Document Detail

Pituitary dimensions and volume measurements in pregnancy and post partum. MR assessment.
MedLine Citation:
PMID:  9498873     Owner:  NLM     Status:  MEDLINE    
PURPOSE: Our purpose was to clarify and further characterize the changes in height, length, width, volume, and shape in the normal pituitary gland and in width in the infundibulum during pregnancy and the first 6 months post partum. MATERIAL AND METHODS: Cranial MR imaging was performed in 78 women who were pregnant in the second or third trimester or who were post partum, and in 18 age-matched control subjects who were not pregnant. Volume measurements were performed in 2 ways; volume 1=1/2 x height x length x width; and volume 2=area (measured by trackball) x slice thickness. RESULTS: Gland volume, height, width, length, and convexity, and infundibular width increased during pregnancy. The highest values were seen during the 3 days immediately post partum. When compared with volunteers, volumes 1 and 2 showed the largest increase (120%) among the parameters. Gland height showed the best correlation (r=0.94, p<0.00001) with gestational age. The mean height of the gland was 8.76 mm in the third trimester. None of the pregnant women had a gland height of above 10 mm during pregnancy. Only 2 subjects had gland heights of 10.04 and 10.2 mm during the 0-3 days post partum. After this first post-partum period of 3 days, the gland size, shape, and volume and the infundibular width returned to normal within 6 months. CONCLUSION: The pituitary gland enlarges in three dimensions throughout pregnancy. During pregnancy, the volume of the gland shows the highest percentage of increase compared to its length, height, and width. The maximum height of the gland does not exceed 10 mm during pregnancy but it may exceed 10 mm during the 3 days immediately post partum.
H Dinç; F Esen; A Demirci; A Sari; H Resit Gümele
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Acta radiologica (Stockholm, Sweden : 1987)     Volume:  39     ISSN:  0284-1851     ISO Abbreviation:  Acta Radiol     Publication Date:  1998 Jan 
Date Detail:
Created Date:  1998-03-09     Completed Date:  1998-03-09     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8706123     Medline TA:  Acta Radiol     Country:  DENMARK    
Other Details:
Languages:  eng     Pagination:  64-9     Citation Subset:  IM    
Department of Radiology, KTU Medical Faculty, Trabzon, Turkey.
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MeSH Terms
Anthropometry / methods
Magnetic Resonance Imaging*
Pituitary Gland / anatomy & histology*
Postpartum Period*
Regression Analysis

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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