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Pancreas imaging

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https://www.readbyqxmd.com/read/27933175/hyperinsulinemic-hypoglycemia-associated-with-insulin-antibodies-caused-by-exogenous-insulin-analog
#1
Chih-Ting Su, Yi-Chun Lin
: Insulin antibodies (IA) associated with exogenous insulin administration seldom caused hypoglycemia and had different characteristics from insulin autoantibodies (IAA) found in insulin autoimmune syndrome (IAS), which was first described by Dr Hirata in 1970. The characteristic of IAS is the presence of insulin-binding autoantibodies and related fasting or late postprandial hypoglycemia. Here, we report a patient with type 1 diabetes mellitus under insulin glargine and insulin aspart treatment who developed recurrent spontaneous post-absorptive hyperinsulinemic hypoglycemia with the cause probably being insulin antibodies induced by exogenous injected insulin...
2016: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/27932184/intrapancreatic-splenule-in-a-pancreas-allograft-case-report
#2
K Yadav, O K Serrano, R Kandaswamy
A 16-year-old white man was involved in a motor vehicle collision and suffered head, chest, and abdominal trauma. Despite initial resuscitative efforts, he progressed to brain death and was designated to be an organ donor by his family. He had no earlier medical or surgical history and no high-risk behaviors. Blood work revealed normal creatinine, liver function tests, lipase, and amylase. Viral serologies were negative except for cytomegalovirus IgG and Epstein-Barr virus nucleic acid. Imaging revealed a right kidney contusion, a manubrial fracture, and fractures of right first rib and bilateral scapulae...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27931107/a-diffusely-enlarged-pancreas-the-un-usual-suspect
#3
Pedro Magalhães-Costa, Maria José Brito, Pedro Pinto-Marques
An 81-years-old female presented with obstructive jaundice and a non-specific clinical picture of nausea and appetite loss. Labs demonstrated a conjugated hyperbilirrubinemia (7.7 mg/dL), increased aspartate aminotransferase and alanine aminotransferase (10xULN and 8xULN, respectively), increased lactate dehydrogenase (10xULN) and serum lipase (3xULN). CA 19.9 was 342 U/mL (Ref value < 37 U/mL). There was no evidence of peripheral lymphadenopathy or hepatosplenomegaly. Imaging (Figure 1A and 1B) revealed a marked homogeneous enlargement of the pancreas (without any well-defined mass), dilation of the extra and intra-hepatic bile ducts and ascites...
December 2016: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/27929662/insulinoma-detection-with-mdct-is-there-a-role-for-whole-pancreas-perfusion
#4
Liang Zhu, Huadan Xue, Hao Sun, Xuan Wang, Wenming Wu, Zhengyu Jin, Yupei Zhao
OBJECTIVE: The purpose of this study is to investigate the role of whole-pancreas perfusion in detecting insulinomas with the use of MDCT. MATERIALS AND METHODS: From January 2011 to December 2011, a total of 70 consecutive patients (33 men and 37 women; mean age, 46 years; range, 17-73 years) who underwent biphasic contrast-enhanced CT and whole-pancreas CT perfusion for suspected insulinomas were identified retrospectively. Patients were monitored for at least 3 years...
December 8, 2016: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/27928774/a-3d-printed-anatomical-pancreas-and-kidney-phantom-for-optimizing-spect-ct-reconstruction-settings-in-beta-cell-imaging-using-111-in-exendin
#5
Wietske Woliner-van der Weg, Laura N Deden, Antoi P W Meeuwis, Maaike Koenrades, Laura H C Peeters, Henny Kuipers, Geert Jan Laanstra, Martin Gotthardt, Cornelis H Slump, Eric P Visser
BACKGROUND: Quantitative single photon emission computed tomography (SPECT) is challenging, especially for pancreatic beta cell imaging with (111)In-exendin due to high uptake in the kidneys versus much lower uptake in the nearby pancreas. Therefore, we designed a three-dimensionally (3D) printed phantom representing the pancreas and kidneys to mimic the human situation in beta cell imaging. The phantom was used to assess the effect of different reconstruction settings on the quantification of the pancreas uptake for two different, commercially available software packages...
December 2016: EJNMMI Physics
https://www.readbyqxmd.com/read/27926784/preoperative-characteristics-and-cytological-features-of-136-histologically-confirmed-pancreatic-mucinous-cystic-neoplasms
#6
Aristana Scourtas, Jonathan C Dudley, William R Brugge, Abdurrahman Kadayifci, Mari Mino-Kenudson, Martha B Pitman
BACKGROUND: Mucinous cystic neoplasms (MCNs) of the pancreas present a management conundrum. The majority are benign but all are resected due to their malignant potential. Recent studies have recommended nonsurgical management. In the current study, the authors analyzed the preoperative imaging, cytology, and cyst fluid characteristics of 136 histologically confirmed MCNs to assess predictors of a high-risk (HR) cyst for surgical triage. METHODS: MCNs resected at the Massachusetts General Hospital between 1990 and 2014 formed the study cohort...
December 7, 2016: Cancer
https://www.readbyqxmd.com/read/27920845/the-great-imitator-igg4-periaortitis-masquerading-as-an-acute-aortic-syndrome-on-computed-tomographic-angiography
#7
Drew W Moore, Neil J Hansen, Dominick J DiMaio, William L Harrison
We present the case of a 52-year-old woman who presented to the emergency department with chest and neck pain. Initial cervical spine magnetic resonance imaging shows an abnormal flow void in the left vertebral artery, which prompted a computed tomographic angiogram. This demonstrated a hyperdense thickened ascending aortic wall, which extended into the great vessel origins. Clinically and radiographically interpreted as an acute aortic syndrome and/or intramural hematoma, the patient underwent ascending aortic repair with graft...
December 2016: Radiology case reports
https://www.readbyqxmd.com/read/27920477/evolution-of-incidental-branch-duct-intraductal-papillary-mucinous-neoplasms-of-the-pancreas-a-study-with-magnetic-resonance-imaging-cholangiopancreatography
#8
Rossano Girometti, Riccardo Pravisani, Sergio Giuseppe Intini, Miriam Isola, Lorenzo Cereser, Andrea Risaliti, Chiara Zuiani
AIM: To investigate the type and timing of evolution of incidentally found branch-duct intraductal papillary mucinous neoplasms (bd-IPMN) of the pancreas addressed to magnetic resonance imaging cholangiopancreatography (MRCP) follow-up. METHODS: We retrospectively evaluated 72 patients who underwent, over the period 2006-2016, a total of 318 MRCPs (mean 4.4) to follow-up incidental, presumed bd-IPMN without signs of malignancy, found or confirmed at a baseline MRCP examination...
November 21, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27913913/improved-image-quality-in-abdominal-ct-in-patients-who-underwent-treatment-for-hepatocellular-carcinoma-with-small-metal-implants-using-a-raw-data-based-metal-artifact-reduction-algorithm
#9
Keitaro Sofue, Takeshi Yoshikawa, Yoshiharu Ohno, Noriyuki Negi, Hiroyasu Inokawa, Naoki Sugihara, Kazuro Sugimura
OBJECTIVES: To determine the value of a raw data-based metal artifact reduction (SEMAR) algorithm for image quality improvement in abdominal CT for patients with small metal implants. METHODS: Fifty-eight patients with small metal implants (3-15 mm in size) who underwent treatment for hepatocellular carcinoma were imaged with CT. CT data were reconstructed by filtered back projection with and without SEMAR algorithm in axial and coronal planes. To evaluate metal artefact reduction, mean CT number (HU and SD) and artefact index (AI) values within the liver were calculated...
December 2, 2016: European Radiology
https://www.readbyqxmd.com/read/27909774/evaluation-of-upper-abdominal-organs-with-dwi-in-patients-with-familial-mediterranean-fever
#10
Eda Albayrak, Safak Sahin
PURPOSE: To investigate the diagnostic efficiency of diffusion-weighted magnetic resonance imaging (DWI) for the evaluation of functional changes that can occur in upper abdominal organs in patients with familial Mediterranean fever (FMF). METHODS: The study included 50 controls, 45 patients with FMF, and 14 patients with FMF who had accompanying proteinuria. Measurement of apparent diffusion coefficient (ADC) was performed using DWI sections obtained from liver, spleen, kidney, and pancreas parenchyma with 1...
December 2, 2016: Abdominal Radiology
https://www.readbyqxmd.com/read/27909574/characterization-of-5-2-18-f-fluoroethoxy-l-tryptophan-for-pet-imaging-of-the-pancreas
#11
Ahmed Abbas, Christine Beamish, Rebecca McGirr, John Demarco, Neil Cockburn, Dawid Krokowski, Ting-Yim Lee, Michael Kovacs, Maria Hatzoglou, Savita Dhanvantari
Purpose: In diabetes, pancreatic beta cell mass declines significantly prior to onset of fasting hyperglycemia. This decline may be due to endoplasmic reticulum (ER) stress, and the system L amino acid transporter LAT1 may be a biomarker of this process. In this study, we used 5-(2- (18)F-fluoroethoxy)-L-tryptophan ( (18)F-L-FEHTP) to target LAT1 as a potential biomarker of beta cell function in diabetes. Procedures: Uptake of (18)F-L-FEHTP was determined in wild-type C57BL/6 mice by ex vivo biodistribution...
2016: F1000Research
https://www.readbyqxmd.com/read/27904870/preclinical-study-of-68-ga-dotatoc-biodistribution-assessment-in-syrian-rats-and-evaluation-of-absorbed-dose-in-human-organs
#12
Mojdeh Naderi, Samaneh Zolghadri, Hassan Yousefnia, Ali Ramazani, Amir Reza Jalilian
OBJECTIVES: Gallium-68 DOTA-DPhe(1)-Tyr(3)-Octreotide ((68)Ga-DOTATOC) has been applied by several European centers for the treatment of a variety of human malignancies. Nevertheless, definitive dosimetric data are yet unavailable. According to the Society of Nuclear Medicine and Molecular Imaging, researchers are investigating the safety and efficacy of this radiotracer to meet Food and Drug Administration requirements. The aim of this study was to introduce the optimized procedure for (68)Ga-DOTATOC preparation, using a novel germanium-68 ((68)Ge)/(68)Ga generator in Iran and evaluate the absorbed doses in numerous organs with high accuracy...
2016: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27904444/anatomic-variations-of-the-pancreatic-duct-and-their-relevance-with-the-cambridge-classification-system-mrcp-findings-of-1158-consecutive-patients
#13
Zehra Hilal Adibelli, Mustafa Adatepe, Cetin Imamoglu, Ozgur Sipahi Esen, Nazif Erkan, Mehmet Yildirim
BACKGROUND: The study was conducted to evaluate the frequencies of the anatomic variations and the gender distributions of these variations of the pancreatic duct and their relevance with the Cambridge classification system as morphological sign of chronic pancreatitis using magnetic resonance cholangiopancreatography (MRCP). PATIENTS AND METHODS: We retrospectively reviewed 1312 consecutive patients who referred to our department for MRCP between January 2013 and August 2015...
December 1, 2016: Radiology and Oncology
https://www.readbyqxmd.com/read/27902356/luciferase-tagged-wild-type-and-tropism-deficient-mouse-cytomegaloviruses-reveal-early-dynamics-of-host-colonization-following-peripheral-challenge
#14
Helen Farrell, Martha Oliveira, Kate Macdonald, Joseph Yunis, Michael Mach, Kimberley Bruce, Philip Stevenson, Rhonda Cardin, Nicholas Davis-Poynter
Cytomegaloviruses (CMVs) establish persistent, systemic infections and cause disease by maternal-fetal transfer, suggesting that their dissemination is a key target for anti-viral intervention. Late clinical presentation has meant that human CMV dissemination is not well understood. Murine CMV provides a tractable model. Whole mouse imaging of virus-expressed luciferase has proved a useful way to track systemic infections. MCMV, in which the abundant lytic gene M78 was luciferase tagged via a self-cleaving peptide (M78-LUC), allowed serial, unbiased imaging of systemic and peripheral infection without significant virus attenuation...
October 26, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27900090/traumatic-rupture-of-solid-pseudopapillary-tumors-of-the-pancreas-in-children-a-case-report
#15
Semih Lütfi Mirapoğlu, Ibrahim Aydogdu, Zuhal Gucin, Temel Fatih Yilmaz, Tarik Umutoglu, Huseyin Kilincaslan
Solid pseudopapillary tumor (SPT) of the pancreas is a pathological entity rarely encountered in children. Despite its malignant characteristics, SPT has a favorable clinical prognosis. This tumor is more frequently observed in females and is commonly localized in the tail and body of the pancreas. This is the case report of a 9-year-old female patient who presented with severe abdominal pain of sudden onset and vomiting following blunt abdominal trauma. Upon physical examination, abdominal distension, tenderness and abdominal guarding were detected...
November 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/27898201/diffusion-weighted-imaging-of-the-abdomen-impact-of-b-values-on-texture-analysis-features
#16
Anton S Becker, Matthias W Wagner, Moritz C Wurnig, Andreas Boss
The purpose of this work was to systematically assess the impact of the b-value on texture analysis in MR diffusion-weighted imaging (DWI) of the abdomen. In eight healthy male volunteers, echo-planar DWI sequences at 16 b-values ranging between 0 and 1000 s/mm(2) were acquired at 3 T. Three different apparent diffusion coefficient (ADC) maps were computed (0, 750/100, 390, 750 s/mm(2) /all b-values). Texture analysis of rectangular regions of interest in the liver, kidney, spleen, pancreas, paraspinal muscle and subcutaneous fat was performed on DW images and the ADC maps, applying 19 features computed from the histogram, grey-level co-occurrence matrix (GLCM) and grey-level run-length matrix (GLRLM)...
November 29, 2016: NMR in Biomedicine
https://www.readbyqxmd.com/read/27897432/low-skeletal-muscle-radiation-attenuation-and-visceral-adiposity-are-associated-with-overall-survival-and-surgical-site-infections-in-patients-with-pancreatic-cancer
#17
David P J van Dijk, Maikel J A M Bakens, Mariëlle M E Coolsen, Sander S Rensen, Ronald M van Dam, Martijn J L Bours, Matty P Weijenberg, Cornelis H C Dejong, Steven W M Olde Damink
BACKGROUND: Cancer cachexia and skeletal muscle wasting are related to poor survival. In this study, quantitative body composition measurements using computed tomography (CT) were investigated in relation to survival, post-operative complications, and surgical site infections in surgical patients with cancer of the head of the pancreas. METHODS: A prospective cohort of 199 patients with cancer of the head of the pancreas was analysed by CT imaging at the L3 level to determine (i) muscle radiation attenuation (average Hounsfield units of total L3 skeletal muscle); (ii) visceral adipose tissue area; (iii) subcutaneous adipose tissue area; (iv) intermuscular adipose tissue area; and (v) skeletal muscle area...
October 26, 2016: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/27895996/label-free-fast-3d-coherent-imaging-reveals-pancreatic-islet-micro-vascularization-and-dynamic-blood-flow
#18
Corinne Berclaz, Daniel Szlag, David Nguyen, Jérôme Extermann, Arno Bouwens, Paul J Marchand, Julia Nilsson, Anja Schmidt-Christensen, Dan Holmberg, Anne Grapin-Botton, Theo Lasser
In diabetes, pancreatic β-cells play a key role. These cells are clustered within structures called islets of Langerhans inside the pancreas and produce insulin, which is directly secreted into the blood stream. The dense vascularization of islets of Langerhans is critical for maintaining a proper regulation of blood glucose homeostasis and is known to be affected from the early stage of diabetes. The deep localization of these islets inside the pancreas in the abdominal cavity renders their in vivo visualization a challenging task...
November 1, 2016: Biomedical Optics Express
https://www.readbyqxmd.com/read/27889754/serous-cystadenoma-of-the-pancreas-potentials-and-pitfalls-of-a-preoperative-cytopathologic-diagnosis
#19
Mohammed T Lilo, Christopher J VandenBussche, Derek B Allison, Anne Marie Lennon, Bouchra K Younes, Ralph H Hruban, Christopher L Wolfgang, Syed Z Ali
OBJECTIVES: Pancreatic serous cystadenomas (SCAs) are benign tumors. Technological advances in imaging have led to increased recognition of asymptomatic pancreatic cysts, consequently increasing the demand for cytomorphologic evaluations of cyst fluid. STUDY DESIGN: A retrospective search through the pathology archives over an 11-year period was performed to identify SCAs from pancreatectomy specimens with a presurgical pancreatic EUS-guided fine-needle aspiration (FNA)...
November 26, 2016: Acta Cytologica
https://www.readbyqxmd.com/read/27888599/a-rare-anomaly-of-duodenum-a-case-report
#20
Rekha Lalwani, Sunita Athavale, Sheetal Kotgirwar
 Anatomical variations of duodenum such as atresia, stenosis, and variations in shape have been described by various authors, but the existence of a gross anomaly in shape and position of midgut segment of the duodenum is rare. Few reported cases of duodenal anomalies date back to early twentieth century. In the wake of advancement of imaging techniques and minimal access surgeries, authors report a case of a rare duodenal anomaly. The reported case assumes significance because of thepossibility of misinterpretation of radiological images which has been discussed while citing such references...
October 2016: Acta Medica Iranica
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