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Cytologic changes in small hepatocellular carcinomas after radiofrequency ablation
Shi-Ming Lin1, Chien-Heng Shen, Deng-Yn Lin
1Liver Research Unit, Chang Gung Memorial Hospital, Chang Gung University, Taipei, Taiwan.
Acta Cytologica
|June 4, 2002
Summary
Cytologic evaluation of hepatocellular carcinoma (HCC) after radiofrequency ablation (RFA) reveals cell patterns indicating complete tumor necrosis. This study illustrates key cytologic changes post-RFA for effective treatment assessment.
Area of Science:
- Hepatobiliary Medicine
- Interventional Radiology
- Cytopathology
Background:
- Hepatocellular carcinoma (HCC) is a primary liver malignancy.
- Radiofrequency ablation (RFA) is a minimally invasive treatment for HCC.
- Accurate assessment of RFA efficacy is crucial for patient management.
Purpose of the Study:
- To describe the cytologic alterations in HCC following RFA.
- To correlate cytologic findings with imaging results post-RFA.
Main Methods:
- Fine needle aspiration (FNA) cytology was performed before and after RFA.
- Cytologic specimens were stained using Riu's method.
- Triphasic helical computed tomography (CT) was used to assess treatment response.
Main Results:
- Post-RFA cytology showed granular/amorphous debris, degenerated cells, and necrotic material.
- Cytologic patterns included necrotic cells and debris (14 tumors) or fine, granular necrosis (9 tumors).
- Helical CT demonstrated no enhancement in treated HCCs, indicating successful ablation.
Conclusions:
- Cytologic findings are indicative of complete tumor necrosis after RFA.
- Cytopathology provides valuable insights into RFA treatment effectiveness for HCC.