• Dagmar K. Kalousek
  • Naomi Fitch
  • Barbara A. Paradice


The term conceptus (products of conception) includes all the structures that develop from the zygote: the embryo, or fetus, and the placenta with its membranes. The developing human is considered to be an embryo from conception until the end of the eighth week, by which time all major organ systems have been formed. From the beginning of the ninth week until birth, the developing human is called a fetus.


Spontaneous Abortion Neural Tube Defect Trimester Abortion Multiple Anomaly Amniotic Band 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • Dagmar K. Kalousek
    • 1
  • Naomi Fitch
    • 2
  • Barbara A. Paradice
    • 3
  1. 1.Department of PathologyThe University of British Columbia and BC Children’s HospitalVancouverCanada
  2. 2.Department of Pathology, Lady Davis Institute, Sir Mortimer B. Davis Jewish General HospitalThe University of British ColumbiaMontrealCanada
  3. 3.Embryopathology UnitBC Children’s HospitalVancouverCanada

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