Vanishing Twin Syndrome Clinical Presentation

Updated: May 10, 2016
  • Author: Ann L Anderson-Berry, MD, PhD; Chief Editor: Christine Isaacs, MD  more...
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History

Problems usually develop during the first trimester of pregnancy. The most common presenting complaints include bleeding, uterine cramps, and pelvic pain. [24]

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Physical

Vaginal bleeding may be observed on pelvic examination. [24]

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Causes

The cause of vanishing twin syndrome is frequently unknown; however, this condition occurs more often in fetuses with genetic or chromosomal abnormalities. [5] Improper cord implantation may also play a role in some cases.

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