Muscular metastasis from gastric cancer

The association between gastric cancer and muscle metastasis is extremely rare. Few cases have been reported in the literature. We report a case of a 68-year-old man, with a diagnosis of gastric adenocarcinoma by endoscopy and biopsy. A painful nodule on the right thigh became noticeable during chemotherapy sessions, where positron emission tomography and percutaneous biopsy diagnosed a muscle metastasis of gastric adenocarcinoma. This report demonstrates the importance of further investigation of muscle lesion in patients with gastrointestinal cancer and how we can diagnose and treat these lesions.