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[Portal embolization (an experimental-morphological study)].
Khirurgiia
|August 9, 2001
Summary
Unilobar portal embolization using RABROM caused liver lobe necrosis and atrophy but stimulated regeneration in the remaining lobe. This technique can prepare patients with low liver function for major liver resections.
Area of Science:
- Hepatobiliary Surgery
- Interventional Radiology
- Experimental Pathology
Background:
- Extensive liver resections require adequate functional hepatic reserve.
- Portal vein embolization is a strategy to induce hypertrophy in the non-manipulated liver lobe.
- Biologic occlusive materials offer potential advantages in embolization procedures.
Purpose of the Study:
- To evaluate the experimental-morphological effects of unilobar portal embolization using RABROM on the liver.
- To assess the safety and efficacy of RABROM as a biologic occlusive material.
- To determine the potential of this method for pre-operative liver preparation.
Main Methods:
- Unilobar portal embolization using RABROM in 6 laboratory animals.
- Experimental-morphological analysis of liver tissue.
- Histopathological examination of embolized and non-embolized liver lobes.
Main Results:
- Portal venous embolization resulted in focal necrosis and atrophy of the embolized lobe, leading to portal cirrhosis.
- The non-embolized lobe exhibited significant regeneration and hepatocyte hypertrophy.
- RABROM demonstrated biologic inertia, causing no vascular wall damage or inflammation.
Conclusions:
- Unilobar portal embolization with RABROM induces predictable changes in the liver, including lobe atrophy and compensatory hypertrophy.
- RABROM is a biologically inert material suitable for portal venous embolization.
- This embolization technique is recommended for preparing patients with limited functional hepatic reserve for extensive liver resections.