Section through the embryo
The body-stalk, also known as the allantoic stalk, is a band of mesoderm that connects the caudal end of the embryo to the chorion in development. With the formation of the caudal fold, the body-stalk assumes a ventral position; a diverticulum of the yolk-sac extends into the tail fold and is termed the hindgut. With continued development, the body-stalk is later replaced by the umbilical cord.
Body stalk anomalies occur in approximately 1 in 15,000 births. They are due to defects in the formation of cephalic, caudal, and lateral embryonic body folds, that result in a reduced or absent umbilical cord.
- Arthur Robinson (1913). Cunningham's Textbook of Anatomy. William Wood. p. 54.
- Asim Kurjak (30 June 2013). Donald School Textbook of Transvaginal Sonography. JP Medical Ltd. p. 28. ISBN 978-93-5090-473-2.
- Diana W. Bianchi; Timothy M. Crombleholme; Mary E. D'Alton (1 January 2000). Fetology: Diagnosis & Management of the Fetal Patient. McGraw Hill Professional. ISBN 978-0-8385-2570-8.
- Kocherla, K; Kumari, V; Kocherla, PR (January 2015). "Prenatal diagnosis of body stalk complex: A rare entity and review of literature". The Indian Journal of Radiology & Imaging. 25 (1): 67–70. doi:10.4103/0971-3026.150162. PMC 4329692. PMID 25709170.
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