Physiological peritoneal fluid herniating through capacious femoral ring manifests an appearance similar to a speech bubble/speech box on ultrasound imaging .
This is an invaluable sonographic sign for identifying clinically occult femoral hernias and differentiating them from inguinal hernias and cysts of the canal of Nuck in females
References;
Thaker, S., Botchu, R. & Gupta, H. Sonographic “speech bubble/speech box sign” in clinically occult femoral hernias: ultrasound findings and anatomical basis. J Ultrasound 24, 361–366 (2021). https://doi.org/10.1007/s40477-020-00484-5
