Has the COVID-19 pandemic changed the clinical picture and tumour stage at the time of presentation of patients with colorectal cancer? A retrospective cohort study Oscar Cano-Valderrama; Raquel Sánchez-Santos; Vincenzo Vigorita; Marta Paniagua; Erene Flores; Lucia Garrido; Cristina Facal; Alejandro Ruano; Alberto San-Ildefonso; Enrique Moncada;

Prognostic value of the nodal ratio in gastric cancer: unicentric analysis of 199 patients Ibabe Villalabeitia Ateca; Arkaitz Perfecto Valero; Clara Serrano Hermosilla; Ainhoa Marcaida Salazar; Silvia Pérez Fernández; Aingeru Sarriugarte Lasarte;

Ischemic colitis. Does right colon location mean worst prognosis? Vincenzo Vigorita; Marta Paniagua García-Señoráns; Gianluca Pellino; Paula Troncoso Pereira; Alberto de San Ildefonso Pereira; Enrique Moncada Iribarren; Raquel Sánchez-Santos; Jose Enrique Casal Núñez;