kim, and Jong Yun Won, and Sung Yoon Park
1 Department of Radiology, Yonsei University College of Medicine, Seoul, Republic of Korea.

BACKGROUND Usefulness of ultrasound (US)-guided mass targeting and computed tomography (CT)-guided ice-ball monitoring in percutaneous cryoablation (PCA) for renal cell carcinoma (RCC) is still uncertain. OBJECTIVE To assess radiation dose and short-term outcomes of PCA for RCC using US-guided targeting and CT-guided ice-ball monitoring. METHODS Thirty-nine consecutive patients who underwent PCA for biopsy-proven RCC were included. Mass targeting was performed with US and ice-ball was monitored with CT guidance. Effective radiation dose of CT during PCA was recorded. Follow-up was conducted with contrast-enhanced CT or magnetic resonance imaging (MRI) (mean follow-up time = 10.1 ± 7.0 months). Local tumor progression was defined by the presence of focal enhancing areas at the ablation zone (CT, ≥ 20 HU; MRI, presence of focal enhancement on subtraction contrast-enhanced image). Technical success, major complication rate (e.g. Clavien-Dindo classification ≥ 3), and one-year local tumor progression-free survival (PFS) rate were analyzed. RESULTS Mean effective radiation dose in association with PCA was 12.1 ± 4.5 mSv (range = 7.0-25.2 mSv). Technical success was achieved in 100%. Local tumor progression occurred in a single patient (2.6%, 1/39), and one-year local tumor PFS rate was 95.7%. No major complication was found. CONCLUSIONS PCA using US-guided targeting and CT-guided ice-ball monitoring may allow acceptable local tumor control for RCC, as a radiation-reducing strategy.

UI MeSH Term Description Entries
D007668 Kidney Body organ that filters blood for the secretion of URINE and that regulates ion concentrations. Kidneys
D007680 Kidney Neoplasms Tumors or cancers of the KIDNEY. Cancer of Kidney,Kidney Cancer,Renal Cancer,Cancer of the Kidney,Neoplasms, Kidney,Renal Neoplasms,Cancer, Kidney,Cancer, Renal,Cancers, Kidney,Cancers, Renal,Kidney Cancers,Kidney Neoplasm,Neoplasm, Kidney,Neoplasm, Renal,Neoplasms, Renal,Renal Cancers,Renal Neoplasm
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D011829 Radiation Dosage The amount of radiation energy that is deposited in a unit mass of material, such as tissues of plants or animal. In RADIOTHERAPY, radiation dosage is expressed in gray units (Gy). In RADIOLOGIC HEALTH, the dosage is expressed by the product of absorbed dose (Gy) and quality factor (a function of linear energy transfer), and is called radiation dose equivalent in sievert units (Sv). Sievert Units,Dosage, Radiation,Gray Units,Gy Radiation,Sv Radiation Dose Equivalent,Dosages, Radiation,Radiation Dosages,Units, Gray,Units, Sievert
D002292 Carcinoma, Renal Cell A heterogeneous group of sporadic or hereditary carcinoma derived from cells of the KIDNEYS. There are several subtypes including the clear cells, the papillary, the chromophobe, the collecting duct, the spindle cells (sarcomatoid), or mixed cell-type carcinoma. Adenocarcinoma, Renal Cell,Carcinoma, Hypernephroid,Grawitz Tumor,Hypernephroma,Renal Carcinoma,Adenocarcinoma Of Kidney,Adenocarcinoma, Renal,Chromophil Renal Cell Carcinoma,Chromophobe Renal Cell Carcinoma,Clear Cell Renal Carcinoma,Clear Cell Renal Cell Carcinoma,Collecting Duct Carcinoma,Collecting Duct Carcinoma (Kidney),Collecting Duct Carcinoma of the Kidney,Nephroid Carcinoma,Papillary Renal Cell Carcinoma,Renal Cell Cancer,Renal Cell Carcinoma,Renal Cell Carcinoma, Papillary,Renal Collecting Duct Carcinoma,Sarcomatoid Renal Cell Carcinoma,Adenocarcinoma Of Kidneys,Adenocarcinomas, Renal Cell,Cancer, Renal Cell,Carcinoma, Collecting Duct,Carcinoma, Collecting Duct (Kidney),Carcinoma, Nephroid,Carcinoma, Renal,Carcinomas, Collecting Duct,Carcinomas, Collecting Duct (Kidney),Carcinomas, Renal Cell,Collecting Duct Carcinomas,Collecting Duct Carcinomas (Kidney),Hypernephroid Carcinoma,Hypernephroid Carcinomas,Hypernephromas,Kidney, Adenocarcinoma Of,Nephroid Carcinomas,Renal Adenocarcinoma,Renal Adenocarcinomas,Renal Carcinomas,Renal Cell Adenocarcinoma,Renal Cell Adenocarcinomas,Renal Cell Cancers,Renal Cell Carcinomas,Tumor, Grawitz
D003452 Cryosurgery The use of freezing as a special surgical technique to destroy or excise tissue. Cryoablation,Cryoablations,Cryosurgeries
D005240 Feasibility Studies Studies to determine the advantages or disadvantages, practicability, or capability of accomplishing a projected plan, study, or project. Feasibility Study,Studies, Feasibility,Study, Feasibility
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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