Document Detail


Percutaneous ablation of malignant liver tumor in rabbits using low radio frequency energy.
MedLine Citation:
PMID:  9414419     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Radio frequency (RF) current has been used successfully to ablate normal human tissue. To further investigate the clinical application of this modality in tumors we studied the potential of using RF percutaneously to destroy experimental liver tumors. Thirty five outbred albino rabbits underwent liver VX2 tumor direct-implantation during open surgery. After 21 days ultrasonography was performed revealing tumor presence and size. A shielded RF needle was designed so that it could be inserted percutaneously through an introducing needle, and an electrical insulation shield covering the RF needle could be retracted to control the length of the exposed RF needle inside the tissue. Twenty two days after tumor implantation RF was applied via the aforementioned needle using a ZoMed International RF generator. In one group of rabbits the procedure was performed under direct vision during open surgery and on the other group treatment was applied percutaneously, guiding the needle by tumor palpation. Rabbits were killed 3 days later and pathology revealed 4 to 25 mm intratumoral RF induced lesions. A direct relation was found between lesion size, power and duration of RF application (At 7.5 W, r = 0.48, p = 0.032). Based on our preliminary results we may conclude that RF may have clinical application in the near future for percutaneous local tumor control in parenchymal organs.
Authors:
O Nativ; B Moskovitz; E Sabo; A Shalhav; J Kaftori; Y Barbara; D Mordohovich; B Goldwasser
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of experimental therapeutics & oncology     Volume:  1     ISSN:  1359-4117     ISO Abbreviation:  J. Exp. Ther. Oncol.     Publication Date:  1996 Sep 
Date Detail:
Created Date:  1998-01-30     Completed Date:  1998-01-30     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  9604933     Medline TA:  J Exp Ther Oncol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  312-6     Citation Subset:  IM    
Affiliation:
Department of Urology, Bnai Zion Medical Center, Haifa, Israel.
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MeSH Terms
Descriptor/Qualifier:
Animals
Humans
Hyperthermia, Induced*
Liver Neoplasms, Experimental / therapy*,  ultrasonography
Necrosis
Neoplasm Transplantation
Rabbits
Radio Waves*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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