29.12.2021 Views

Diagnostic ultrasound ( PDFDrive )

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

CHAPTER 39 The Fetal Urogenital Tract 1357

A

B

FIG. 39.27 Urinary Tract Dilation—Low Risk. (A) Fetal kidneys at 19 weeks gestation. Transverse image demonstrates an anteroposterior

renal pelvic diameter (RPD) measuring 5 mm bilaterally. (B) Fetal kidneys at 32 weeks’ gestation (different case). Transverse image demonstrates

an anteroposterior RPD measuring 9 mm in the left kidney.

A

B

C

D

FIG. 39.28 Urinary Tract Dilation—Increased Risk. (A) Fetal kidneys at 20 weeks’ gestation. Transverse image demonstrates an anteroposterior

renal pelvic diameter (RPD) measuring 8 mm (calipers) in the right kidney. (B) Transverse image in a different fetus at 22 weeks demonstrates an

anteroposterior RPD measuring 6 mm in the left kidney, but there is peripheral calyceal dilation (arrows). (C) In the same fetus as (B), sagittal

view demonstrates peripheral calyceal dilation and a dilated ureter (arrow). The bladder is not dilated. (D) In a different fetus at 23 weeks’ gestation,

coronal image shows abnormal renal parenchyma bilaterally (arrows), which is more echogenic than the liver (L). The RPD (measured on transverse

view, not shown) was 6 mm.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!