Small peripheral typical carcinoid of the lung combined with mediastinal lymph node metastases: A case report

Abstract

A 58-year-old female presented to our hospital with a chief complaint of an abnormal shadow in the right upper lobe of the lung pointed out by CT during a health check. PET-CT disclosed a slight FDG accumulation at the same site. QuantiFERON-TB2G and β-D-glucan were negative. Under a diagnosis of adenocarcinoma (cT1N0M0, Stage IA), a right upper lobectomy and lymphadenectomy were performed by video-assisted thoracic surgery. The final pathological diagnosis was a typical carcinoid, 8×8×6 mm in diameter, metastasizing to the mediastinal lymph nodes (pT1N2M0, Stage III A). Lung carcinoid is classified into two types: typical and atypical. Typical type carcinoid is recognized as a case of small carcinoid low-grade malignancy. Herein, we report a case of small carcinoid with N2 lymph node metastases.