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ObjectiveTo investigate the survival and adverse reactions of patients with unresectable cholangiocarcinoma after stereotactic body radiation therapy （SBRT）. MethodsA total of 27 patients with unresectable solitary cholangiocarcinoma without metastasis who underwent SBRT in The Fifth Medical Center of Chinese PLA General Hospital from February 2012 to July 2020 were enrolled. The prescribed dose to planning target volume was 42-60 Gy in 5-8 fractions， with 5-11 Gy/fraction. Among these patients， five patients were also treated with chemotherapy and transcatheter arterial chemoembolization. The 6-， 12-， 18-， and 24-month overall survival （OS） rates， progression-free survival （PFS） rates， and local control （LC） rates were used as the assessment indices for treatment outcome； Common Terminology Criteria for Adverse Events v.4.03 was used to evaluate adverse reactions； the Kaplan-Meier method was used to calculate OS， PFS， and LC rates. ResultsThe median follow-up time was 17 months. For all 27 patients， the 6-， 12-， 18-， and 24-month OS rates were 100%， 88%， 57.5%， and 47.9%， respectively； the 6-， 12-， 18-， and 24-month PFS rates were 74.1%， 58.6%， 47.9%， and 35.9%， respectively； the 6-， 12-， 18-， and 24-month LC rates were 96.3%， 91.9%， 84.8%， and 76.4%， respectively. No grade 3 or above toxic reactions were observed. Five patients were diagnosed with radiation-induced liver injury， but there was no death due to radiation-induced liver injury. ConclusionSBRT is safe and effective in the treatment of unresectable cholangiocarcinoma， with relatively high survival rate， PFS rate， and LC rate and low toxicity， and therefore， SBRT can be used as an alternative treatment method for patients with cholangiocarcinoma who are not candidates for surgery.
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Objective To explore the influence of G4 cyberknife treatment of large hepatocellular car-cinoma on liver function,and to evaluate its treatment safety.Methods Sixty-three large liver cancer patients treated with routine G4 cyberknife treatment were retrospectively analyzed,and then statistical analysis of the difference in liver function before and after treatment was conducted.Results After G4 cyberknife treatment of 1 2 months,the levels of ALT,ALP,TBIL,PA were respectively 23.00 U /L,1 1 1 .00 U /L,1 3.70 μmol/L, (81 .87 ±1 3.94)%.Compared with the levels before treatment [28.00 U /L,32.00 U /L,1 1 .30 μmol/L, (86.07 ±1 4.07)%],there were no signi-ficant differences found (Z =-1 .677,P =0.094;Z =-0.504, P =0.61 4;Z =-1 .945,P =0.053;t =1 .271 ,P =0.21 3).The level of ambumin was (34.84 ±4.75)g/L at 1 2 months after treatment,which decreased and the difference compared with the level before treatment [(37.45 ±4.1 4)g/L]was significant (t =3.357,P =0.002).The Child-Pugh grade was 5.80 ±1 .1 7 respectively at the time points of 1 2 months after treatment,and no significant difference was found compared with the Child-Pugh grade before treatment (5.48 ±0.81 ,t =-1 .668,P =0.1 06).Conclusion G4 cyberknife treatment does not cause liver injury.It is safe and reliable in large liver cancer treatment.So,it is worth widely clinical popularizing.