2020 Volume 56 Issue 4 Pages 426-430
Case 1: A fetal diagnosis of pulmonary sequestration was reached at 22 weeks of gestation on the basis of ultrasound examination findings. A fetal MRI performed at 25 weeks of gestation revealed that lesions occupied two-thirds of the right thoracic cavity, but the lesions had shrunk in size after 26 weeks of gestation. Postnatal contrast-enhanced CT revealed that the lesions became clearly smaller than in the fetal stage. Elective video-assisted thoracoscopic right lower lobectomy was performed. Case 2: Lesions occupying one-third of the right thoracic cavity and aberrant arteries were seen on ultrasound examination at 21 weeks of gestation, and pulmonary sequestration was diagnosed. Shrinkage of the lesions was seen at 26 weeks of gestation, and they were no longer observed after 30 weeks of gestation. Postnatal contrast-enhanced CT revealed small lesions on the dorsal side of the right lower lobe. Elective video-assisted thoracoscopic right lower lobectomy was performed. Discussion: Together with improvements in ultrasound accuracy, an increasing number of cases in which aberrant arteries can be seen in the fetal stage is expected, and a definitive diagnosis of pulmonary sequestration can be reached. We report two cases in which pulmonary sequestration could be diagnosed in the fetal stage, and shrinkage could be quantitatively evaluated during gestation.
