Underlying etiology associated with the diagnosis of absent contractility on high resolution esophageal manometry Luis Gerardo Alcalá-González; Alba Jimenez-Masip; Lucia Relea-Pérez; Claudia Barber-Caselles; Elizabeth Barba-Orozco;

A challenging alpha-fetoprotein after liver transplantation Emanuel Dias; Hélder Cardoso; Eduardo Rodrigues-Pinto; Raquel Portugal; Guilherme Macedo;

Mantle cell lymphoma: A rare cause of colon polyposis Emanuel Dias; Margarida Marques; Daniel Melo; Guilherme Macedo;