Document Detail

Incidental lesions in nonhuman primate placentae.
MedLine Citation:
PMID:  3750737     Owner:  NLM     Status:  MEDLINE    
Twenty-one placentae from uncomplicated pregnancies of rhesus macaques in the third trimester (124-164 days) were examined to determine placental incidental lesions. Placental weight (PW) generally correlated with fetal weight (FW); PW:FW equaled approximately 1:3. Most placentae were bidiscoid (9.5% monodiscoid) with eccentric cord insertion and marginal or circummarginate membrane insertion. Macroscopically, there was in varying degrees, subchorionic, perivillous, and perilobular fibrin deposition, focal infarction, retroplacental hematoma, and calcification. Histologic changes included fibrinoid necrosis of villi, multifocal acute inflammation, excessive cytotrophoblasts, formation of syncytial knots, and intimal proliferation in umbilical vessels. Volume density of fibrinoid necrosis and calcification in terminal villi showed nonstatistically significant increases to term. However, calcification in reference to entire placental tissue increased significantly to term. All lesions seen in the rhesus are also seen incidentally in human placentae, but may become significant in correlation with pregnancy wastage if present to a large degree.
T E Bunton
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Veterinary pathology     Volume:  23     ISSN:  0300-9858     ISO Abbreviation:  Vet. Pathol.     Publication Date:  1986 Jul 
Date Detail:
Created Date:  1986-10-01     Completed Date:  1986-10-01     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0312020     Medline TA:  Vet Pathol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  431-8     Citation Subset:  IM    
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MeSH Terms
Body Weight
Fetus / anatomy & histology
Gestational Age
Macaca / anatomy & histology*
Macaca mulatta / anatomy & histology*,  embryology
Organ Size
Placenta / anatomy & histology*,  pathology
Grant Support

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