PMC5863329_01
Ultrasonographic findings of the fetus at 14 weeks of gestation. A fetal intra-abdominal cyst (34 x 24 mm in size) and oligohydramnios are observed.
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She underwent ultrasonography on admission, and a fetal abdominal cyst with a size of 34 x 24 mm and oligohydramnios were found (Figure 1).
Sirenomelia with fused lower limbs and a bulging abdomen.
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The fetus showed fused lower limbs, a bulging abdomen, and absent external genitalia (Figure 2).
Sections of the specimen of the fetal abdominal cyst and histologic findings (hematoxylin and eosin staining, x40).
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Histopathological examination revealed that the cyst comprised small intestine epithelium in the anterior region and bladder epithelium and urothelium in the posterior, which turned out to be a saccular cloaca (Figure 3).