Fig. 1From: A 0.8-cm clear cell neuroendocrine tumor G1 of the gallbladder with lymph node metastasis: a case reportUltrasonography image shows a 0.8-cm low echoic nodule (arrowheads) in the neck of the gallbladder, which was preoperatively suspected to be a Rokitansky-Aschoff sinusesBack to article page