Reactions 1704, p172 - 2 Jun 2018 Development of resistance in lung adenocarcinoma transforming to small cell lung cancer and squamous cell carcinoma: case report A man in his early 40’s developed resistance to gefitinib with transformation of lung adenocarcinoma to small cell lung cancer and squamous cell carcinoma. The man, who had been diagnosed with EGFR-mutated lung adenocarcinoma at the age of 41 years, started receiving oral gefitinib 250 mg/day in August 2014. Initially, gefitinib treatment showed a good clinical response. However, 11 months after gefitinib treatment, he acquired drug resistance. In November 2015, a CT showed progression in right lung lesion along with the development of new lesions in the left lung. He then took self-treatment with erlotinib [Tarceva], sorafenib and various other medications. Despite treatment, his carcinoma progressed. In February 2017, he was readmitted. A positron emission tomography-CT showed a mass in the right hilus pulmonis and multiple nodules in the bilateral lungs with high glycometabolism. Thereafter, a lung puncture biopsy was performed. A histopathological examination revealed SCLC. Thereafter, the man received etoposide and cisplatin chemotherapy. Despite this, his right lung mass progressed. A histopathological examination showed SCC. He died in April 2017 [cause of death not stated]. Author comment: "Here we reported a 41-year-old man with EGFR-mutated lung adenocarcinoma and he showed histologic transformation to both small-cell lung cancer (SCLC) and squamous cell carcinoma(SCC) after treatment of gefitinib." "[T]he patient acquired drug resistance to gefitinib after 11 months of treatment. At last, the histopathologic examination showed the patient had both SCLC and SCC, while adenocarcinoma cell was not found." Yao Y, et al. Histologic transformation from adenocarcinoma to both small cell lung cancer and squamous cell carcinoma after treatment with gefitinib: A case report. Medicine 97: e0650, No. 18, 01 May 2018. Available from: URL: http:// doi.org/10.1097/MD.0000000000010650 - China 803322808 0114-9954/18/1704-0001/$14.95 Adis © 2018 Springer International Publishing AG. All rights reserved Reactions 2 Jun 2018 No. 1704
Reactions Weekly – Springer Journals
Published: Jun 2, 2018
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