Doppler demonstration of cystic vein dilatation secondary to portal vein thrombosis - Cerri, Giovanni Guido; Habr Gama, Angelita; Paranagua Vezozzo, D C; Machado, Marcel Cerqueira César; Pinotti, Henrique Walter; Magalhães, Álvaro Eduardo de Almeida (Surgical Endoscopy, 1991)