Healing efficacy in lung adenocarcinoma after targeted therapy, Covid 19 disease and radiosurgery of brain metastasеs

Lung adenocarcinoma is a common disease, in which high mortality is due to both men and women. In the article we present a 58-year-old man who has been diagnosed with metastatic pulmonary adenocarcinoma/T2B N2 M1a in 2018, on the occasion of dry irritating cough and shortness of breath. Also a positive EGFR mutations has been proven. Targeted therapy (TT) with gefitinib has been carried out for two years till 2020. The patient has been switched on osimertinib in 2020 due to local progression. Brain metastasis has been found in 2021. Radiosurgery (RS) with a singal fraction 15Gy was conducted for treatment of 4 brain metastases . The patient was infected after RS with Covid 19 in April 2021. Patients with specific EGFR mutations can be effectively treated with TT. After treatment with TT, brain metastases of pulmonary adenocarcinoma with specific EGFR mutations are more radiоsensibility and responded very well by high single radiation dose realized by radiosurgery (RS). Despite the worsened prognosis, including Covid 19 disease, by combining TT and RS, we achieved three-year survival in metastatic lung adenocarcinoma.