Left hemicolectomy for an isolated metastases from lung adenocarcinoma to the colon

Colonic metastases from primary lung adenocarcinoma are rare and represent a diagnostic and management dilemma. This clinical presentation often mimics primary colonic cancer or non-malignant bowel pathology. The reported incidence of this entity is postulated to rise with the improvement in diagnostic imaging and histopathology testing. Colonic metastases from primary lung adenocarcinoma are associated with poor overall survival, as they represent an advanced pathological process with associated morbidity due to complications from the metastases. Though there is limited data on this pathological entity, if feasible, surgical resection is thought to be associated with survival benefits. We report a case of a woman in her 60s diagnosed with an isolated descending colon metastasis from a known primary lung adenocarcinoma on interval imaging. While asymptomatic at the time, the patient underwent a palliative left hemicolectomy due to the risk of luminal obstruction and perforation from the lesion if left untreated.