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Pancreatic cancer imaging

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https://www.readbyqxmd.com/read/28110203/imaging-of-pancreatic-cancer-what-the-surgeon-wants-to-know
#1
REVIEW
Randy Yeh, Jonathan Steinman, Lyndon Luk, Michael D Kluger, Elizabeth M Hecht
Pancreatic cancer is the fourth leading cause of cancer-related death. Early detection is challenging because symptoms are relatively nonspecific. Imaging is vital in detecting and staging pancreatic tumors, and management depends on imaging findings. Radiologists should be aware of current surgical treatments for pancreatic neoplasms, as surgeons rely on interpretation of cross-sectional imaging for presurgical planning. Understanding postsurgical anatomy is critical to assess for complications and recurrence...
October 7, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/28107195/a-new-hdac-inhibitor-cinnamoylphenazine-shows-antitumor-activity-in-association-with-intensive-macropinocytosis
#2
Bing-Yan Zhu, Bo-Yang Shang, Yue Du, Yi Li, Liang Li, Xian-Dong Xu, Yong-Su Zhen
Previous studies have shown that intensive macropinocytosis occurs in cancer cells and neutral red (NR) is noted for its capability to enter into the cell massively through a process mimetic to macropinocytosis. In addition, trans-cinnamic acid (tCA) has been found to be an inhibitor of histone deacetylase (HDAC). In the present study, cinnamoylphenazine (CA-PZ) that consists of NR and tCA moieties was synthesized and evaluated. As shown, CA-PZ massively entered into colon carcinoma HT-29 cells and pancreatic carcinoma MIA PaCa-2 cells and this entry was blocked by 5-(N-ethyl-N-isopropyl) amiloride (EIPA, an inhibitor of macropinocytosis), indicating a macropinocytosis-mediated uptake...
January 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28105634/does-radiologic-response-correlate-to-pathologic-response-in-patients-undergoing-neoadjuvant-therapy-for-borderline-resectable-pancreatic-malignancy
#3
Brent T Xia, Baojin Fu, Jiang Wang, Young Kim, S Ameen Ahmad, Vikrom K Dhar, Nick C Levinsky, Dennis J Hanseman, David A Habib, Gregory C Wilson, Milton Smith, Olugbenga O Olowokure, Jordan Kharofa, Ali H Al Humaidi, Kyuran A Choe, Daniel E Abbott, Syed A Ahmad
BACKGROUND AND OBJECTIVES: In patients with borderline resectable pancreas cancers, clinicians frequently consider radiographic response as the primary driver of whether patients should be offered surgical intervention following neoadjuvant therapy (NT). We sought to determine any correlation between radiographic and pathologic response rates following NT. METHODS: Between 2005 and 2015, 38 patients at a tertiary care referral center underwent NT followed by pancreaticoduodenectomy for borderline resectable pancreas cancer...
January 20, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28099362/laparoscopic-pancreaticoduodenectomy-in-a-92-older-chinese-patient-for-cancer-of-head-of-the-pancreas-a-case-report
#4
Jiayu Zhou, Chang Xin, Tao Xia, Yiping Mou, Xiaowu Xu, Renchao Zhang, Yucheng Zhou, Weiwei Jin, Chao Lu
INTRODUCTION: Laparoscopic pancreaticoduodenectomy (LPD) is one of the most complex gastrointestinal procedures performed in laparoscopic abdominal surgery. However, the concern for elderly undergoing LPD remains. To the best of our knowledge, there are no reports describing LPD for A-92-older patient. This study aimed to share the experience of a tertiary pancreatic center and confirm the safety, feasibility of LPD for the elderly. METHOD: The patient had complained of 6-months history of abdominal discomfort and progressive jaundice...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28099258/patient-preferences-for-management-of-cystic-neoplasms-of-the-pancreas-a-cross-sectional-survey-study
#5
Dhruv Verma, Karl K Kwok, Bechien U Wu
OBJECTIVE: The aim of this study was to determine how patient anxiety, knowledge, and cancer worry influence preferences for management of pancreatic cysts. METHODS: We performed a prospective, cross-sectional study using a disease-specific survey instrument. We included patients older than 18 years who were diagnosed with a pancreatic cyst. A telephone survey instrument was developed to assess baseline anxiety using the Hospital Anxiety and Depression Scale (HADS), knowledge regarding pancreatic cysts, cancer worry, and patient preferences using a standard gamble...
January 18, 2017: Pancreas
https://www.readbyqxmd.com/read/28093683/simple-clinical-score-to-predict-24-week-survival-times-in-patients-with-inoperable-malignant-distal-biliary-obstruction-as-a-tool-for-selecting-palliative-metallic-or-plastic-stents
#6
Pimsiri Sripongpun, Siriboon Attasaranya, Naichaya Chamroonkul, Theerapong Sookpaisal, Uthai Khow-Ean, Aroon Siripun, Chanon Kongkamol, Teerha Piratvisuth, Bancha Ovartlarnporn
BACKGROUND AND AIM: Endoscopic biliary drainage (EBD) is the mainstay treatment for inoperable malignant distal biliary obstruction (MDBO). Some authorities suggest that metallic stents are more cost-effective than plastic stents in patients with expected survival of at least 6 months. However, studies attempting to define the predictive factors for such survival times are limited. This study aims to develop a scoring system for predicting a survival time of <24 weeks in these patients...
January 17, 2017: Journal of Gastrointestinal Cancer
https://www.readbyqxmd.com/read/28093626/contrast-enhanced-ct-in-determining-resectability-in-patients-with-pancreatic-carcinoma-a-meta-analysis-of-the-positive-predictive-values-of-ct
#7
Inne Somers, Shandra Bipat
OBJECTIVE: To obtain a summary positive predictive value (sPPV) of contrast-enhanced CT in determining resectability. METHODS: The MEDLINE and EMBASE databases from JAN2005 to DEC2015 were searched and checked for inclusion criteria. Data on study design, patient characteristics, imaging techniques, image evaluation, reference standard, time interval between CT and reference standard, and data on resectability/unresectablity were extracted by two reviewers. We used a fixed-effects or random-effects approach to obtain sPPV for resectability...
January 16, 2017: European Radiology
https://www.readbyqxmd.com/read/28091744/prediction-of-pancreatic-fistula-after-distal-pancreatectomy-based-on-cross-sectional-images
#8
Ye Rim Chang, Jae Seung Kang, Jin-Young Jang, Woo Hyun Jung, Mee Joo Kang, Kyung Bun Lee, Sun-Whe Kim
BACKGROUND: Postoperative pancreatic fistula (POPF) is one of the most common and clinically relevant complications after distal pancreatectomy (DP), occurring in 5-40% of patients. Determining risk factors for this complication may aid in its prevention. This study sought to predict the development of POPF after DP preoperatively and objectively based on radiologic findings. METHODS: This study included 60 patients who underwent DP using a stapler for pancreatic division between June 2011 and January 2013...
January 13, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28089481/recommendations-for-mri-based-contouring-of-gross-tumor-volume-and-organs-at-risk-for-radiation-therapy-of-pancreatic-cancer
#9
H D Heerkens, W A Hall, X A Li, P Knechtges, E Dalah, E S Paulson, C A T van den Berg, G J Meijer, E J Koay, C H Crane, K Aitken, M van Vulpen, B A Erickson
PURPOSE: Local recurrence is a common and morbid event in patients with unresectable pancreatic adenocarcinoma. A more conformal and targeted radiation dose to the macroscopic tumor in nonmetastatic pancreatic cancer is likely to reduce acute toxicity and improve local control. Optimal soft tissue contrast is required to facilitate delineation of a target and creation of a planning target volume with margin reduction and motion management. Magnetic resonance imaging (MRI) offers considerable advantages in optimizing soft tissue delineation and is an ideal modality for imaging and delineating a gross tumor volume (GTV) within the pancreas, particularly as it relates to conformal radiation planning...
October 17, 2016: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28079542/development-and-validation-of-a-multi-institutional-preoperative-nomogram-for-predicting-grade-of-dysplasia-in-intraductal-papillary-mucinous-neoplasms-ipmns-of-the-pancreas-a-report-from-the-pancreatic-surgery-consortium
#10
Marc A Attiyeh, Carlos Fernández-Del Castillo, Mohammad Al Efishat, Anne A Eaton, Mithat Gönen, Ruqayyah Batts, Ilaria Pergolini, Neda Rezaee, Keith D Lillemoe, Cristina R Ferrone, Mari Mino-Kenudson, Matthew J Weiss, John L Cameron, Ralph H Hruban, Michael I D'Angelica, Ronald P DeMatteo, T Peter Kingham, William R Jarnagin, Christopher L Wolfgang, Peter J Allen
OBJECTIVE: Previous nomogram models for patients undergoing resection of intraductal papillary mucinous neoplasms (IPMNs) have been relatively small single-institutional series. Our objective was to improve upon these studies by developing and independently validating a new model using a large multiinstitutional dataset. SUMMARY BACKGROUND DATA: IPMNs represent the most common radiographically identifiable precursor lesions of pancreatic cancer. They are a heterogenous group of neoplasms in which more accurate markers of high-grade dysplasia or early invasive carcinoma could help avoid unnecessary surgery in 1 case and support potentially curative intervention (resection) in another...
September 20, 2016: Annals of Surgery
https://www.readbyqxmd.com/read/28068959/pancreatic-neuroendocrine-tumor-with-metastasis-to-the-spleen-a-case-report
#11
Yasunaru Sakuma, Yoshikazu Yasuda, Naohiro Sata, Yoshinori Hosoya, Atsushi Shimizu, Hirofumi Fujii, Daisuke Matsubara, Noriyuki Fukushima, Atsushi Miki, Misato Maeno, Alan Kawarai Lefor
BACKGROUND: Long-term term survival in patients with pancreatic neuroendocrine tumors has been reported, even in patients with metastatic disease. Metastases to the spleen are extremely rare, but have been reported from a number of primary malignancies, such as breast cancer, lung cancer, melanoma and ovarian cancer. This is the first report of a splenic metastasis from a primary pancreatic neuroendocrine tumor. CASE PRESENTATION: The patient presented as a 53 years old white male with anemia and fatigue...
January 9, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28062708/establishment-of-the-in-vivo-efficacy-of-pretargeted-radioimmunotherapy-utilizing-inverse-electron-demand-diels-alder-click-chemistry
#12
Jacob L Houghton, Rosemery Membreno, Dalya Abdel-Atti, Kristen M Cunanan, Sean Carlin, Wolfgang W Scholz, Pat B Zanzonico, Jason S Lewis, Brian M Zeglis
The pretargeting system based on the inverse electron demand Diels-Alder reaction (IEDDA) between trans-cyclooctene (TCO) and tetrazine (Tz) combines the favorable pharmacokinetic properties of radiolabeled small molecules with the affinity and specificity of antibodies. This strategy has proven to be an efficient method for the molecularly targeted delivery of pharmaceuticals, including isotopes for radiological imaging. Despite encouraging results from in vivo PET imaging studies, this promising system has yet to be thoroughly evaluated for pretargeted radioimmunotherapy (PRIT)...
January 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28058076/non-alcoholic-fatty-pancreatic-disease-a-review-of-literature
#13
REVIEW
Hassan Tariq, Suresh Nayudu, Sai Akella, Mariela Glandt, Sridhar Chilimuri
There is an epidemic of obesity worldwide. The prevalence of obesity has doubled over the last three decades. Obesity, especially abdominal obesity is associated with insulin resistance that can lead to pancreatic steatosis and non-alcoholic fatty pancreatic disease (NAFPD). NAFPD describes a phenotype entity ranging from deposition of fat in the pancreas to pancreatic inflammation, and resultant fibrosis, which is similar to that of non-alcoholic fatty liver disease (NAFLD). NAFPD may represent a meaningful manifestation of metabolic syndrome...
December 2016: Gastroenterology Research
https://www.readbyqxmd.com/read/28049283/application-of-photodynamic-therapy-in-gastrointestinal-disorders-an-outdated-or-re-emerging-technique
#14
REVIEW
Han Hee Lee, Myung-Gyu Choi, Tayyaba Hasan
Photodynamic therapy (PDT) is a promising therapeutic modality that involves the administration of a photosensitizer followed by local illumination with a specific wavelength of light in the presence of oxygen. PDT is minimally invasive, has high selectivity for cancer, and has good patient compliance due to the simplicity of the procedure; therefore, PDT is widely used as a palliative and salvage treatment in patients with various gastrointestinal malignancies. When used as a salvage treatment for locoregional failures after definitive chemoradiotherapy for esophageal cancer, favorable results have been reported...
January 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28047865/we-de-bra-10-development-of-a-novel-scanning-beam-low-energy-intraoperative-radiation-therapy-sbiort-system-for-pancreatic-cancer
#15
B Wears, I Mohiuddin, R Flynn, T Waldron, Y Kim, B Allen, J Xia
PURPOSE: Developing a compact collimator system and validating a 3D surface imaging module for a scanning beam low-energy x-ray radiation therapy (SBIORT) system that enables delivery of non-uniform radiation dose to targets with irregular shapes intraoperatively. METHODS: SBIORT consists of a low energy x-ray source, a custom compact collimator module, a robotic arm, and a 3D surface imaging module. The 3D surface imaging system (structure sensor) is utilized for treatment planning and motion monitoring of the surgical cavity...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047739/su-d-207b-07-development-of-a-ct-radiomics-based-early-response-prediction-model-during-delivery-of-chemoradiation-therapy-for-pancreatic-cancer
#16
S Klawikowski, J Christian, D Schott, M Zhang, X Li
PURPOSE: Pilot study developing a CT-texture based model for early assessment of treatment response during the delivery of chemoradiation therapy (CRT) for pancreatic cancer. METHODS: Daily CT data acquired for 24 pancreatic head cancer patients using CT-on-rails, during the routine CT-guided CRT delivery with a radiation dose of 50.4 Gy in 28 fractions, were analyzed. The pancreas head was contoured on each daily CT. Texture analysis was performed within the pancreas head contour using a research tool (IBEX)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047379/mo-de-207a-02-a-feature-preserving-image-reconstruction-method-for-improved-pancreaticlesion-classification-in-diagnostic-ct-imaging
#17
J Xu, B Tsui, F Noo
PURPOSE: To develop a feature-preserving model based image reconstruction (MBIR) method that improves performance in pancreatic lesion classification at equal or reduced radiation dose. METHODS: A set of pancreatic lesion models was created with both benign and premalignant lesion types. These two classes of lesions are distinguished by their fine internal structures; their delineation is therefore crucial to the task of pancreatic lesion classification. To reduce image noise while preserving the features of the lesions, we developed a MBIR method with curvature-based regularization...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047289/tu-ab-bra-11-indications-for-online-adaptive-radiotherapy-based-on-dosimetric-consequences-of-interfractional-pancreas-to-duodenum-motion-in-mri-guided-pancreatic-radiotherapy
#18
K Mittauer, S Rosenberg, M Geurts, M Bassetti, I Chen, L Henke, J Olsen, R Kashani, A Wojcieszynski, P Harari, Z Labby, P Hill, B Paliwal, P Parikh, J Bayouth
PURPOSE: Dose limiting structures, such as the duodenum, render the treatment of pancreatic cancer challenging. In this multi-institutional study, we assess dosimetric differences caused by interfraction pancreas-to-duodenum motion using MR-IGRT to determine the potential impact of adaptive replanning. METHODS: Ten patients from two institutions undergoing MRI-guided radiotherapy with conventional fractionation (n=5) or SBRT (n=5) for pancreatic cancer were included...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047083/su-c-bra-01-interactive-auto-segmentation-for-bowel-in-online-adaptive-mri-guided-radiation-therapy-by-using-a-multi-region-labeling-algorithm
#19
Y Lu, I Chen, R Kashani, H Wan, N Maughan, D Muccigrosso, P Parikh
PURPOSE: In MRI-guided online adaptive radiation therapy, re-contouring of bowel is time-consuming and can impact the overall time of patients on table. The study aims to auto-segment bowel on volumetric MR images by using an interactive multi-region labeling algorithm. METHODS: 5 Patients with locally advanced pancreatic cancer underwent fractionated radiotherapy (18-25 fractions each, total 118 fractions) on an MRI-guided radiation therapy system with a 0.35 Tesla magnet and three Co-60 sources...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046885/su-f-j-137-intrafractional-change-of-the-relationship-between-internal-fiducials-and-external-breathing-signal-in-pancreatic-cancer-stereotactic-body-radiation-therapy
#20
N Pettersson, J Murphy, D Simpson, L Cervino
PURPOSE: The use of respiratory gating for management of breathing motion during stereotactic body radiation therapy (SBRT) relies on a consistent relationship between the breathing signal and the actual position of the internal target. This relationship was investigated in patients treated for pancreatic cancer. METHODS: Four patients with pancreatic cancer undergoing SBRT that had implanted fiducials in the tumor were included in this study. Treatment plans were generated based on the exhale phases (30-70%) from the pre-treatment 4DCT...
June 2016: Medical Physics
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