Fig. 6.

Endosonography guided nCLE of a mediastinal lymph node metastasis of a tumour in the left upper lobe. a PET-CT scan showing fludeoxyglucose-avid lymph node station 4 L, and the primary lung tumour (T). b EUS image showing an enlarged lymph nodes at station 4 L. c Real-time nCLE image of lymph node station 4 L showing large pleomorphic cells and dark clumps recognized as malignant cells (M). d Fine needle aspirate showing malignant cells of squamous cell carcinoma (Wijmans et al. [26]). 10, lymph node station 10 L (left); Aa, ascending aorta; Ad, descending aorta.