Observed on MRCP soon after 18 (E) and 21 months (F). On the other hand, no tumor lesions had been detected on CT (G) or EUS detected on CT (G) or EUS images. Endoscopic retrograde cholangiopancreatography was performed as malignancy was images. Endoscopic retrograde cholangiopancreatography was performed as malignancy was suspected. Pancreatic juice suspected. Pancreatic juice cytology was not performed because of failure to cannulate in to the MPD. Despite the lack of cytology wasdiagnosis, the lesion wasof failure immediately after 23 months due to doable malignancy. The final diagnosis was a definitive not performed since resected to cannulate in to the MPD. Regardless of the lack of a definitive diagnosis, the lesion was resected just after 23 months becauseonly spread malignancy. in the pancreatic head (Tis N0 M0, stage 0, final tumor high-grade PanIN of the MPD, which had of probable within the MPD The final diagnosis was high-grade PanIN of your MPD, which 0 mm (CIS), H), in addition to retention cysts in the pancreaticM0, stage 0,patient was diagnosed at 23 months after with size: had only spread inside the MPD in the pancreatic head (Tis N0 head. This final tumor size: 0 mm (CIS), (H)), along the first MRCP (I). retention cysts inside the pancreatic head. This patient was diagnosed at 23 months following the very first MRCP (I). Abbreviations: CIS, carcinoma in situ; EUS, endoscopic ultrasound; CE, contrast-enhanced; CT, computed tomography; IPMN, intraductal Abbreviations: CIS, carcinoma in situ; EUS, endoscopic ultrasound; CE, contrast-enhanced; CT, computed tomography; papillary mucinous neoplasm; MPD, main pancreatic duct; MRCP, magnetic resonance cholangiopancreatography; PanIN, IPMN, intraductal papillary mucinous neoplasm; MPD, main pancreatic duct; MRCP, magnetic resonance cholangiopancreapancreatic intraepithelial Perhexiline MedChemExpress neoplasia. tography; PanIN, pancreatic intraepithelial neoplasia.Diagnostics 2021, 11,Diagnostics 2021, 11, x FOR PEER REVIEW7 of7 ofFigure four. A three mm lesion over a 50-month observation period (Case four in Supplementary Table S1). The case of a 73-yearold lady who had a history of idiopathic acute pancreatitis at 4 years prior is presented. No MPD abnormalities have been Figure 4. A three mm lesion more than a 50-month observation period (Case 4 in Supplementary Table1). The case of a 73-yearobserved on MRCP (A);history of idiopathic acute pancreatitis at 4 years duct dilation were No MPDin the pancreatic tail having said that, solitary MPD and branch pancreatic prior is presented. evident abnormalities were old woman who had a (yellow arrowMRCP first-time MRCP, (B)), MPD and no tumor lesions had been detectedwere evident in the pancreatic tail head, (A); even so, solitary despite the fact that branch pancreatic duct dilation on CT (C). The MPD abnormality observed on graduallyarrow head,(D,E), and MPD stenosis was detected in the Coelenterazine supplier starting ofdetected MPD dilation just after 47 months (green (yellow progressed first-time MRCP, B), although no tumor lesions had been solitary on CT (C). The MPD abnormality steadily progressed (D ), and was stenosis on detected in the starting of solitary MPD dilation just after 47 months arrow head, (F)). No tumor lesion MPDobserved wasCT or EUS pictures. ERCP detected localized irregular stenosis with (green arrow head, F). No tumor lesion cytology findings. Moreover, a tiny lesion was detected on irregular stenosis suspected malignancy by pancreatic juicewas observed on CT or EUS images. ERCP detected localizedCT right after 49 months witharrow head, (G)). Hence, surgery was undertaken af.