J Korean Radiol Soc.  1993 Dec;29(6):1320-1324.

Hypertrophic pyloric stenosis:pre- and post-operative sonographic findings

• Park JS
• Han DS
• Oh JS
• Kim MJ
• Gi JY
• Park BR
• Kim SJ
• Koh KS
• Kim BK

Abstract

The authors retrospectively analysed the ultrasonographic findings of 43 cases of surgically confirmed hypertrophic pyloric stenosis and their postoperative findings of sonograms taken at 1 month(n=40) or 3 months( n=5) after pyloromyotomy. In preoperative study, the thickened pyloric muscle was isoechoic or slight hypoechoic relative to liver on the midline longitudinal view and appeared as a "nonuniform acoustic ring" on the transverse view. The results of measurement in the all cases with hypertrophic pyloric stenosis were the pyloric thickness ≥3.8mm, the pyloric diameter ≥14mm, the pyloric channel length ≥16mm, the pyloric muscle volume ≥2.21Cm

MeSH Terms

Acoustics
Follow-Up Studies
Humans
Liver
Methods
Pyloric Stenosis, Hypertrophic
Reference Values
Retrospective Studies
Ultrasonography*