Sgaramella, L. I.; Gurrado, A.; Fischetti, E.; Giuseppe Massimiliano De Luca; Pasculli, A.; Brascia, D.; Cazzato, G.; Trabucco, S.; Testini, M. Rare Gastrointestinal Metastases from Primary Lung Cancer. Two Case Reports of Patients Managed With Emergency Surgery. Ann Ital Chir 2021, 92, 155-161.