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Human Genetics

, Volume 55, Issue 1, pp 87–98 | Cite as

Anatomic and chromosomal anomalies in 639 spontaneous abortuses

  • T. Kajii
  • A. Ferrier
  • N. Niikawa
  • H. Takahara
  • K. Ohama
  • Sugandhi Avirachan
Original Investigations

Summary

A total of 639 spontaneous abortuses collected in a maternity hospital were set up in culture. This sample included 565 unselected consecutive abortuses and 74 selected abortuses ascertained by morphology and/or clinical history. Among these, 339 were incomplete specimens with no recovered embryo or fetus, 110 were anatomically apparently normal and 190 were grossly abnormal. In the unselected series, 565 specimens were cultured and 402 were karyotyped; 215 (53.5%) were chromosomally abnormal. In the selected series, 74 specimens were set up in culture and 45 were karyotyped; 26 (57.7%) had an abnormal karyotype. In all, successful karyotyping was done on 447 abortuses (70%), of which 339 were studied with banding. One or more major chromosome abnormalities were detected in 241 (54%) of the karyotyped cases, 230 of which were numerical anomalies and 11 structural anomalies. Numerical anomalies included primary autosomal trisomies (31% of the total karyotyped), 45,X (10%), triploidy (6.5%), and tetraploidy (1.8%). Of the 22 types of autosomal trisomies possible, all except those for 1, 5, 17, and 19 were identified. An abortus with a 49,XX,+2,+5,+8 karyotype was detected. The excess autosomal material present in the triple trisomic abortus corresponded to 10% of the haploid autosomal complement. Of the 11 abortuses with structural abnormalities, seven were inherited while the other four were sporadic. The survival rate of 45,X conceptuses was estimated to be one in 300.

Keywords

Metabolic Disease Clinical History Chromosome Abnormality Chromosomal Anomaly Structural Abnormality 
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-Verlag 1980

Authors and Affiliations

  • T. Kajii
    • 1
  • A. Ferrier
    • 1
  • N. Niikawa
    • 1
  • H. Takahara
    • 1
  • K. Ohama
    • 1
  • Sugandhi Avirachan
    • 1
  1. 1.Laboratory of Embryology and CytogeneticsUniversity Clinic of Gynecology and ObstetricsGenevaSwitzerland

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