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language
eng
Author
Tanaka, Osamu
Inomata, Yukihiro
Description
Two hundred and ninety-eight externally normal human male fetuses in Crown-Rump Length (CRL)from 50 to 345mm (10th-36th week of gestation) were examined by dissection for measurements of the urethra, bladder, prostate gland, and cavernous tissues.The urethral passage was examined by infusion of methylene blue dye, and the state of obstruction was observed by dissection.
It was found that the percent increases in the proximal part to the verumontanum were smaller in relation to CRL than in the distal part. Also in the penile urethra the percent of elongation was smaller than in the fixed portion of the utethra.The bladder was contracted in many specimens, but dilated bladders were not always accompanied by urethral obstruction.In contracted bladders, the muscular layer of the anterior wall
was thinner than the posterior wall in all specimens. The prostate gland had rapidly grown in cross diameter in the fetuses of CRL 190㎜ (6th month) and over.
Three fetuses had an urethral obstruction. The urethral passage was obstructed in 22 cases due to meatal atresia of the glans.
These data provide a standard of measurements for pathologists and clinicians and should assist in making an accurate diagnosis in pediatric urology.
Subject
human fetal urethra
measurements
urethral stenosis
Journal Title
Shimane journal of medical science
Volume
2
Issue
2
Start Page
103
End Page
114
ISSN
03865959
ISSN(Online)
24332410
Published Date
1978-12-01
NCID
AA00841586
Publisher Aalternative
Shimane Medical University
NII Type
Departmental Bulletin Paper
Format
PDF
Text Version
出版社版
OAI-PMH Set
Faculty of Medicine
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