Biliary tract schwannoma: A rare cause of obstructive jaundice in a young patient - Fonseca, Gilton Marques; Montagnini, André Luis; Rocha, Manoel de Souza; Patzina, Rosely Antunes; Bernardes, Mário Vinícius Angelete Alvarez; Cecconello, Ivan; Jukemura, José (World Journal of Gastroenterology, 2012)