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A analysis of the spatial distribution characteristics of brain metastasis and the risk of hippocampus metastasis in patients with EGFR mutant lung cancer
Wu Junlan1,2, Fan Xingwen1, Wang Hongbing1, Wu Kailiang1
1Department of Radiation Oncology,Fudan University Shanghai Cancer Center,Shanghai 200032,China; 2Department of Oncology, Shanghai Armed Police General Hospital,Shanghai 201103,China
AbstractObjective To analyze the spatial distribution of brain metastases in EGFR-mutant lung cancer and the risk of hippocampal metastasis. Methods Patients with lung cancer brain metastases diagnosed and treated in the Shanghai Cancer Center Fudan University from 2006 to 2016 were enrolled. The brain metastasis with positive mutation of EGFR gene was screened. The magnetic resonance images of the patients were reviewed and the distribution characteristics of brain metastasis were analyzed. Results A total of 920 lung cancer patients with brain metastases were screened,266 of whom had EGFR gene mutation detection,and 131(49%) were identified as EGFR gene mutations. Excluding 17 patients who did not have a head magnetic resonance examination in our hospital,a total of 114 patients and 738 lesions were enrolled in this study. The proportion of brain metastases distributed in each brain region was 22.8%,19.5%,22.0%,13.4%,3.3%,16.7%,and 2.2% for frontal,temporal,parietal,occipital lobe,insula,cerebellum,and brainstem,respectively. The number of metastases and cases located in the hippocampus,<5mm from the hippocampus,<10mm from the hippocampus,and<15mm from the hippocampus were 6(0.8%),10(1.3%),11(1.4%),and 14(1.8%),5 cases (4.4%),8 cases (7.0%),9 cases (7.9%),and 11 cases (9.6%),respectively. Conclusion EGFR-mutant lung cancer brain metastasis is low risk in the hippocampus and its surrounding 15mm.
Fund:Fund program:National Natural Scientific Foundation of China (81372431, 81872551, 81903252)
Corresponding Authors:
Fan Xingwen,Email:wenxingfan@126.com;Wu Kailiang,Email:wukailiang@aliyun.com
Cite this article:
Wu Junlan,Fan Xingwen,Wang Hongbing et al. A analysis of the spatial distribution characteristics of brain metastasis and the risk of hippocampus metastasis in patients with EGFR mutant lung cancer[J]. Chinese Journal of Radiation Oncology, 2019, 28(11): 817-820.
Wu Junlan,Fan Xingwen,Wang Hongbing et al. A analysis of the spatial distribution characteristics of brain metastasis and the risk of hippocampus metastasis in patients with EGFR mutant lung cancer[J]. Chinese Journal of Radiation Oncology, 2019, 28(11): 817-820.
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2019, Vol. 28 
