Docetaxel, gemcitabine, and cisplatin administered for non-small cell lung cancer during the first and second trimester of an unrecognized pregnancy.

Although several chemotherapeutic agents have been proven to be safe for the fetus after the organogenesis period, there is limited information on their use during the first trimester of pregnancy. We here report the first case of a patient with lung cancer who was treated with platinum-based chemotherapy from the first trimester of an unrecognized pregnancy. A 35-year-old woman was diagnosed with stage IV non-small cell lung cancer with brain metastasis. Since she recalled the date of her last menstrual period at about 20 days prior to consult, we did not consider the possibility of conception at the time of diagnosis. With an object of controlling the increased intracranial pressure, we initially performed a craniotomy with tumor removal, followed by whole brain irradiation. Without our knowledge of her pregnancy, she received a palliative chemotherapy with docetaxel and cisplatin followed by gemcitabine and cisplatin as the second-line chemotherapeutic agents between weeks 9 and 22 of gestation. Follow-up computed tomographic scans performed 2 months after the last chemotherapy showed a fetus in the patient's abdomen. Cesarean section was performed at 33 weeks of gestation, delivering a 1490 g female newborn with no evidence of congenital malformations.