A Rare Pancreatic Tail Metastasis from Squamous Cell Lung Carcinoma Diagnosed by EUS-FNB and a Small Review of the Literature.

Differential diagnosis of pancreatic lesions is really challenging, especially when the patient is diagnosed with primary cancer at another site. In this case report, we managed to histologically confirm pancreatic metastasis from squamous cell lung carcinoma, which is a very rare entity, using endoscopic ultrasound fine needle biopsy.