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| First Trimester Fetal Physiologic Midgut Herniation :Transvaginal Sonographic Findings |
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| Tae Hee Kwon, M.D. Yong Hyun Park, M.D. |
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| Department of Radiology, CHA Geneal Hospital, Pochon college of Medicine |
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| PURPOSE : To evaluate the sonographic features and appearance time of the physiologic midgut herniation early in
pregnancy.
M ATERIALS and METHODS : Sonograms of 87 fetuses ranging from 7 to 13 weeks were obtained over a 2-month peri-od.
The presence or absence, the size and echogenecity of the physiologic midgut herniation were evaluated on
each examination. Disappearance of the midgut herniation was confirmed on follow-up sonogram at 13-20
weeks, 3-12weeks after the first sonogram. The results were analyzed in terms of appearance or disappearance
time of midgut herniation.
RESULTS : In all cases of physiologic midgut herniation, an echogenic mass measuring 0.4-0.7cm was demonstrated
within the base of the umbilical cord at its insertion into the fetal abdomen. This herniation was detected in 3/6
cases (50%) at 8 weeks, in 15/16 cases (94%) at 9 weeks, in 22/24 cases (92%) at 10 weeks and in 12/27 cases
(44%) at 11 weeks gestation. None of the fetuses studied at 7 weeks and 12 weeks had a midgut herniation.
CONCLUSION : Sonographic findings of a 0.4-0.7cm sized echogenic mass within the base of the umbilical cord
which appears from 8weeks to 12weeks ’pregnancy represent physiologic midgut herniation in early pregnancy
and should not be confused with pathologic ventral wall defect such as omphalocele or gastroschisis. |
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| Keyword : Fetus, abnormalities, Fetus, gastrointestinal tract, Fetus, US |
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pdf파일 : 125권태희.pdf 
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> Journal > Journal Search 
Journal of Korean Society of Ultrasound in Medicine 1999 ; 18 (2) : p.125-129
