参考文献
Parada Villavicencio C, Adam S, Nikolaidis P, Yaghmai V, Miller F. Imaging of the Urachus: Anomalies, Complications, and Mimics. Radiographics. 2016;36(7):2049-63. doi:10.1148/rg.2016160062 - Pubmed
DiSantis D, Siegel M, Katz M. Simplified Approach to Umbilical Remnant Abnormalities. Radiographics. 1991;11(1):59-66. doi:10.1148/radiographics.11.1.1996398 - Pubmed