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Intraductal pancreatic mucinous neoplasm

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https://www.readbyqxmd.com/read/28528374/pancreatic-cysts-and-guidelines
#1
REVIEW
James J Farrell
Pancreatic cysts, especially incidental asymptomatic ones seen on noninvasive imaging such as CT or MR imaging, remain a clinical challenge. The etiology of such cysts may range from benign cysts without any malignant potential such as pancreatic pseudocysts and serous cystadenomas to premalignant or frankly malignant cysts such as mucinous cystic neoplasms, intraductal papillary mucinous neoplasms, cystic degeneration associated with solid tumors such as pancreatic ductal adenocarcinoma or pancreatic endocrine neoplasms, and solid pseudopapillary neoplasms...
May 20, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28512773/natural-history-of-intraductal-papillary-mucinous-neoplasm-and-non-neoplastic-cyst-long-term-imaging-follow-up-study
#2
Yuya Hisada, Naoyoshi Nagata, Koh Imbe, Yusuke Takasaki, Katsunori Sekine, Tsuyoshi Tajima, Mikio Yanase, Kazuma Fujimoto, Junichi Akiyama, Naomi Uemura
Pancreatic cyst is being detected with increasing frequency because of widespread use of sensitive abdominal imaging tests such as multidetector computed tomography (MDCT) and magnetic resonance imaging (MRI) [1, 2]. One study reported an incidental detection rate of 1% on MDCT studies performed for any reason [3]. Not only gastroenterologists, but also other physicians and surgeons, frequently encounter incidental pancreatic cyst. However, it is unclear how often and how long we should follow up patients with pancreatic cyst...
May 17, 2017: Journal of Hepato-biliary-pancreatic Sciences
https://www.readbyqxmd.com/read/28511236/long-term-outcomes-after-endoscopic-ultrasound-guided-ablation-of-pancreatic-cysts
#3
Jun-Ho Choi, Dong Wan Seo, Tae Jun Song, Do Hyun Park, Sang Soo Lee, Sung Koo Lee, Myung-Hwan Kim
Background and study aims The aim of this study was to investigate the long-term outcomes after endoscopic ultrasound (EUS)-guided pancreatic cyst ablation. Patients and methods In a single-center, prospective study, 164 patients with pancreatic cysts underwent EUS-guided cyst ablation using ethanol with paclitaxel. The inclusion criteria were as follows: unilocular or oligolocular cysts; clinically indeterminate cysts that required EUS fine-needle aspiration; and/or cysts that grew during the observation period...
May 16, 2017: Endoscopy
https://www.readbyqxmd.com/read/28502930/branch-duct-intraductal-papillary-mucinous-neoplasms-of-the-pancreas-involving-type-1-localized-autoimmune-pancreatitis-with-normal-serum-igg4-levels-successfully-diagnosed-by-endoscopic-ultrasound-guided-fine-needle-aspiration-and-treated-without-pancreatic
#4
Shinsuke Koshita, Yutaka Noda, Kei Ito, Yoshihide Kanno, Takahisa Ogawa, Kaori Masu, Yoshiharu Masaki, Hiroaki Kusunose, Toshitaka Sakai, Toji Murabayashi, Sho Hasegawa, Fumisato Kozakai, Jun Horaguchi, Takashi Sawai
We herein report a 68-year-old man with branch duct intraductal papillary mucinous neoplasms of the pancreas (BD-IPMNs) involving type 1 localized autoimmune pancreatitis (AIP) with normal serum IgG4 levels. Although he was referred to our medical center due to suspicion of pancreatic cancer concomitant with BD-IPMNs, endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) revealed a mass suspected of being pancreatic cancer to be type 1 AIP. Steroid administration notably reduced the mass. Although the clinical diagnosis of pancreatic masses in patients with IPMN can be occasionally challenging, performing a pathological examination by EUS-FNA may prevent unnecessary pancreatic surgery in cases of possible AIP...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28500587/insights-into-the-pathogenesis-of-pancreatic-cystic-neoplasms
#5
REVIEW
Vrishketan Sethi, Bhuwan Giri, Ashok Saluja, Vikas Dudeja
With the current epidemic of diagnosed pancreatic cystic neoplasms on the rise, a substantial amount of work has been done to unravel their biology, thus leading to implications on clinical decision making. Recent genetic profiling of resected human specimens has identified alterations in signaling pathways involving KRAS and GNAS signaling as early events in the pathogenesis of intraductal pancreatic mucinous neoplasms. Progressively, mutations in genes such as TP53, SMAD4, RNF43, and others are thought to characterize invasive and advanced lesions...
May 12, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28476582/enhanced-karyopherin-%C3%AE-2-expression-is-associated-with-carcinogenesis-in-patients-with-intraductal-papillary-mucinous-neoplasms
#6
Norio Kubo, Kenichiro Araki, Bolag Altan, Kouki Hoshino, Norihiro Ishii, Mariko Tsukagoshi, Takamichi Igarashi, Akira Watanabe, Toshihide Kato, Keitaro Hirai, Takehiko Yokobori, Fumiyoshi Saito, Hideki Suzuki, Hiroyuki Kuwano, Ken Shirabe
BACKGROUND/OBJECTIVES: Intraductal papillary mucinous neoplasms (IPMN) can become malignant. Karyopherin-α2 (KPNA2) plays a central role in nucleocytoplasmic transport and is associated with various types of cancer. The current study examined pancreatic KPNA2 expression in cancer patients and evaluated its association with clinicopathological factors, cancer cell proliferation. METHODS: KPNA2 expression was investigated by immunohistochemistry in 40 surgically resected IPMN samples and its association with clinicopathological factors and Ki-67 expression were examined...
April 23, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/28464920/collision-of-ductal-adenocarcinoma-and-neuroendocrine-tumor-of-the-pancreas-a-case-report-and-review-of-the-literature
#7
Simone Serafini, Gianfranco Da Dalt, Gioia Pozza, Stella Blandamura, Michele Valmasoni, Stefano Merigliano, Cosimo Sperti
BACKGROUND: Simultaneous occurrence of exocrine and neuroendocrine tumors of the pancreas is very infrequent. We report a patient with an endocrine tumor in the pancreatic-duodenal area and extensive exocrine carcinoma involving the whole pancreas. CASE PRESENTATION: A 69-year-old woman was hospitalized in May 2016 for epigastric pain and weight loss. Her past medical history revealed an undefined main pancreatic duct dilation that was subsequently confirmed at CT scan (23 mm) and endoscopic ultrasound...
May 2, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28463669/pancreatic-cystic-lesions-diagnostic-management-and-indications-for-operation-part-i
#8
Ferdinand Bauer
We notice an increasing frequency in the detection and evaluation of pancreatic cystic lesions (PCLs) over the last three decades. They show awide spectrum of imaging and clinical features. The diagnosis and discrimination of these lesions are very important because of the risk for concurrent or later development of malignancy. The main reason is the increased awareness of these lesions and the extensive use of cross-sectional imaging, an always improving technique (1). Commonly, PCLs are diagnosed incidentally during investigation for often unrelated and nonspecific abdominal complaints using state-of-the art abdominal imaging (CT, MRT)...
March 2017: Chirurgia
https://www.readbyqxmd.com/read/28454324/stathmin-1-promotes-the-proliferation-and-malignant-transformation-of-pancreatic-intraductal-papillary-mucinous-neoplasms
#9
Akira Watanabe, Kenichiro Araki, Takehiko Yokobori, Bolag Altan, Norihiro Ishii, Mariko Tsukagoshi, Norio Kubo, Fumiyoshi Saito, Hideki Suzuki, Hiroyuki Kuwano
Pancreatic intraductal papillary mucinous neoplasms (IPMNs) are a type of pancreatic tumor, which have been identified following improvements in diagnostic imaging. However, the malignant transformation of IPMN has been difficult to diagnose clinically. To date, the mechanisms driving the progression of IPMN to cancer remain to be fully elucidated. The present study focused on Stathmin 1 (STMN1), a protein that is associated with the development of various types of cancer. The expression of STMN1 was examined immunohistochemically in tissues from cases of IPMN...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28444494/imaging-of-pancreatic-cystic-lesions-with-confocal-laser-endomicroscopy-an-ex-vivo-pilot-study
#10
Abdurrahman Kadayifci, Mustafa Atar, Michelle Yang, Carlos Fernandez-Del Castillo, Mari Mino-Kenudson, William R Brugge
BACKGROUND: The differential diagnosis of pancreatic cystic lesions (PCLs) is an increasingly common clinical challenge. Confocal laser endomicroscopy (CLE) may differentiate PCLs by imaging of the cyst wall. However, clinical experience is still limited, and better image definition and characterization of the cyst wall in a spectrum of cysts are needed. This experimental study aimed to expose detailed imaging characteristics of PCLs by CLE. METHODS: Patients who underwent surgery of a PCL were enrolled...
April 25, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28443205/a-pilot-study-of-radiologic-measures-of-abdominal-adiposity-weighty-contributors-to-early-pancreatic-carcinogenesis-worth-evaluating
#11
Jennifer B Permuth, Jung W Choi, Dung-Tsa Chen, Kun Jiang, Gina DeNicola, Jian-Nong Li, Domenico Coppola, Barbara A Centeno, Anthony Magliocco, Yoganand Balagurunathan, Nipun Merchant, Jose G Trevino, Daniel Jeong
OBJECTIVE: Intra-abdominal fat is a risk factor for pancreatic cancer (PC), but little is known about its contribution to PC precursors known as intraductal papillary mucinous neoplasms (IPMNs). Our goal was to evaluate quantitative radiologic measures of abdominal/visceral obesity as possible diagnostic markers of IPMN severity/pathology. METHODS: In a cohort of 34 surgically-resected, pathologically-confirmed IPMNs (17 benign; 17 malignant) with preoperative abdominal computed tomography (CT) images, we calculated body mass index (BMI) and four radiologic measures of obesity: total abdominal fat (TAF) area, visceral fat area (VFA), subcutaneous fat area (SFA), and visceral to subcutaneous fat ratio (V/S)...
February 2017: Cancer Biology & Medicine
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
#12
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/28413390/a-serous-cystic-neoplasm-of-the-pancreas-coexisting-with-high-grade-pancreatic-intraepithelial-neoplasia-mimicking-an-intraepithelial-papillary-mucinous-neoplasm-a-case-report
#13
Aya Kawanishi, Kenichi Hirabayashi, Hirotaka Kono, Yumi Takanashi, Atsuko Hadano, Yohei Kawashima, Masami Ogawa, Yoshiaki Kawaguchi, Misuzu Yamada, Toshio Nakagohri, Naoya Nakamura, Tetsuya Mine
Serous cystic neoplasms of the pancreas are rare exocrine pancreatic neoplasms, most of which are benign and do not communicate with the pancreatic duct. Pancreatic intraepithelial neoplasm (PanIN) is considered a precursor of ductal adenocarcinoma that is microscopically recognized in pancreatic ducts. A 67-year-old Japanese woman presented with a 10-mm multilocular cystic lesion at the pancreatic body. Magnetic resonance pancreatography showed stenosis of the main pancreatic duct at the pancreatic body and dilatation of the distal side of the main pancreatic duct...
January 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/28412205/slc2a1-glut1-expression-in-mural-nodules-of-intraductal-papillary-mucinous-neoplasm-of-the-pancreas
#14
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
#15
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/28404017/dna-testing-of-pancreatic-cyst-fluid-is-it-ready-for-prime-time
#16
REVIEW
Aatur D Singhi, Marina N Nikiforova, Kevin McGrath
Pancreatic cysts are a clinical quandary in both diagnosis and management. Although many cysts, such as pseudocysts and serous cystadenomas, are benign and can be monitored clinically, mucinous cysts, such as intraductal papillary mucinous neoplasms and mucinous cystic neoplasms, have the potential to progress to pancreatic cancer. Considering the poor prognosis of pancreatic cancer, the detection of a pancreatic cyst can be a source of anxiety for both the patient and physician. This diagnosis in turn can lead to expensive, invasive, and even harmful surveillance and treatment options...
January 2017: Lancet. Gastroenterology & Hepatology
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
#17
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
#18
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
#19
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/28383565/diversity-of-precursor-lesions-for-pancreatic-cancer-the-genetics-and-biology-of-intraductal-papillary-mucinous-neoplasm
#20
Krushna C Patra, Nabeel Bardeesy, Yusuke Mizukami
Pancreatic ductal adenocarcinoma (PDA), one of the most lethal cancers worldwide, is associated with two main types of morphologically distinct precursors-pancreatic intraepithelial neoplasia (PanIN) and intraductal papillary mucinous neoplasm (IPMN). Although the progression of PanIN into invasive cancer has been well characterized, there remains an urgent need to understand the biology of IPMNs, which are larger radiographically detectable cystic tumors. IPMNs comprise a number of subtypes with heterogeneous histopathologic and clinical features...
April 6, 2017: Clinical and Translational Gastroenterology
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