Allegheny Health Network, Pittsburgh, PA
Vladimir Valakh , Graeme Williams
Background: Role of stereotactic body radiotherapy (SBRT) to the liver for patients with poor hepatic function after transcatheter arterial chemoembolization (TACE) has not been established. We reviewed results of SBRT for men with hepatocellular carcinoma (HCC) and Child-Pugh (CP) score ≥ 8 cirrhosis after TACE. Methods: Following a median of 3 TACE treatments, five males with severe cirrhosis received SBRT for persistent or progressive HCC in 2011-14. Clinico-pathologic characteristics and treatment details were retrospectively retrieved. Results: Median age at diagnosis was 55 years (range, 48 – 55). Median interval between cancer diagnosis and SBRT was 38 months (range, 3 – 60). All 5 patients experienced decline in CP score after TACE, for a median of drop of 1 point (range, 1 – 3) between the initiation of TACE and referral for radiotherapy. At time of SBRT, 4 had CP class B and 1 class C cirrhosis with median CP score of 9 (range, 8 – 11). There were no distant metastases and one patient had extrahepatic tumor extension. Three of 5 exhibited clinical symptoms of decompensated cirrhosis within 30 days before radiotherapy and one had portal vein thrombosis. Median MELD score at SBRT was 15 (range, 12 – 18). SBRT to a median total dose of 27.5 Gray (range, 27.5 – 30) was delivered in 5 once daily fractions. Median radiotherapy course duration was 9 days (range, 5 – 18). All patients had single radiation therapy targets with median largest tumor dimension of 3.6 cm (range, 2.4 – 6.2). Median planned target volume was 24 cm3(range, 17 – 197). Sorafenib was given prior to SBRT to one patient, concurrently to one, and sequentially after radiotherapy to another. There were no acute complications. Two patients died within 20 days from completion of SBRT. Median follow up for surviving > 20 days was 10 months (range, 5 – 13). None experienced radiographic tumor progression after radiotherapy. Estimated overall survival was 40% at 6 months (95% confidence intervals, 0 – 83.8%). Conclusions: For HCC patients with CP score ≥ 8 following TACE, prognosis after liver SBRT was poor.
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