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To provide useful information for diagnosing and predicting fetal intraabdominal extralobar pulmonary sequestration (IEPS), a retrospective review of diagnostic approaches was conducted. Ultrasonography was performed serially in 21 fetuses with IEPS from 2005 to 2017. Prenatal sonographic features, treatment, and outcomes of each case were evaluated and collected. These cases of IEPS were also compared to 43 cases previously reported by other researchers from 1986 to 2017. Of the 21 sonographic features, 14 (67%) were hyperechoic, 21 (100%) were well circumscribed, and 17 (81%) depicted a mass that shifted with fetal breaths/hiccups non-synchronized with adjacent organs (sliding sign). Feeding arteries were detected prenatally in 18 patients (86%). The lesion volume was 10.17 ± 4.66 cm 3 , the congenital cystic adenomatoid malformation volume ratio and cardiothoracic ratio were in normal range. The gestational age at diagnosis, location and echotexture of the lesion, and rate of surgical treatment were similar to previous studies, but with a significantly higher rate of detected feeding arteries ( P  < 0.01), and associated anomalies ( P  < 0.01). All infants who underwent surgery after birth had satisfactory outcomes. The sliding sign and feeding artery are essential features of IEPS in prenatal diagnosis.

Prenatal diagnosis of fetal intraabdominal extralobar pulmonary sequestration: a 12-year 3-center experience in China