Pancreatic splenosis mimicking neuroendocrine tumors: microhistological diagnosis by endoscopic ultrasound guided fine needle aspiration - Ardengh, José Celso; Lopes, César Vivian; Kemp, Rafael; Lima Filho, Éder Rios; Venco, Filadelfo; Santos, José Sebastião dos (Arquivos de Gastroenterologia, 2013)