<Table> <Tr> <Td> </Td> <Td> This article does not cite any sources . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (December 2009) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article does not cite any sources . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (December 2009) (Learn how and when to remove this template message) </Td> </Tr> <P> The fetal pole is a thickening on the margin of the yolk sac of a fetus during pregnancy . It is usually identified at 8 weeks with abdominal ultrasound imaging, and 6 weeks with vaginal ultrasound imaging . However it is quite normal for the fetal pole to not be visible until about 9 weeks . The fetal pole may be seen at 2--4 mm crown - rump length (CRL). </P> <Table> <Tr> <Td> </Td> <Td> This developmental biology article is a stub . You can help Wikipedia by expanding it . <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> </Table>

When do you normally see a fetal pole