 This study found that pancreatic duct lavage cytology combined with a cell block method, PLCCB, had high accuracy in detecting malignant tumors in patients with possible pancreatic ductal adenocarcinomas, DAX, including pancreatic carcinoma and situ. The study also showed that four patients developed post-procedural pancreatitis, but this resolved with conservative treatment. Overall, PLCCB appears to be a safe and effective procedure for identifying malignant tumors in patients with possible DAX. This article was authored by Hiroaki Kiusinos, Shinsuke Koshida, Yoshihida Kano, and others.