Concerning nCLE, these results were consistent with those from a previous study from Napoléon et al. [21], which reported excellent diagnostic performance for confirming diagnosis of serous cystadenoma, which surpassed that of cystic fluid carcinoembryonic antigen (CEA) measurement for the diagnosis of large, single, noncommunicating cystic pancreatic lesions. The gene discussed is CEACAM5; the disease is serous cystadenoma.