Short bi-iliac distance in prenatal Ullrich-Turner syndrome.
The purpose of the present study is to evaluate the bi-iliac distance and the caudo-cranial position of the iliac bones in Ullrich-Turner syndrome (UTS) fetuses compared to recently published standards for normal fetuses. Whole-body radiographs in antero-posterior projections of 24 UTS fetuses (crown-rump lengths, 106-220 mm) were included in the study. From each radiograph, two horizontal (outer and inner bi-iliac distances) and two vertical (caudo-cranial) positions compared to the vertebral column were measured to estimate the position of the iliac bones. The present investigation revealed that both the outer and inner bi-iliac distances were significantly shorter in UTS fetuses than in normal fetuses. We also found that for the inner bi-iliac distance, the growth rate in UTS fetuses was significantly lower than in normal fetuses. This finding suggests not only a lesser growth but also a different growth pattern compared to normal fetuses. Regarding the caudo-cranial position of the iliac bones compared to the lower vertebral column, there was no significant difference for the lower caudo-cranial position, but the upper caudo-cranial position was significantly lower in UTS fetuses than in normal fetuses. The bi-iliac distance and the iliac bone position have not previously been described in Ullrich-Turner syndrome fetuses.
Hartling
Ulla B
UB
Department of Pathology, Hvidovre University Hospital, Copenhagen, Denmark.
Hansen
Birgit Fischer
BF
Keeling
Jean W
JW
Skovgaard
Lene T
LT
Kjaer
Inger
I
D005315:Fetal Diseases / Q000473:pathology*; D005333:Fetus / Q000002:abnormalities / Q000000981:diagnostic imaging; D007085:Ilium / Q000000981:diagnostic imaging*; D011859:Radiography; D014424:Turner Syndrome / Q000473:pathology*