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Pancreatic cancer mri

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https://www.readbyqxmd.com/read/28540626/cross-sectional-prevalence-of-pancreatic-cystic-lesions-in-patients-with-acromegaly-a-single-center-experience
#1
Yukiko Odake, Hidenori Fukuoka, Masaaki Yamamoto, Yoshifumi Arisaka, Junya Konishi, Kenichi Yoshida, Ryusaku Matsumoto, Hironori Bando, Kentaro Suda, Hitoshi Nishizawa, Genzo Iguchi, Shozo Yamada, Wataru Ogawa, Yutaka Takahashi
PURPOSE: Acromegaly is a disease associated with an increased risk for several kinds of neoplasms including colon and thyroid cancer. Although the association between acromegaly and pancreatic neoplasms has not been elucidated, it has recently been reported that GNAS gene mutations were found in 58% of intraductal papillary mucinous neoplasms (IPMNs), which are representative pancreatic cystic lesions, suggesting a link between IPMNs and acromegaly. To assess the prevalence of pancreatic cystic lesions in patients with acromegaly, we performed a retrospective cross-sectional single institute study...
May 24, 2017: Pituitary
https://www.readbyqxmd.com/read/28529645/tumor-penetrating-theranostic-nanoparticles-for-enhancement-of-targeted-and-image-guided-drug-delivery-into-peritoneal-tumors-following-intraperitoneal-delivery
#2
Ning Gao, Erica N Bozeman, Weiping Qian, Liya Wang, Hongyu Chen, Malgorzata Lipowska, Charles A Staley, Y Andrew Wang, Hui Mao, Lily Yang
The major obstacles in intraperitoneal (i.p.) chemotherapy of peritoneal tumors are fast absorption of drugs into the blood circulation, local and systemic toxicities, inadequate drug penetration into large tumors, and drug resistance. Targeted theranostic nanoparticles offer an opportunity to enhance the efficacy of i.p. therapy by increasing intratumoral drug delivery to overcome resistance, mediating image-guided drug delivery, and reducing systemic toxicity. Herein we report that i.p. delivery of urokinase plasminogen activator receptor (uPAR) targeted magnetic iron oxide nanoparticles (IONPs) led to intratumoral accumulation of 17% of total injected nanoparticles in an orthotopic mouse pancreatic cancer model, which was three-fold higher compared with intravenous delivery...
2017: Theranostics
https://www.readbyqxmd.com/read/28510280/modelling-the-iatrogenic-pancreatic-cancer-risk-after-islet-autotransplantation-in-mouse
#3
E Dugnani, V Pasquale, D Liberati, A Citro, E Cantarelli, S Pellegrini, P Marra, T Canu, G Balzano, M Scavini, A Esposito, C Doglioni, L Piemonti
Iatrogenic pancreatic cancer metastasis after islet infusion is a potential risk of islet autotransplantation performed after pancreatectomy. To model this risk islets and/or pancreatic exocrine clusters obtained from a genetically engineered mouse model for pancreatic ductal adenocarcinoma (the LSL-Kras(G12D/+) ;LSL-Trp53(R172H/+) ;Pdx-1-Cre, termed KPC mouse) were transplanted via the portal vein in syngeneic wild type (WT) severely diabetic recipients in the following treatment groups: group A (n=11) received KPC exocrine clusters in volume equal to 250 equivalent islets (IEQs); group B (n=12) received 250 WT IEQs mixed with KPC exocrine clusters (1:1 volume ratio); group C (n=5) received 250 KPC IEQs and group D (n=7) received 250 wild type IEQs...
May 16, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28493831/multi-modality-imaging-monitored-creation-of-rat-orthotopic-pancreatic-head-cancer-with-obstructive-jaundice
#4
Zhibin Bai, Yaoping Shi, Jianfeng Wang, Longhua Qiu, Gaojun Teng, Feng Zhang, Xiaoming Yang
PURPOSE: To investigate the feasibility of using multi-modality imaging to monitor the creation of rat models with orthotopic pancreatic head cancer with obstructive jaundice. RESULTS: 27 of 52 rats (51.92%) developed pancreatic head cancer. The tumor formation rate was significantly higher in the animal group receiving bioluminescent tumor, compared to the group receiving non-bioluminescent donor tumors [78.1% (25/32 rats) vs 10.0% (2/20 rats), P = 0.0001]. Both ultrasound imaging and MRI clearly characterized the orthotopic tumors...
April 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28470823/modifications-of-pancreatic-diffusion-mri-by-tissue-characteristics-what-are-we-weighting-for
#5
REVIEW
Noam Nissan
Diffusion-weighted imaging holds the potential to improve the diagnosis and biological characterization of pancreatic disease, and in particular pancreatic cancer, which exhibits decreased values of the apparent diffusion coefficient (ADC). Yet, variable and overlapping ADC values have been reported for the healthy and the pathological pancreas, including for cancer and other benign conditions. This controversy reflects the complexity of probing the water-diffusion process in the pancreas, which is dependent upon multiple biological factors within this organ's unique physiological environment...
May 4, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28464866/effect-of-region-of-interest-size-on-adc-measurements-in-pancreatic-adenocarcinoma
#6
Chao Ma, Xiaoyu Guo, Li Liu, Qian Zhan, Jing Li, Chengcheng Zhu, Li Wang, Jing Zhang, Xu Fang, Jianxun Qu, Shiyue Chen, Chengwei Shao, Jian-Ping Lu
BACKGROUND: To investigate the influence of region of interest (ROI) size on tumor apparent diffusion coefficient (ADC) measurements in pancreatic cancer. METHODS: The study population consisted of 64 patients with pathologically proved pancreatic ductal adenocarcinomas (PDACs), who underwent preoperative magnetic resonance imaging (MRI) examinations including diffusion-weighted imaging (DWI). The tumor ADCs were measured by two independent readers using six round ROIs with sizes ranging from 20 to 214 mm(2) (9 to 97 pixels) in both the six separate measurements...
May 2, 2017: Cancer Imaging: the Official Publication of the International Cancer Imaging Society
https://www.readbyqxmd.com/read/28415140/imaging-modalities-for-characterising-focal-pancreatic-lesions
#7
REVIEW
Lawrence Mj Best, Vishal Rawji, Stephen P Pereira, Brian R Davidson, Kurinchi Selvan Gurusamy
BACKGROUND: Increasing numbers of incidental pancreatic lesions are being detected each year. Accurate characterisation of pancreatic lesions into benign, precancerous, and cancer masses is crucial in deciding whether to use treatment or surveillance. Distinguishing benign lesions from precancerous and cancerous lesions can prevent patients from undergoing unnecessary major surgery. Despite the importance of accurately classifying pancreatic lesions, there is no clear algorithm for management of focal pancreatic lesions...
April 17, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28414996/a-case-of-multiple-synchronous-quadruple-cancers-of-the-stomach-sigmoid-colon-rectum-and-pancreas
#8
Atsushi Nanashima, Tetsuro Tominaga, Takashi Nonaka, Kouki Wakata, Masaki Kunizaki, Shuichi Tobinaga, Yorihisa Sumida, Shigekazu Hidaka, Naoe Kinoshita, Terumitsu Sawai, Takeshi Nagayasu
INTRODUCTION: Multiple primary neoplasms are relatively rare, but their incidence has increased because of aging and improvements in diagnostic imaging. PRESENTATION OF CASE: A 67-year-old man presented with epigastric pain. On upper gastrointestinal endoscopy, an ulcer was seen at the gastric angle, and biopsy showed moderately differentiated adenocarcinoma (AC). Colonoscopy demonstrated a 15-mm lesion in the sigmoid colon and a submucosal lesion in the lower rectum...
April 2, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28407704/delayed-epidural-mucin-collection-after-surgery-for-spinal-metastatic-pancreatic-adenocarcinoma
#9
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/28390098/noninvasive-characterization-of-pancreatic-tumor-mouse-models-using-magnetic-resonance-imaging
#10
Navid Farr, Yak-Nam Wang, Samantha D'Andrea, Kayla M Gravelle, Joo Ha Hwang, Donghoon Lee
The preclinical models of pancreatic adenocarcinoma provide an alternative means for determining the mechanisms of malignancy and possibilities for treatments, thus representing a resource of immense potential for cancer treatment in medicine. To evaluate different tumor models, quantifiable magnetic resonance imaging (MRI) techniques can play a significant role in identifying valuable in vivo biomarkers of tumor characteristics. We characterized three models of pancreatic cancer with multiparametric MRI techniques...
May 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28375667/addition-of-mri-for-ct-based-pancreatic-tumor-delineation-a-feasibility-study
#11
Oliver J Gurney-Champion, Eva Versteijne, Astrid van der Horst, Eelco Lens, Heidi Rütten, Hanne D Heerkens, Gabriel M R M Paardekooper, Maaike Berbee, Coen R N Rasch, Jaap Stoker, Marc R W Engelbrecht, Marcel van Herk, Aart J Nederveen, Remy Klaassen, Hanneke W M van Laarhoven, Geertjan van Tienhoven, Arjan Bel
PURPOSE: To assess the effect of additional magnetic resonance imaging (MRI) alongside the planning computed tomography (CT) scan on target volume delineation in pancreatic cancer patients. MATERIAL AND METHODS: Eight observers (radiation oncologists) from six institutions delineated the gross tumor volume (GTV) on 3DCT, and internal GTV (iGTV) on 4DCT of four pancreatic cancer patients, while MRI was available in a second window (CT + MRI). Variations in volume, generalized conformity index (CIgen), and overall observer variation, expressed as standard deviation (SD) of the distances between delineated surfaces, were analyzed...
April 4, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28373919/complete-response-after-treatment-with-neoadjuvant-chemoradiation-with-prolonged-chemotherapy-for-locally-advanced-unresectable-adenocarcinoma-of-the-pancreas
#12
Tiffany A Pompa, William F Morano, Chetan Jeurkar, Hui Li, Suganthi Soundararajan, Jaganmohan Poli, Wilbur B Bowne, Michael Styler
Surgery is the only chance for cure in pancreatic ductal adenocarcinoma. In unresectable, locally advanced pancreatic cancer (LAPC), the National Comprehensive Cancer Network (NCCN) suggests chemotherapy and consideration for radiation in cases of unresectable LAPC. Here we present a rare case of unresectable LAPC with a complete histopathological response after chemoradiation followed by surgical resection. A 54-year-old female presented to our clinic in December 2013 with complaints of abdominal pain and 30-pound weight loss...
2017: Case Reports in Oncological Medicine
https://www.readbyqxmd.com/read/28370884/detecting-in-vivo-urokinase-plasminogen-activator-activity-with-a-catalycest-mri-contrast-agent
#13
Sanhita Sinharay, Christine M Howison, Amanda F Baker, Mark D Pagel
Urokinase plasminogen activator (uPA) promotes tumor invasion and metastasis. The monitoring of uPA activity using molecular imaging may have prognostic value and be predictive for response to anti-cancer therapies. However, the detection of in vivo enzyme activity with molecular imaging remains a challenge. To address this problem, we designed a nonmetallic contrast agent, GR-4Am-SA, that can be detected with chemical exchange saturation transfer (CEST) MRI. This agent has a peptide that is cleaved by uPA, which causes a CEST signal at 5...
March 29, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28348938/giardia-filled-pancreatic-mass-in-a-patient-with-recently-treated-t-cell-rich-b-cell-lymphoma
#14
Raj Shah, Talal Asif, Richard Johnson
Giardia lamblia (G. lamblia)-filled pancreatic masses are a rarely reported entity. Furthermore, there are only a few case reports in literature on the association of these masses with cancer. We present a case of a G. lamblia-filled pancreatic cystic mass in a patient with a history of T-cell-rich B-cell lymphoma. The authors performed a PubMed search using (Medical Subject Headings) MeSH terms of pancreas, mass, Giardia, and lymphoma.  A 53-year-old male with past medical and surgical history of T-cell-rich B-cell lymphoma, status post R-CHOP (cyclophosphamide, doxorubicin, vincristine, and prednisone plus rituximab) therapy with positron emission tomography (PET) scan showing no residual disease, essential hypertension, and alcohol use disorder presented to the emergency department (ED) with epigastric pain and nausea for one week...
February 9, 2017: Curēus
https://www.readbyqxmd.com/read/28337383/pancreatic-cancer-screening-in-different-risk-individuals-with-family-history-of-pancreatic-cancer-a-prospective-cohort-study-in-taiwan
#15
Ming-Chu Chang, Chih-Horng Wu, Shih-Hung Yang, Po-Chin Liang, Bang-Bin Chen, I-Shiow Jan, Yu-Ting Chang, Yung-Ming Jeng
Pancreatic cancer (PC) is usually diagnosed at advanced stage. Our aim was to investigate the risk of malignant and premalignant pancreatic lesions in individuals with family history of PC. Individuals at risk of PC were enrolled prospectively in a screening program in Taiwan. All risk individuals received genetic testing of cationic trypsinogen (PRSS1) gene and the serine protease inhibitor Kazal type 1 (SPINK1) gene. They were stratified into three risk groups (high, moderate, and low) based on the family history and genetic testing...
2017: American Journal of Cancer Research
https://www.readbyqxmd.com/read/28321355/a-rare-presentation-of-sarcoidosis-as-a-pancreatic-head-mass
#16
Shruti Mony, Pradnya D Patil, Rebekah English, Ananya Das, Daniel A Culver, Tanmay S Panchabhai
Sarcoidosis is a multisystem granulomatous syndrome of unknown etiology with noncaseating epithelioid granulomas being the pathognomonic pathological finding. Sarcoidosis most commonly involves the lungs and involvement of the gastrointestinal (GI) tract is uncommon. Pancreatic sarcoidosis is very rare, especially when it is the presenting feature of sarcoidosis and can masquerade as pancreatic cancer. Tissue infiltration in pancreatic sarcoidosis can lead to either a diffuse nodular appearance or a mass-like lesion...
2017: Case Reports in Pulmonology
https://www.readbyqxmd.com/read/28316225/-the-clinical-impact-of-artery-first-approach-combined-with-vascular-resection-and-reconstruction-in-the-treatment-of-pancreatic-head-carcinoma
#17
J L Huang, W G Li, F Z Chen, Z J Su, F M Li, B Liu
Objective: To evaluate the application of artery first, combined vascular resection and reconstruction in the treatment of pancreatic head carcinoma. Methods: The clinical data of 13 patients with pancreatic head cancer were retrospectively analyzed from February 2014 to March 2016 in the Affiliated Hospital of Xiamen University. Preoperative computed tomography of high resolution layer or magnetic resonance imaging examination demonstrated pancreatic head carcinoma, as well as close adhesion, stenosis, compression or displacement of superior mesenteric vein or portal vein wall...
March 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28303374/potentially-reversible-acute-cerebellar-toxicity-associated-with-minnelide
#18
Sara Khanipour Roshan, Anthony D Spano, Alexander M McKinney, David R Nascene
PURPOSE: Minnelide is an experimental antineoplastic agent that is currently the subject of a phase 1 clinical trial for the treatment of pancreatic and gastrointestinal malignancies. In this study, we documented two cases of reversible acute cerebellar toxicity (REACT) associated with Minnelide and compared its radiological manifestations with other cerebellotoxic agents. METHODS: Both patients had histories of progressive metastatic cancer and participated in a phase 1 clinical trial with Minnelide...
March 16, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28298257/the-diagnostic-advantage-of-eob-mr-imaging-over-ct-in-the-detection-of-liver-metastasis-in-patients-with-potentially-resectable-pancreatic-cancer
#19
Takaaki Ito, Teiichi Sugiura, Yukiyasu Okamura, Yusuke Yamamoto, Ryo Ashida, Takeshi Aramaki, Masahiro Endo, Katsuhiko Uesaka
BACKGROUND: Liver metastases (LMs) are sometimes diagnosed intraoperatively, even when multidetector-row computed tomography (MDCT) reveals no LM in the staging of pancreatic cancer (PC). Gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid-enhanced magnetic resonance imaging (EOB-MR imaging) may have a role to play in the detection of LM. METHODS: The present study included a total of 201 patients who underwent an EOB-MR imaging examination before undergoing surgical resection for pancreatic cancer that was determined to be radiologically-resectable by MDCT...
March 8, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/28287935/heterotopic-pancreas-histopathologic-features-imaging-findings-and-complications
#20
Maryam Rezvani, Christine Menias, Kumaresan Sandrasegaran, Jeffrey D Olpin, Khaled M Elsayes, Akram M Shaaban
Heterotopic pancreas is a congenital anomaly in which pancreatic tissue is anatomically separate from the main gland. The most common locations of this displacement include the upper gastrointestinal tract-specifically, the stomach, duodenum, and proximal jejunum. Less common sites are the esophagus, ileum, Meckel diverticulum, biliary tree, mesentery, and spleen. Uncomplicated heterotopic pancreas is typically asymptomatic, with the lesion being discovered incidentally during an unrelated surgery, during an imaging examination, or at autopsy...
March 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
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