Background /Aims: Endoscopic evaluation of intraductal papillary mucinous neoplasms (IPMNs) is useful in determining whether the lesions are benign or malignant. This study aimed to examine the usefulness of peroral pancreatoscopy (POPS) in determining the prognosis of IPMNs.
Methods POPS with videoscopy was performed using the mother–baby scope technique. After surgery, computed tomography/magnetic resonance cholangiopancreatography or ultrasonography and blood tests were performed every 6 months during the follow-up.
Results A total of 39 patients with main pancreatic duct (MPD)–type IPMNs underwent POPS using a videoscope, and the protrusions in the MPD were observed in 36 patients. The sensitivity and specificity of cytology/biopsy performed at the time of POPS were 85% and 87.5%, respectively. Of 19 patients who underwent surgery, 18 (95%) patients had negative surgical margins and 1 (5%) patient had a positive margin.
Conclusions In IPMNs with dilatation of the MPD, POPS is considered effective if the lesions can be directly observed. The diagnosis of benign and malignant lesions is possible depending on the degree of lesion elevation. However, in some cases, slightly elevated lesions may increase in size during the follow-up or multiple lesions may be simultaneously present; therefore, careful follow-up is necessary.
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Background /Aims: In this study, we aimed to evaluate the predictive value of localized stenosis of the main pancreatic duct (MPD) for early detection of pancreatic cancer.
Methods Among 689 patients who underwent endoscopic retrograde pancreatography from January 2008 to September 2018, 19 patients with MPD findings were enrolled. These patients showed findings for indicating suspicious pancreatic cancer at an early stage (FiCE); FiCE was defined as a single, localized stenosis in the MPD without a detectable mass (using any other imaging methods) and without other pancreatic diseases, such as definite chronic pancreatitis, intraductal papillary mucinous neoplasm, and autoimmune pancreatitis. Final diagnoses were established by examining resected specimens or through follow-up examinations after an interval of >5 years.
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Hearn Kook Kim, M.D., Jae Woo Kim, M.D., Myeong Hun Chae, M.D., Jin Hyung Lee, M.D., Hyun Soo Kim, M.D., Soon Koo Baik, M.D., Mee Yon Cho, M.D.* and Seung Whan Cha, M.D.†
Korean J Gastrointest Endosc 2009;38(4):242-245. Published online April 30, 2009
An intraductal papillary mucinous neoplasm (IPMN) of the pancreas is an uncommon tumor characterized by the production of mucin in the pancreatic duct that occasionally involves the formation of fistulas with surrounding organs, including the stomach, duodenum and common bile duct. The mechanism underlying the formation of such fistulas is direct invasion by a tumor or a combination of high pressure in the main pancreatic duct and inflammatory stimulation. A 73-year-old man was referred to our hospital due to the presence of a gastric ulcer detected on screening gastroscopy. Endoscopic findings showed the presence of a whitish thick mucin coated ulcerative lesion that appeared as a perforation or fistula opening. Abdominal computed tomography and magnetic resonance cholangiopancreatography demonstrated the presence of an IPMN of the pancreas and multiple fistula formation with the neighboring organs. An endoscopic biopsy was carried out to obtain pancreatic tumor tissue through the pancreatogastric fistula and the mass was confirmed as a mucinous adenocarcinoma. To the best of our knowledge, this is the first case of an IPMN associated with a pancreatojejunal fistula and duodenal ulcer bleeding due to fistula formation. (Korean J Gastrointest Endosc 2009;38:242-246)
Seung Geun Lee, M.D., Il Du Kim, M.D., Hye Jeong Lee, M.D., Tae Oh Kim, M.D., Gwang Ha Kim, M.D., Jeong Heo, M.D., Dae Hwan Kang, M.D., Geun Am Song, M.D., Mong Cho, M.D., Jee Yeon Kim, M.D.* and Suk Kim, M.D.†
Korean J Gastrointest Endosc 2006;33(4):257-260. Published online October 30, 2006
There have been an increasing number of reports of intraductal papillary mucinous neoplasm (IPMN) of the pancreas since its first report by Ohhasi et al. in 1982. However, fistula formation associated with IPMN to other organs is rare. A 79-year -old woman visited our hospital due to diarrhea and dyspepsia for 3 months. Abdominal computed tomography and magnetic resonance imaging revealed IPMN of the pancreas and fistula formation in the stomach. Endoscopic retrograde cholangiography after injecting a dye through the pancreatic duct showed dye flowing out into stomach. An endoscopic biopsy was carried out through the pancreatogastric fistula and this tumor was confirmed to be IPMN. We report a case of pancreatogastric fistula associated with IPMN that was confirmed by histology. (Korean J Gastrointest Endosc 2006;33:257261)
Intraductal papillary mucinous neoplasms (IPMNs) are premalignant lesions that require a surgical resection. IPMN can cause abdominal pain or pancreatitis as a result of either mucin production or a papillary growth, resulting in a ductal obstruction. Most IPMNs arise from the main pancreatic duct. However, IPMNs arising from the accessory pancreatic duct are extremely rare. Pancreatic divisum occurs when the ventral and dorsal ducts of the pancreas fail to fuse during organogenesis. It is the most common congenital variant of pancreatic-ductal development, and occurs in approximately 10∼14% of individuals. Although pancreatic divisum has no clinical relevance, some patients present with acute recurrent or chronic pancreatitis. In most cases, it is discovered incidentally during an examination of pancreatitis, and is occasionally accompanied by a pancreatic tumor. We report the first case of IPMN in a patient with an incomplete pancreatic divisum in Korea. (Korean J Gastrointest Endosc 2006;33:191196)
Seung Hoon Baek, M.D., Young Deok Cho, M.D., Jae Young Jang, M.D., Young Koog Cheon, M.D., Young Seok Kim, M.D., Jong Ho Moon, M.D., Yun Soo Kim, M.D., Moon Sung Lee, M.D., Kyung Yul Hur, M.D., Chan Sup Shim, M.D. and Boo Sung Kim, M.D.
Korean J Gastrointest Endosc 2005;31(2):90-96. Published online August 30, 2005
Background /Aims: The treatment of choice of intraductal papillary mucinous neoplasm (IPMN) is partial pancreatic resection with complete excision of this potentially malignant lesion, thus preserving sufficient pancreatic tissue to ensure endocrine and exocrine functions. This strategy, however, requires a reliable preoperative assessment of the highly variable extension of IPMN. We performed this study to determine the role of intraductal ultrasonography (IDUS) in predicting the extension of IPMN and selecting the resection methods of pancreas. Methods: A preoperative assessment of IPMN by IDUS was performed in 12 patients who underwent a surgical resection of IPMN. According to the preoperative localization of IPMN by IDUS, various types of limited pancreatic resections were planned. The histologic examination of the frozen section of the pancreatic cut surface was performed in all patient. In the cases oftumor involvement ascut surface margin, a modification of the planned pancreatic resection was done. Results: Technical success was achieved in all 12 cases (100%). There were positive tumor margin of cut surfaces in 2 patients. Of 10 cases whose frozen tissue evaluation of the pancreatic cut surface had been negative at first, one patieat has turned out to be margin positive in permanent section examination, finally. Overall accuracy of IDUS in predicting the continuous extension of IPMN was 75%. Conclusions: IDUS is a reliable diagnostic modality to guide the resection extent of the pancreas in patients with IPMN. (Korean J Gastrointest Endosc 2005;31:9096)