The occurrence of pulmonary neoplasms in women of childbearing age is relatively uncommon. The usual age-specific causes of pulmonary lesions are the same for pregnant women as they are for the general population; however, women are at a slightly higher risk for several other pulmonary disorders during and after pregnancy. One such problem is choriocarcinoma with metastasis to the lungs. The general principles of diagnosis and treatment are the same as for any other patient, but again, several situations unique to pregnancy and the postpartum period deserve special emphasis. The most common problem involves the diagnosis and treatment of a suspicious pulmonary lesion early in pregnancy when general anesthesia would pose a risk to the fetus.