The shoulder sign of pyloric stenosis is seen during barium examination and refers to the bulging of the hypertrophied pyloric muscle into the lumen of the antrum.
It is closely related to the cervix sign of pyloric stenosis.
- 1. Hernanz-Schulman Marta, Yuwei Zhu, Sharon M. Stein et al. “Hypertrophic Pyloric Stenosis in Infants: US Evaluation of Vascularity of the Pyloric Canal1.” Radiology 229, no. 2 (November 2003): 389-393. doi:10.1148/radiol.2292021303.
- 2. Hernanz-Schulman Marta. “Infantile Hypertrophic Pyloric Stenosis1.” Radiology 227, no. 2 (May 2003): 319-331. doi:10.1148/radiol.2272011329.