In utero fetal lung infarction has rarely been reported. We present a case of intrauterine lung infarction in a 28-3/7 weeks' gestation monochorionic twin following intrauterine fetal demise of the co-twin at 20 weeks. This case highlights the potential for thromboembolic events (TBEs) associated with monochorionic gestations to include pulmonary TBE and infarction among the risks for fetal morbidity and mortality.
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