R valve in hcc

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The R valve (or replacement valve) in HCC most likely refers to Regorafenib as a second-line treatment, or possibly the RETREAT score or another specific concept. Let me search properly.
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R valve HCC hepatocellular carcinoma meaning radiology

The search didn't find a direct "R valve HCC" result. This likely refers to the RETREAT score or Regorafenib or a specific mnemonic. Let me search more specifically.
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"R valve" HCC hepatocellular carcinoma TACE treatment score

"R valve" is not a standard medical term I can find. Could you clarify what you mean? Let me check if this is a pharmacology mnemonic or a specific score.
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"R0 valve" OR "R wave" OR "R criteria" hepatocellular carcinoma staging diagnosis

I cannot find "R valve" as a standard term in HCC from any of my sources - textbooks, web search, or medical databases. This term is not established in the HCC literature I have access to.
Could you clarify what you mean by "R valve in HCC"? Here are some possibilities:
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What do you mean by 'R valve in HCC'? Could you clarify which of these (or something else)?

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