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Analysis of recurrence patterns of early-stage non-small cell lung cancer treated with stereotactic ablative radiotherapy / 中华放射肿瘤学杂志
Chinese Journal of Radiation Oncology ; (6): 519-524, 2022.
Article in Chinese | WPRIM | ID: wpr-932699
ABSTRACT

Objective:

To analyze the failure patterns and influencing factors of stereotactic ablative radiotherapy (SABR) for early-stage non-small cell lung cancer (ES-NSCLC).

Methods:

113 cases of ES-NSCLC treated with SABR from 2012 to 2020 in our hospital were retrospectively analyzed. The failure patterns, recurrence time, recurrence site and influencing factors were analyzed. Kaplan-Meier method was used to calculate the local recurrence rate, regional lymph node recurrence rate and distant metastasis rate. Univariate analysis was performed by Log-rank test, and multivariate analysis was performed by Cox model.

Results:

The median follow-up time was 58 months (range 6-108 months), and a total of 45 patients (39.8%) recurred. The median recurrence time was 36 months. Distant metastasis (DM) occurred in 31 patients (27.4%) and DM alone in 24 patients (21.2%). Local recurrence (LR) was developed in 12 patients (10.6%) and LR alone in 7(6.2%). Regional lymph node recurrence (RR) occurred in 11 patients (9.7%) and RR alone in 6 patients (5.3%). LR combined with RR was observed in 1 case (0.9%), LR combined with DM in 3(2.7%), LR combined with RR and DM in 1(0.9%), and RR combined with DM in 3(2.7%). The 1-, 2-, 3-, 4-and 5-year recurrence rates were 5.4%, 16.6%, 27.5%, 44% and 51.2%, respectively. Univariate and multivariate analyses suggested that EGFR mutation was an influencing factor of high recurrence rate.

Conclusion:

ES-NSCLC patients treated with SABR alone have a high recurrence rate, and DM is the most common mode of failure. Follow-up consolidation therapy is recommended, especially for EGFR mutation-positive NSCLC patients.

Full text: Available Index: WPRIM (Western Pacific) Type of study: Prognostic study Language: Chinese Journal: Chinese Journal of Radiation Oncology Year: 2022 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Type of study: Prognostic study Language: Chinese Journal: Chinese Journal of Radiation Oncology Year: 2022 Type: Article