Application of endoscopic ultrasound‐guided‐fine needle aspiration combined with cyst fluid analysis for the diagnosis of mediastinal cystic lesions

Mediastinal cystic lesions account for approximately 15–20% of all mediastinal masses and are difficult to differentiate because of similar imaging manifestation. The aim of this study was to differentiate mediastinum cystic lesions through endoscopic ultrasound‐guided‐fine needle aspiration (EUS‐FNA) and parameters from cyst‐fluid analysis