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 40 The Fetal Musculoskeletal System 1383

A

B

C

FIG. 40.5 Spine Ossiication Centers. In lethal skeletal dysplasias,

assessment of the fetal spine ossiication centers can provide helpful

clues to the speciic diagnosis. The following cases are all lethal on the

basis of pulmonary hypoplasia, as evidenced by short ribs and a small

thoracic circumference. (A) Short-rib polydactyly syndrome with normal

ossiication of all three spine ossiication centers (circle). (B) Achondrogenesis

with demineralization of all three spine ossiication centers (circle).

(C) Hypophosphatasia with demineralization of the posterior ossiication

centers but mineralization of the vertebral body (circle).

A

B

FIG. 40.6 Spondylocostal Dysostosis at 22 Weeks. (A) Sagittal image demonstrates abnormal spine segmentation. (B) Three-dimensional

rendering of the spine further clariies the abnormal development of the spine and ribs with abnormal misshapen and abnormally fused vertebrae

leading to scoliosis, short trunk length, and widely variant rib spacing.

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

Saved successfully!

Ooh no, something went wrong!