Abstract
The objective of this study was to analyze hepatic failure progression and survival in patients with Barcelona Clinic Liver Cancer (BCLC) A3-B hepatocellular carcinoma (HCC) after stereotactic radiotherapy (SRT) with functional treatment planning. Liver SPECT was co-registered to 4DCT for avoidance of functional liver during SRT planning. Liver dose constraints/fractionation was based on functional liver volume. Concurrent capecitabine was administered for fraction size ≤ 4 Gy. Hepatic function, toxicity, and radiographic response were documented q4–6 months following radiotherapy. Twenty-two patients (14 Child-Pugh A, 8 Child-Pugh B Cirrhosis) with 39 lesions were analyzed. Fourteen patients received SBRT (mean dose 44.7 Gy, 5–6 fractions). Eight patients received SRT and concurrent capecitabine (mean dose 40.7 Gy, 14–18 fractions). Mean follow-up was 20 months. Nine patients developed grade ≤ 2 transient elevation of liver enzymes. At 24 months, Child-Pugh class was stable in 59% patients and MELD progression free survival was 76%. No RILD or accelerated hepatic failure was observed. In-field local control was 97.4% and overall survival was 59% at 2 years. Liver SRT with functional treatment planning is safe in intermediate hepatocellular carcinoma. Liver failure is not hastened despite the inclusion of 36% Child-Pugh B patients.
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