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Abdominal Radiology

Kazuto Kozaka, Osamu Matsui, Satoshi Kobayashi, Wataru Koda, Tetsuya Minami, Azusa Kitao, Dai Inoue, Norihide Yoneda, Kotaro Yoshida, Fumihito Toshima, Yasuni Nakanuma, Toshifumi Gabata
OBJECTIVES: To elucidate the dynamic CT features of pure type of cholangiolocellular carcinoma (pure CoCC) in comparison with those of cholangiocellular carcinoma (CCC) and to analyze their bases by angiography-assisted CT with histopathologic correlation. METHODS: Surgically confirmed 10 pure CoCCs, 10 CCCs and 7 mixed CoCC and CCCs from August 2001 to May 2012 were included in this study. Among them, dynamic CT features were compared. In 8 pure CoCCs, the correlative study between angiography-assisted CT and histopathological study was performed to clarify the basic mechanism of dynamic CT features...
October 17, 2016: Abdominal Radiology
Suk Keu Yeom, Chang Hee Lee, Sang Hoon Cha
No abstract text is available yet for this article.
October 15, 2016: Abdominal Radiology
Sung Bin Park
Using functional MR imaging techniques, we can approach the functional assessment of gynecologic malignancies. Among them, diffusion-weighted imaging (DWI) and dynamic contrast-enhanced MR imaging (DCE-MRI) are two important techniques. This article provides an overview of functional MR imaging techniques, focusing DWI and DCE-MRI on clinical application in gynecologic malignancies. Functional MR imaging techniques play an important role in detection, characterization, staging, treatment response, and outcome prediction, as well as providing conventional morphologic imaging...
October 14, 2016: Abdominal Radiology
Brindley David Cupido, Medica Sam, Sean David Winters, Bilal Ahmed, Michael Seidler, Guan Huang, Gavin Low
AIM: Renal cell carcinoma (RCC) is a heterogeneous disease which encompasses various subtypes that exhibit differing biologic behavior and imaging findings. Non-invasive subtype differentiation by imaging facilitates prognostication and treatment selection. The aim of the study was to evaluate the performance of a diagnostic imaging key based on tumor morphology, T2 signal intensity on MRI, and tumor vascularity for differentiating RCC into its subtypes. MATERIALS AND METHODS: Using a custom-designed diagnostic imaging key, three blinded fellowship-trained abdominal radiologists independently evaluated the cross-sectional imaging of 50 histologically proven RCCs and categorized these into subtypes in two sessions...
October 14, 2016: Abdominal Radiology
Amir A Borhani, Kenneth E Fasanella, Negaur Iranpour, Amer H Zureikat, Aatur D Singhi, Alessandro Furlan, Anil K Dasyam
PURPOSE: The purpose of the study was to investigate imaging features as well as pathologic and clinical findings of lymphoepithelial cyst (LEC) of pancreas. MATERIALS AND METHODS: Ten patients with surgically resected and pathologically proven LEC, found in a single institution database between 2000 and 2015, were evaluated in a retrospective fashion. Patients' demographics, clinical presentation, co-morbidities, imaging features, cytology and histopathology results, and serum/aspirate biomarkers levels were recorded...
October 13, 2016: Abdominal Radiology
Alec J Megibow
No abstract text is available yet for this article.
October 13, 2016: Abdominal Radiology
Melanie P Caserta, Candice Bolan, M Jennings Clingan
The purpose of this pictorial review is to describe the normal appearance of the endometrium and to provide radiologists with an overview of endometrial pathology utilizing case examples. The normal appearance of the endometrium varies by age, menstrual phase, and hormonal status with differing degrees of acceptable endometrial thickness. Endometrial pathology most often manifests as either focal or diffuse endometrial thickening, and patients frequently present with abnormal vaginal bleeding. Endovaginal ultrasound (US) is the first-line modality for imaging the endometrium...
October 12, 2016: Abdominal Radiology
Chang Kyu Sung, Min Hoan Moon, Hwancheol Son, Sohee Oh, Myoung Seok Lee, Hyunsik Woo
PURPOSE: To assess the effectiveness of reduced-radiation-dose computed tomography (CT) protocols in the tracing of the ureter in patients with suspected renal colic. METHODS: The study was approved by our institutional review board, and informed consent was obtained from the participants. From July 2012 to April 2014, 310 consecutive patients with suspected urolithiasis were recruited to undergo unenhanced CT at 280 (n = 62), 200 (n = 62), 140 (n = 62), 100 (n = 62), and 70 (n = 62) reference mA seconds (mAs) while keeping other imaging parameters constant...
October 11, 2016: Abdominal Radiology
Yaseen Oweis, Zachary Viets, Anup S Shetty
In the acute care setting, radiologists are frequently asked to assist in the evaluation of patients presenting with signs and symptoms of lower extremity peripheral vascular disease. Non-traumatic peripheral vascular emergencies are most commonly the result of thrombosis, either in a native vessel or within a bypass graft or stent. Arterial emboli, peripheral aneurysm with embolus or thrombosis, and direct arterial trauma are additional, less common causes. Traumatic peripheral vascular emergencies include vessel occlusion, transection, pseudoaneurysms, active extravasation, and arteriovenous fistulas...
October 11, 2016: Abdominal Radiology
Martina Scharitzer, Peter Pokieser, Michaela Wagner-Menghin, Ferdinand Otto, Olle Ekberg
PURPOSE: Clinical assessment of swallowing disorders (dysphagia) requires accurate and comprehensive medical history-taking to further tailor the diagnostic work-up, but functional health care questionnaires show a large variability and various limitations. The aim of this study was to assess the way in which international swallowing experts from various disciplines asses swallowing problems in order to improve the radiologist´s ability to take a thorough medical history in this specific patient group...
October 11, 2016: Abdominal Radiology
Michelle D Sakala, Raymond B Dyer, Rafel Tappouni
No abstract text is available yet for this article.
October 8, 2016: Abdominal Radiology
Tassia Soraya Araujo Paixão, Renata Vidal Leão, Natally de Souza Maciel Rocha Horvat, Publio Cesar Cavalcante Viana, Claudia Da Costa Leite, Rodrigo Lautert de Azambuja, Rodrigo Sanford Damasceno, Cinthia Denise Ortega, Marcos Roberto de Menezes, Giovanni Guido Cerri
PURPOSE: The present article provides an overview of the spectrum of abdominal presentations of fishbone (FB) ingestion and its complications. METHODS: In image data from 9 patients, FB perforations were found in different levels of the gastrointestinal tract (GIT), including duodenal, jejunal, and sigmoid perforations; in 4 asymptomatic patients, FBs were observed in the mesentery, falciform ligament, and intestinal bowel. RESULTS: The main imaging features of FB perforation were focal gastric or intestinal wall thickening, fat stranding, bowel obstruction, ascites, localized pneumoperitoneum, intra-abdominal abscess, liver abscess, and a linear hyperdense structure in the abdominal cavity in the GIT or within a parenchymal organ often surrounded by inflammatory changes...
October 8, 2016: Abdominal Radiology
Charis Bourgioti, Konstantinos Chatoupis, Chara Tzavara, Aristeidis Antoniou, Alexandros Rodolakis, Lia Angela Moulopoulos
AIM: To investigate the predictive ability of tumor size for deep myometrial invasion (≥50%) and metastatic lymphadenopathy, on maximal tumor diameter (MRI) of endometrial cancer. MATERIALS AND METHODS: Our study population consisted of 105 patients (mean age: 59.8 years) with histologically confirmed endometrial cancer. All patients underwent preoperative pelvic MRI. Tumor maximal diameter (size) was calculated on multiple sequences, and the largest value was recorded...
October 7, 2016: Abdominal Radiology
Larry Cai, Benjamin M Yeh, Antonio C Westphalen, John Roberts, Zhen J Wang
PURPOSE: To investigate whether the addition of gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced 3D T1-weighted MR cholangiography (T1w-MRC) to 3D T2-weighted MRC (T2w-MRC) improves the confidence and diagnostic accuracy of biliary anatomy in living liver donors. METHODS: Two abdominal radiologists retrospectively and independently reviewed pre-operative MR studies in 58 consecutive living liver donors. The second-order bile duct visualization on T1w- and T2w-MRC images was rated on a 4-point scale...
October 7, 2016: Abdominal Radiology
Kevin D Hiatt, Raymond B Dyer
No abstract text is available yet for this article.
October 7, 2016: Abdominal Radiology
Hira Lal, Priyank Yadav
No abstract text is available yet for this article.
October 7, 2016: Abdominal Radiology
Cynthia Assimta Peter, Dinesh Singh
No abstract text is available yet for this article.
October 6, 2016: Abdominal Radiology
Lambros Tselikas, Frederic Pigneur, Marion Roux, Laurence Baranes, Charlotte Costentin, Vincent Roche, Julien Calderaro, Edouard Herin, Alexis Laurent, Elie Zafrani, Daniel Azoulay, Ariane Mallat, Alain Rahmouni, Alain Luciani
PURPOSE: To compare the added values of hepatobiliary phase (HBP) MRI and contrast-enhanced ultrasound (CEUS) in addition to inconclusive extracellular gadolinium-based contrast-enhanced MRI (CE-MRI) to characterize benign hepatocellular tumors (BHT). METHODS: Eighty-three BHT-46 focal nodular hyperplasia (FNH) and 37 hepatocellular adenomas (HCA)-with inconclusive CE-MRI in 54 patients (43 women and 11 men, mean age 42 years old ± 14.8) were retrospectively analyzed...
October 4, 2016: Abdominal Radiology
Siavash Behbahani, Sameer Mittal, Michael N Patlas, Mariam Moshiri, Christine O Menias, Douglas S Katz
The purpose of this article is to familiarize radiologists and clinicians with a subset of common and uncommon incidental findings on abdominal and pelvic computed tomography examinations, including hepatic, splenic, renal, adrenal, pancreatic, aortic/iliac arterial, gynecological, and a few other miscellaneous findings, with an emphasis on "incidentalomas" discovered in the emergency setting. In addition, we will review the complex problem of diagnosing such entities, and provide current management recommendations...
September 30, 2016: Abdominal Radiology
Priyanka Jha, Viktoriya Paroder, Winnie Mar, Jeanne M Horowtiz, Liina Poder
Placental masses are uncommonly identified at the time of obstetric ultrasound evaluation. Understanding the pathologies presenting as placental masses is key for providing a differential diagnosis and guiding subsequent management, which may include additional imaging with magnetic resonance (MR) imaging. Potential benign entities include chorioangiomas and teratomas. Larger chorioangiomas can cause fetal cardiovascular issues from volume overload. Placental mesenchymal dysplasia has an association with fetal anomalies and detailed fetal evaluation should be performed when it is suspected...
September 30, 2016: Abdominal Radiology
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