A Rare Case of a Metastatic Lung Squamous Cell Carcinoma to the Large Bowel and the Liver.

Lung carcinoma is the leading cause of death worldwide, with almost 50% of the patients presenting with distant metastases at the moment of diagnosis. The most common metastases sites are the lymph nodes, the liver, the adrenal glands, the bones, and the brain. The gastrointestinal tract was considered an unusual site for lung metastases, and due to the asymptomatic progress of the disease, they are usually diagnosed at a late stage. In the present case study, the clinical presentation, the treatment, and outcome of a rare case of descending colon and liver metastases from a lung squamous cell carcinoma in a 72-year-old female, two years after the presentation of her primary tumor are reported. The present study aims to increase the awareness for early diagnosis and treatment of metastatic lung cancer to the gastrointestinal tract.