ABSTRACT

Metastasis of colorectal carcinomas to mediastinal lymph nodes is extremely rare. In this study, it is aimed to share our approach to mediastinal lymph nodes for treating colorectal carcinoma and lung carcinoma detected synchronously. Extended right hemicolectomy was performed when ileus was detected in the patient who presented to the emergency department with the complaint of abdominal pain. The pathological result was reported as signet ring cell carcinoma. The mass in the lung covered >80% of the right lower lobe. Right lower lobectomy and mediastinal lymph node dissection were performed. The pathological result was reported as large cell lung carcinoma. Colorectal carcinoma metastases were detected in subpleural tumor-like foci and mediastinal lymph nodes. There is no consensus on the treatment strategies for such cases. We believe that performing routine mediastinal lymph node dissection is important for determining prognosis and postoperative treatment strategies.