Stereotactic Body Radiation Therapy as A Radical or Salvage Treatment for Early-stage Hepatocellular Carcinoma: A Prospective Phase II Study

PurposeSurgical resection is standard therapy in stage I non–small-cell lung cancer (NSCLC); however, many patients are inoperable due to comorbid diseases. Building on a previously reported phase I trial, we carried out a prospective phase II trial using stereotactic body radiation therapy (SBRT) in this population.Patients and MethodsEligible patients included clinically staged T1 or T2 (≤ 7 cm), N0, M0, biopsy-confirmed NSCLC. All patients had comorbid medical problems that precluded lobectomy. SBRT treatment dose was 60 to 66 Gy total in three fractions during 1 to 2 weeks.ResultsAll 70 patients enrolled completed therapy as planned and median follow-up was 17.5 months. The 3-month major response rate was 60%. Kaplan-Meier local control at 2 years was 95%. Altogether, 28 patients have died as a result of cancer (n = 5), treatment (n = 6), or comorbid illnesses (n = 17). Median overall survival was 32.6 months and 2-year overall survival was 54.7%. Grade 3 to 5 toxicity occurred in a total of 14 patients. Among patients experiencing toxicity, the median time to observation was 10.5 months. Patients treated for tumors in the peripheral lung had 2-year freedom from severe toxicity of 83% compared with only 54% for patients with central tumors.ConclusionHigh rates of local control are achieved with this SBRT regimen in medically inoperable patients with stage I NSCLC. Both local recurrence and toxicity occur late after this treatment. This regimen should not be used for patients with tumors near the central airways due to excessive toxicity.

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Stereotactic Body Radiation Therapy as a Salvage Treatment for Single Viable Hepatocellular Carcinoma at the Site of Incomplete Transarterial Chemoembolization

10.21203/rs.3.rs-173174/v1 ◽

2021 ◽

Author(s):

Sumin Lee ◽

Jinhong Jung ◽

Jin-hong Park ◽

So Yeon Kim ◽

Jonggi Choi ◽

...

Keyword(s):

Hepatocellular Carcinoma ◽

Radiation Therapy ◽

Adverse Events ◽

Transarterial Chemoembolization ◽

Stereotactic Body Radiation Therapy ◽

Medical Center ◽

Salvage Treatment ◽

Iodized Oil ◽

Stereotactic Body Radiation

Abstract Background: To evaluate the clinical outcomes of patients who received stereotactic body radiation therapy (SBRT) for single viable hepatocellular carcinoma (HCC) at the site of incomplete transarterial chemoembolization (TACE).Methods: Incomplete TACE was defined as (1) evidence of viable HCC at the site of TACE on follow-up images following one or more consecutive TACEs, (2) no definite tumor staining on celiac angiogram, or (3) no definite iodized oil uptake on post-embolization angiogram or computed tomography. A total of 302 patients were treated between 2012 and 2017 at Asan Medical Center (Seoul, South Korea). Doses of 10–15 Gy per fraction were given over 3–4 consecutive days. Treatment-related adverse events were evaluated according to the common terminology criteria for adverse events, version 4.03.Results: The median follow-up duration was 32.9 months (interquartile range [IQR], 23.6–41.7) and the median tumor size was 2.0 cm (range, 0.7–6.9). The local control (LC) and overall survival rates at 3 years were 91.2% and 72.7%, respectively. 95.4% of the tumors reached complete response (CR) during the entire follow-up period (anyCR). The median interval from SBRT to anyCR was 3.4 months (IQR, 1.9–4.7), and 39.9% and 83.3% of the lesions reached CR at 3- and 6-months after SBRT, respectively. Radiation-induced liver disease was observed in 8 (2.6%) patients. No patients experienced gastroduodenal bleeding within the radiation field.Conclusion: SBRT should be considered a feasible salvage treatment option for HCC after incomplete TACE.

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