ArticleAuthors: Trinh Le Huy, Pham Duy Manh (2021)
Gastrointestinal metastasis in lung cancer is not commonly encountered clinically, of which rectal involvement
is a sporadic event. There were few reports about rectal metastasis in lung cancer. All of them had a dismal
prognosis. We report a case of synchronous rectal metastasis in a lung cancer patient with a different clinical
scenario, treatment, and prognosis. The patient presented with infrequent hematochezia due to a rectal mass
confirmed as adenocarcinoma on core biopsy. Computer tomography showed many nodules in both lungs,
which raised the initial diagnosis of pulmonary metastasis in rectal cancer 
