Placenta
Placental gross / microscopic abnormalities, nonneoplastic
Low weight / small for gestational age


Topic Completed: 1 October 2011

Revised: 18 February 2019

Copyright: 2002-2019, PathologyOutlines.com, Inc.

PubMed Search: Low weight small for gestational age [title] placenta

Mandolin S. Ziadie, M.D.
Page views in 2018: 845
Page views in 2019 to date: 546
Cite this page: Ziadie MS. Low weight / small for gestational age. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/placentalowweight.html. Accessed July 18th, 2019.
Definition / general
  • Placental weight that falls below the 10th percentile for gestational age
Etiology
  • Due to a variety of causes, including:
    • Fetal factors: prematurity, fetal malformations or trisomy, small for date fetus, neonatal high hemoglobin or lower than expected body size in later childhood for fetus
    • Maternal factors: low pregnancy weight gain, low maternal pregravid body weight, high maternal hemoglobin during pregnancy, gestational hypertension, paid employment during pregnancy, low parity, maternal diabetes, CMV, HSV or other chronic infections; other causes of reduced uteroplacental blood flow
Microscopic (histologic) description
  • Evidence of placental hypoxia including terminal villous hypoplasia, chorangiosis or Tenney-Parker change
Back to top