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IPMN of the Pancreas

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https://www.readbyqxmd.com/read/28416122/patients-with-a-resected-pancreatic-mucinous-cystic-neoplasm-have-a-better-prognosis-than-patients-with-an-intraductal-papillary-mucinous-neoplasm-a-large-single-institution-series
#1
James F Griffin, Andrew J Page, Georges J Samaha, Adrienne Christopher, Feriyl Bhaijee, Maryam K Pezhouh, Niek A Peters, Ralph H Hruban, Jin He, Martin A Makary, Anne Marie Lennon, John L Cameron, Christopher L Wolfgang, Matthew J Weiss
BACKGROUND/OBJECTIVES: Mucinous cystic neoplasms (MCNs) are rare pancreas tumors distinguished from intraductal papillary mucinous neoplasms (IPMNs) by the presence of ovarian-type stroma. Historical outcomes for MCNs vary due to previously ambiguous diagnostic criteria resulting in confusion with IPMNs. This study seeks to characterize and clarify the clinical features and long-term outcomes of MCNs versus IPMNs in the largest single-institution series of pathology-confirmed MCNs to date...
April 11, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/28412205/slc2a1-glut1-expression-in-mural-nodules-of-intraductal-papillary-mucinous-neoplasm-of-the-pancreas
#2
Yasunori Oda, Shinichi Aishima, Koji Shindo, Minoru Fujino, Yusuke Mizuuchi, Masami Hattori, Tetsuyuki Miyazaki, Masao Tanaka, Yoshinao Oda
In intraductal papillary mucinous neoplasms (IPMNs), the presence of a mural nodule showing a papillary or nodular proliferation of tumor cells in the dilated pancreatic duct is an indication for resection of the IPMN. Solute carrier family 2, facilitated glucose transporter member 1, known as Glucose transporter type 1 (SLC2A1/GLUT1) mediates cellular glucose uptake in many carcinomas and is correlated with increased 18F-fluorodeoxyglucose ((18)F-FDG) uptake. We examined SLC2A1/GLUT1 expression in the mural nodules of 180 IPMN specimens to distinguish malignant/benign tumors...
April 12, 2017: Human Pathology
https://www.readbyqxmd.com/read/28407704/delayed-epidural-mucin-collection-after-surgery-for-spinal-metastatic-pancreatic-adenocarcinoma
#3
Dong Ha Kim, Dong Hwan Kim, Hwan Soo Kim, Kyoung Hyup Nam, Byung Kwan Choi, In Ho Han
A rare case of delayed large epidural mucin collection causing neurologic deficit after surgery for metastatic pancreatic cancer is reported. A 65-year-old man presented with intractable upper-thoracic back pain radiating to the chest and gait disturbance. He had a history of subtotal pancreatectomy due to intraductal papillary mucinous neoplasm (IPMN) of the pancreas and concurrent chemotherapy. Eight months after pancreatectomy, multiple thoracic spinal metastasis was diagnosed with routine up positron emission tomography-computed tomography...
March 2017: Korean Journal of Spine
https://www.readbyqxmd.com/read/28403101/prognostic-value-of-histological-subtype-in-intraductal-papillary-mucinous-neoplasm-of-the-pancreas-a-retrospective-analysis-of-outcome-from-one-single-center
#4
Yefei Rong, Dansong Wang, Chen Xu, Yuan Ji, Dayong Jin, Wenchuan Wu, Xuefeng Xu, Tiantao Kuang, Wenhui Lou
We sought to retrospectively analyze the outcomes of patients with intraductal papillary mucinous neoplasm (IPMN) at our pancreatic surgery center, and to evaluate the prognostic value of histological subtype.The clinical data of 121 IPMNs treated in our center between 2005 and 2014 were retrospectively analyzed. Pathological slides were thoroughly reviewed by 2 specialized pathologists.Of the 121 patients, 48, 57, and 16 had main-duct, branch-duct, and mixed type IPMNs, respectively. Forty-one patients had invasive IPMNs...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28398963/molecular-evidence-for-monoclonal-skip-progression-in-main-duct-intraductal-papillary-mucinous-neoplasms-of-the-pancreas
#5
Kenjiro Date, Takao Ohtsuka, Takaaki Fujimoto, Koji Tamura, Hideyo Kimura, Taketo Matsunaga, Naoki Mochidome, Tetsuyuki Miyazaki, Yasuhisa Mori, Yoshinao Oda, Masafumi Nakamura, Masao Tanaka
OBJECTIVE: To clarify clonality of distinct multisegmental main duct (MD)-intraductal papillary mucinous neoplasms (IPMNs) using microarray analysis. BACKGROUND: IPMNs represent a pancreatic ductal cell field defect, which causes multiple occurrences of lesions. In addtion, it has been speculated that MD-IPMNs display features of monoclonal skip progression. METHODS: Total RNA was extracted from fresh-frozen tissue samples of metachronous MD-IPMNs and nonneoplastic pancreas tissue from the same pancreas from two individuals, and whole human genome microarray analysis was performed...
May 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28390868/small-nucleolar-noncoding-rna-snora23-upregulated-in-human-pancreatic-ductal-adenocarcinoma-regulates-expression-of-syne2-to-promote-growth-and-metastasis-of-xenograft-tumors-in-mice
#6
Lin Cui, Kenji Nakano, Sumalee Obchoei, Kiyoko Setoguchi, Masaki Matsumoto, Tsuyoshi Yamamoto, Satoshi Obika, Kazuaki Shimada, Nobuyoshi Hiraoka
BACKGROUND & AIMS: Small nucleolar noncoding RNAs (snoRNAs) regulate function of ribosomes, and specific snoRNAs are dysregulated in some cancer cells. We investigated dysregulation of snoRNAs in pancreatic ductal adenocarcinoma (PDAC) cells. METHODS: We investigated snoRNA expression in PDAC cell lines by cDNA microarray and quantitative reverse transcription (qRT)-PCR. In PDAC (n=133), intraductal papillary mucinous neoplasm (IPMN, n=16), mucinous cystic neoplasm-associated PDAC (n=1), and non-tumor pancreas (n=8) and liver (n=3) tissues from subjects who underwent surgical resection, levels of snoRNA were measured by qRT-PCR and compared with clinicopathological parameters and survival times determined by Kaplan Meier analysis...
April 5, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28369074/annexin-a10-is-a-candidate-marker-associated-with-the-progression-of-pancreatic-precursor-lesions-to-adenocarcinoma
#7
Jianhui Zhu, Jing Wu, Xiucong Pei, Zhijing Tan, Jiaqi Shi, David M Lubman
Annexins are a multigene family of calcium and phospholipid-binding proteins that play important roles in calcium signaling, cell motility, differentiation and proliferation. Our previous mass spectrometry-based proteomics study revealed that annexin A10 (ANXA10) was uniquely overexpressed in pancreatic CD24+ adenocarcinoma cells that were dissected from clinical PDAC tissues but was absent in CD24- adjacent normal cells. The correlation between ANXA10 expression and the progression of pancreatic cancer remains unknown...
2017: PloS One
https://www.readbyqxmd.com/read/28368927/heterotopic-pancreas-of-the-gastrointestinal-tract-and-associated-precursor-and-cancerous-lesions-systematic-pathologic-studies-of-165-cases
#8
Sun-Young Jun, Dahye Son, Mi-Ju Kim, Sung Joo Kim, Soyeon An, Young Soo Park, Sook Ryun Park, Kee Don Choi, Hwoon-Yong Jung, Song Cheol Kim, Jeong Hwan Yook, Byung-Sik Kim, Seung-Mo Hong
Heterotopic pancreas (HP) can be detected by accompanying symptoms or incidentally during gastrointestinal (GI) tract tumor resection. We compared clinicopathologic features among 165 resected HPs (57 gastric [35%], 56 duodenal [34%], 30 omental [18%], and 22 jejunal [13%]). Symptomatic HPs (79/135 GI tract wall HPs, 59%) were larger (P=0.05), more common in younger patients and in a gastric location (both P<0.001), and more frequently associated with lymphoid cuffs (P=0.03) than incidentally found HPs. Gastric/jejunal HPs were more frequently symptomatic (P<0...
March 31, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28342950/progression-of-unresected-intraductal-papillary-mucinous-neoplasms-of-the-pancreas-to-cancer-a-systematic-review-and-meta-analysis
#9
Sang Hyun Choi, Seong Ho Park, Kyung Won Kim, Ja Youn Lee, Sang Soo Lee
BACKGROUND & AIMS: It is not clear how best to manage patients with low-risk intraductal papillary mucinous neoplasms (IPMNs) of the pancreas, because little is known about IPMN progression to cancer. We sought to determine the cumulative incidence of development of pancreatic cancer in persons with unresected IPMNs (particularly low-risk IPMNs). METHODS: We performed a systematic search of the MEDLINE and EMBASE databases, through November 31, 2016, for studies reporting the cumulative incidence of pancreatic cancer in patients with unresected IPMNs, or studies that provided data in sufficient detail for us to calculate cumulative incidence values...
March 22, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28337739/intraductal-neoplasms-of-the-bile-duct-a-new-challenge-to-biliary-tract-tumor-pathology
#10
REVIEW
Yasuni Nakanuma, Katsuhiko Uesaka, Shiro Miyayama, Hiroshi Yamaguchi, Masayuki Ohtsuka
Invasive biliary tract carcinomas are usually tubular adenocaricnomas with abundant desmoplastic reactions and frequent ductal and periductal invasion at the time of the diagnosis. Recently, several intraductal neoplasms of the bile duct, particularly at a pre-invasive stage, have been recognized. They include intraductal papillary neoplasm of the bile duct (IPNB), biliary intraepithelial neoplasm (BilIN), and others, such as intraductal tubulopapillary neoplasm (ITPN) of the bile duct. IPNBs are grossly visible predominantly intraductal-growing papillary neoplasms covered by well-differentiated neoplastic epithelium with fine fibrovascular cores in the dilated bile ducts...
March 24, 2017: Histology and Histopathology
https://www.readbyqxmd.com/read/28260136/cells-of-origin-of-pancreatic-neoplasms
#11
REVIEW
Junpei Yamaguchi, Yukihiro Yokoyama, Toshio Kokuryo, Tomoki Ebata, Masato Nagino
Pancreatic ductal adenocarcinoma (PDAC) is a lethal malignant disease associated with poor prognosis, despite recent medical advances. It is of great importance to understand the initial events and cells of origin of pancreatic cancer to prevent the development and progression of PDAC. There are three distinct precursor lesions that develop into PDAC: pancreatic intraepithelial neoplasms (PanINs), intraductal papillary mucinous neoplasms (IPMNs), and mucinous cystic neoplasms (MCNs). Studies on genetically engineered mouse models have revealed that the initiation and development of these lesions largely depend on genetic alterations...
March 4, 2017: Surgery Today
https://www.readbyqxmd.com/read/28215485/association-of-igg4-response-and-autoimmune-pancreatitis-with-intraductal-papillary-mucinous-neoplasms
#12
Amin A Hedayat, Mikhail Lisovsky, Arief A Suriawinata, Daniel S Longnecker
OBJECTIVES: Concurrent intraductal papillary-mucinous neoplasm (IPMN) and autoimmune pancreatitis (AIP) was observed in a patient (index case) at our institution. Cases of coincidental IPMN and type 1 AIP and concurrent ductal adenocarcinoma (PDAC) and AIP have been previously reported. In this study we evaluate the hypothesis that IPMN elicits an IgG4 response. METHODS: Twenty-one pancreases (including the index case) with IPMN resected at our institution were studied...
February 8, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/28205123/isolated-pancreatic-uncinate-duct-ipmn
#13
Ajay V Maker, Vijay K Maker
The ventral pancreas originally forms as an evagination of the common bile duct at 32 days gestation and its duct, the uncinate duct, eventually rotates with the ventral anlage to join the dorsal pancreas and fuse with the main pancreatic duct. Thus, though often considered a "branch" duct of the pancreas, embryologically, the uncinate duct is the "main" pancreatic duct of the ventral pancreas. This concept is not fully addressed in the current definitions of intraductal papillary mucinous neoplasms of the pancreas (IPMN) where international consensus guidelines consider the main-duct IPMN as high risk for malignancy and most small branch-duct IPMN as low risk for malignancy...
April 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/28197897/middle-segment-preserving-pancreatectomy-for-metachronous-intraductal-papillary-mucinous-neoplasm-after-pancreatoduodenectomy-a-case-report
#14
Mihoko Yamada, Teiichi Sugiura, Yukiyasu Okamura, Takaaki Ito, Yusuke Yamamoto, Ryo Ashida, Katsuhiko Uesaka
Total pancreatectomy has occasionally been performed to treat patients with multiple lesions (such as intraductal papillary mucinous neoplasm (IPMN)) or patients who have undergone repeated pancreatic resection. However, deficiencies of the exocrine and endocrine functions worsen patients' quality of life. Recently, there have been several case reports citing middle segment-preserving pancreatectomy (MSPP) as a safe procedure and beneficial with respect to preservation of the exocrine and endocrine functions...
December 2017: Surgical Case Reports
https://www.readbyqxmd.com/read/28188442/patients-with-mccune-albright-syndrome-have-a-broad-spectrum-of-abnormalities-in-the-gastrointestinal-tract-and-pancreas
#15
Laura D Wood, Michaël Noë, Wenzel Hackeng, Lodewijk A A Brosens, Feriyl Bhaijee, Marija Debeljak, Jun Yu, Masaya Suenaga, Aatur D Singhi, Atif Zaheer, Alison Boyce, Cemre Robinson, James R Eshleman, Michael G Goggins, Ralph H Hruban, Michael T Collins, Anne Marie Lennon, Elizabeth A Montgomery
McCune-Albright Syndrome (MAS) is a rare sporadic syndrome caused by post-zygotic mutations in the GNAS oncogene, leading to constitutional mosaicism for these alterations. Somatic activating GNAS mutations also commonly occur in several gastrointestinal and pancreatic neoplasms, but the spectrum of abnormalities in these organs in patients with MAS has yet to be systematically described. We report comprehensive characterization of the upper gastrointestinal tract in seven patients with MAS and identify several different types of polyps, including gastric heterotopia/metaplasia (7/7), gastric hyperplastic polyps (5/7), fundic gland polyps (2/7), and a hamartomatous polyp (1/7)...
April 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28154275/pancreatic-fistula-extending-into-the-thigh-caused-by-the-rupture-of-an-intraductal-papillary-mucinous-adenoma-of-the-pancreas
#16
Yuki Shimizu, Hiroshi Imaizumi, Hiroshi Yamauchi, Kosuke Okuwaki, Shiro Miyazawa, Tomohisa Iwai, Miyoko Takezawa, Mitsuhiro Kida, Erina Suzuki, Makoto Saegusa, Wasaburo Koizumi
We herein report the first case of a pancreatic fistula extending into the thigh caused by the rupture of an intraductal papillary mucinous neoplasm (IPMN) of the pancreas. An 80-year-old man was suspected to have necrotizing fasciitis because of right femoral pain. Computed tomography showed fluid retention from the pancreatic head to the right iliopsoas muscle and an IPMN at the pancreatic head. The findings of endoscopic retrograde pancreatography led to the suspicion of a minor leak and a pancreatic stent was placed...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28153575/intraductal-papillary-mucinous-neoplasms-of-the-pancreas-correlation-of-helical-computed-tomography-ct-features-with-pathologic-findings
#17
Wanbo Xu, Xiaojin Liu, Jiawen Zhang, Li Yang
RATIONALE AND OBJECTIVES: Intraductal papillary mucinous neoplasms (IPMNs) are precancerous lesions of the pancreas. Computed tomography (CT) has been recommended to screen the malignant potential of IPMNs. However, data evaluating the use of CT to differentiate categories of IPMN based on disease progression are limited. This study aimed to explore the correlation between CT characteristics and pathology in IPMN associated with invasive carcinoma. MATERIALS AND METHODS: A total of 31 patients with intraductal papillary mucinous carcinoma (IPMC) treated at one local regional hospital in Shanghai, China, were enrolled in this study...
January 30, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28144718/diagnostic-performance-and-imaging-features-for-predicting-the-malignant-potential-of-intraductal-papillary-mucinous-neoplasm-of-the-pancreas-a-comparison-of-eus-contrast-enhanced-ct-and-mri
#18
Seo-Youn Choi, Jung Hoon Kim, Mi Hye Yu, Hyo Won Eun, Hae Kyung Lee, Joon Koo Han
PURPOSE: To compare diagnostic performance for prediction of malignant potential in IPMNs between EUS, contrast-enhanced CT and MRI. MATERIALS AND METHODS: 76 patients with IPMN (benign = 37, malignant = 39) underwent EUS, contrast-enhanced CT, and MRI. EUS was analyzed based on formal reports and contrast-enhanced CT and MRI were retrospectively analyzed by two radiologists according to the consensus guidelines 2012. Diagnostic performance and imaging features of malignant IPMNs were analyzed using ROC analysis and multivariate analyses...
January 31, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28133317/-pancreatic-adenosquamous-carcinoma-that-developed-after-resection-of-ipma-in-the-pancreatic-tail
#19
Akinao Kaneta, Takao Tsuchiya, Takahiro Saito, Satoshi Otani, Fujio Ito, Junichi Miura
Pancreatic adenosquamous carcinoma coexisting with intraductal papillary mucinous neoplasm(IPMN)is extremely rare. We report a rare case of pancreatic adenosquamous carcinoma that developed after resection of intraductal papillary mucinous adenoma(IPMA). A 67-year-old man was suspected of having a pancreatic cystic lesion. MRCP demonstrated a cystic lesion measuring 25mm in the pancreatic tail, which had an enhanced nodule. We therefore diagnosed branch duct type IPMN of the pancreas. Although pancreatic juice cytology did not indicate malignancy, we performed laparoscope-assisted distal pancreatectomy...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28133201/-long-term-survival-in-response-to-multimodality-therapy-in-a-patient-with-invasive-pancreatic-cancer-with-cyst-formation
#20
Hironobu Makino, Hisashi Kametaka, Tadaomi Fukada, Kazuhiro Seike, Akio Hasegawa, Masaru Isozaki
The patient was a 61-year-old man. Computed tomography(CT)in April 2007 revealed a pancreatic cyst in the tail of the pancreas. Rapid enlargement was noted in November 2007, and the patient was referred to the surgery department. CT showed a cystic lesion containing a nodular shadow in the pancreatic tail. Tumor marker measurements yielded normal carcinoembryonic antigen(CEA)and carbohydrate antigen 19-9(CA19-9)levels, but the duke pancreatic monoclonal antigen type 2(DUPAN-2)level was elevated. A diagnosis of mucinous cystic neoplasm(MCN)of the pancreas was made in December 2007, and distal pancreatectomy and partial colectomy were performed...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
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