Presentation
Continious crying with a palpable mass in the left flank.
Patient Data
The ultrasound exam demonstrates a cystic lesion of the left flank with an echogenic inner layer (mucosal layer) and a hypoechoic outer layer (muscular layer), highly suggestive of a gastrointestinal tract duplication cyst.
Case Discussion
CT features of cystic mass with an echogenic inner mucosal layer and hypoechoic outer muscular layer most consistent with a gastrointestinal tract (GIT) duplication cyst, that was confirmed at surgery as an enteric duplication cyst.
The ultrasound exam plays an important role:
to suggest the diagnosis of a gastrointestinal tract duplication cyst by the combination of an echogenic inner mucosal layer and hypoechoic outer muscular layer
to exclude other differential diagnoses at this age, such as omental cyst, mesenteric cyst, and ovarian cyst