• Chen Kong, Dan Zhou, Ning Wu, and Chong Bai.
• Department of Respiratory and Critical Care Medicine, Changhai Hospital, Second Military Medical University, Shanghai, China.
• BMC Pulm Med. 2020 May 11; 20 (1): 135.

BackgroundBrain is one of the most common target organ of lung cancer metastasis, while descriptions of intraventricular carcinomatosis could hardly be found among previous cases. To date no cases from lung adenocarcinoma have been reported in the literature.Case PresentationWe report here a case of multiple intraventricular metastases from lung adenocarcinoma with EGFR G719X mutation. This 64-year-old woman was referred to our hospital with complaints of dizziness and vomiting. Target therapy with afatinib was initiated and the lesions in both lung and brain achieved good partial responses.ConclusionsThis case report revealed a phenomenon of rare intraventricular metastasis from lung cancer, which should be carefully distinguished from primary ventricular tumors. Compared to brain parenchyma metastasis, intraventricular lesions would cause more severe symptoms which may be rapidly progressive. Target therapy could become a potential option in such patients with non-drugresistant EGFR mutations.

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