Dyspnea in Pregnancy: A Case Report of a Third Trimester Mediastinal Mass in Pregnancy.

BACKGROUND Dyspnea in pregnancy is common and attributable to a variety of etiologies including normal physiology. The obstetric provider is challenged with distinguishing between physiologic versus pathologic dyspnea. CASE REPORT A 31-year-old G2 P1001 female at 34 weeks gestation presented with dyspnea, tachycardia, and inability to lie supine.