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Clinical Imaging

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https://www.readbyqxmd.com/read/29035756/lymph-node-wire-localization-post-chemotherapy-towards-improving-the-false-negative-sentinel-lymph-node-biopsy-rate-in-breast-cancer-patients
#1
Brittany Z Dashevsky, Ashley Altman, Hiroyuki Abe, Nora Jaskowiak, Jean Bao, David V Schacht, Deepa Sheth, Kirti Kulkarni
PURPOSE: To evaluate whether the disease status of the pre-neoadjuvant chemotherapy (NAC) core biopsied lymph node (preNACBxLN) in patients with node positive breast cancer corresponds to nodal status of all surgically retrieved lymph nodes (LNs) post-NAC and whether wire localization of this LN is feasible. MATERIALS AND METHODS: HIPPA compliant IRB approved retrospective study including breast cancer patients (a.) with preNACBxLN confirmed metastases, (b.) who received NAC, and (c...
October 7, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29028514/solitary-fibrous-tumor-in-the-abdomen-and-pelvis-a-case-series-with-radiological-findings-and-treatment-recommendations
#2
Adrian Fernandez, Miles Conrad, Ryan M Gill, Won-Tak Choi, Vishal Kumar, Spencer Behr
This study presents the radiological findings of seven cases of solitary fibrous tumor (SFT) in the abdomen and pelvis. A retrospective search of the pathology database at our institution was performed to identify cases of SFT in the abdomen and pelvis. After identifying seven cases, cross-sectional imaging was reviewed and characterized. We conclude that SFTs in the abdomen and pelvis should be considered with well-defined, circular, hypervascular masses. Pelvic SFTs should be considered with homogenous, avidly enhancing masses...
October 7, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29028509/delayed-onset-mri-findings-in-acute-chorea-related-to-anoxic-brain-injury
#3
Mehdi Ghasemi, Firas Kaddouh, Anindita Deb, Margaret A Owegi
Anoxic brain injury can manifest with various abnormal movements. We describe acute chorea in a young patient with anoxic brain injury due to chlordiazepoxide toxicity who had delayed radiographic lesions in bilateral globus pallidus. Although brain MRI 8days after the anoxic event was unremarkable, repeat brain MRI 15days after the event showed T2 hyperintensities and enhancement within the bilateral globus pallidi. It is possible that MRI brain findings of bilateral basal ganglia lesions may appear later than onset of chorea in anoxic brain injury...
October 5, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29031209/relative-value-of-three-whole-body-mr-approaches-for-pet-mr-including-gadofosveset-enhanced-mr-in-comparison-to-pet-ct
#4
Piotr Obara, Andreas Loening, Valentina Taviani, Andrei Iagaru, Brian A Hargreaves, Shreyas Vasanawala
PURPOSE: Evaluate MR protocol for PET-MR including coronal DWI (cDWI), fat-suppressed T2 (T2w), and gadofosveset-enhanced T1 (CE). MATERIALS AND METHODS: 18 patients underwent same-day PET-CT and PET-MR. Image quality and performance of each sequence, and combination of all three sequences, was evaluated with respect to PET-CT. RESULTS: Lesion conspicuity was best on cDWI, while delineation was best on CE. Considering all three sequences combined, both readers showed good sensitivity and specificity (>80%)...
September 29, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29028510/comparison-of-virtual-monochromatic-series-iodine-overlay-maps-and-single-energy-ct-equivalent-images-in-head-and-neck-cancer-conspicuity
#5
Michael Kraft, Mohannad Ibrahim, Matthew Spector, Reza Forghani, Ashok Srinivasan
OBJECTIVE: To compare lesion conspicuity amongst DECT monochromatic series (40, 45, 50keV), and single-energy CT (SECT) equivalent images in head and neck squamous cell carcinomas (HNSCC). METHODS: Two readers compared DECT images to 70keV SECT equivalent series in 39 patients with HNSCC on lesion margin, enhancement, and overall conspicuity. RESULTS: The 45keV and 50keV images were significantly better (p-values ≤0.001) than the SECT equivalent in lesion enhancement, margins, and overall conspicuity for both readers...
September 29, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29028515/post-biopsy-mri-changes-in-the-size-and-enhancement-of-intramuscular-myxomas-a-report-of-two-cases
#6
Wilbur Wang, Edward Smitaman, Wesley Rubenstein, Tudor Hughes, Brady K Huang
Intramuscular myxomas are benign soft-tissue tumors, characterized by bland spindle-shaped cells and fibroblasts within an abundant mucoid matrix on histologic examination. Classically, these are slowly enlarging masses which may occasionally cause pain, paresthesia, and muscle weakness secondary to mass effect. We present an interesting phenomenon of two histologically confirmed cases of intramuscular myxomas that exhibited size and enhancement changes on follow-up imaging after image-guided biopsy. To our knowledge, this is the first report to describe size and enhancement changes of intramuscular myxomas after biopsy...
September 28, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29028513/occurrence-and-significance-of-morphologic-changes-in-patients-with-metastatic-triple-negative-breast-cancer-treated-with-cabozantinib
#7
Atul B Shinagare, Bhanusupriya Somarouthu, Hao Guo, Sara M Tolaney, Nikhil H Ramaiya
OBJECTIVE: To compare performance of RECIST1.1 and Choi criteria in assessment of patients with metastatic triple-negative breast cancer treated with cabozantinib. METHODS: Thirty patients with metastatic triple-negative breast cancer enrolled in phase 2 clinical trial received cabozantinib. Clinical benefit rates assessed by prospectively determined RECIST1.1 and retrospectively assessed Choi criteria were compared. RESULTS: Decreased tumor density (≥15%) at first follow-up was seen in 22/30(73%) patients...
September 28, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28963916/case-based-simulation-in-mri-for-suspected-appendicitis-in-children
#8
Hansel J Otero, Anilawan Smitthimedhin, Crystal C Wang, Mark D Heitzmann
PURPOSE: To establish the effect on diagnostic confidence of a simulation setting, in which radiologists re-interpret anonymized pediatric MRI cases. MATERIALS: In this IRB-approved study, participants completed surveys rating confidence before and after interpreting 10 MRI cases for suspected appendicitis in children. RESULTS: 18 radiologists (4 faculty, 5 fellows, and 9 residents) correctly identified an average of 7.44 cases (range 5-9)...
September 22, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29028512/the-ectopic-accessory-parotid-system-a-new-patient-studied-through-magnetic-resonance-imaging
#9
Mainak Dutta, Indranil Chatterjee, Soham Roy
The ectopic accessory parotid system (EAPS) connotes an extra parotid tissue with its ductal outlet that is morphologically distinct from the main parotid gland and its drainage system. Clinically presenting as a saliva-draining cheek fistula near the oral commissure, this rare congenital anomaly is almost always associated with ipsilateral preauricular appendages and occasional mandibular hypoplasia, and is considered a variant of the oculo-auriculo-vertebral spectrum. This report discusses the embryology, clinical details, and management aspects in a new patient, highlighting the role of magnetic resonance imaging in, for the first time, tracking the ectopic salivary system, and establishing its independent existence...
September 21, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28950177/malignant-transformation-and-leptomeningeal-spread-of-recurrent-ganglioglioma-case-report-and-review-of-literature
#10
Grant Riesberg, Girish Bathla, Sarika Gupta, Pankaj Watal, Toshio Moritani
Gangliogliomas are rare, typically benign low grade tumors which usually occur in the supratentorial compartment, more commonly in the pediatric age group. Malignant transformation of a low grade ganglioglioma in the absence of prior radiation therapy is exceptionally rare with only 17 such cases previously reported. The author present an additional case of malignant transformation of recurrent ganglioglioma. Unlike the prior cases however, the recurrent tumor in our case showed prominent intratumoral hemorrhage and widespread leptomeningeal spread...
September 20, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29028511/a-pictorial-review-of-diagnostic-pitfalls-of-developmental-anomalies-and-variants-in-pancreatic-imaging
#11
REVIEW
Jong Eun Lee, Sang Soo Shin, Shin Jung Kim, Suk Hee Heo, Hyo Soon Lim, Jin Woong Kim, Yong Yeon Jeong
Developmental anomalies and anatomic variants of the pancreas vary widely, and most of them are encountered incidentally during radiologic evaluation. However, some of these anomalies and variants are potentially pathologic and may cause various clinical presentations in childhood or adulthood. The early identification of these entities in various imaging modalities including ultrasound, computed tomography (CT), and magnetic resonance (MR) imaging would be valuable in making correct diagnoses and, in turn, preventing unnecessary additional procedures...
September 19, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28947367/marie-curie-stirring-the-pot
#12
EDITORIAL
Lucy B Spalluto
No abstract text is available yet for this article.
September 18, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29024836/performance-of-a-simple-robust-empiric-timing-protocol-for-ct-pulmonary-angiography
#13
Kevin A Hsu, Jeffrey M Levsky, Linda B Haramati, Arash Gohari
OBJECTIVE: We instituted a new, simple CT pulmonary angiography (CTPA) contrast material timing protocol using a standard empiric delay to replace our previous timing bolus method. This study tests the hypothesis that the empiric protocol more consistently produces diagnostic quality images of both the pulmonary arteries and the aorta with lower radiation exposure. MATERIALS AND METHODS: We performed a retrospective review of consecutive CTPAs for 2months both before and after the protocol change...
September 14, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28946103/from-the-bottom-of-the-heart-measuring-liver-iron-concentration-on-cardiac-mri
#14
Stephanie Tan, Qi Peng, Mark C Liszewski, Benjamin H Taragin
Patients with hemochromatosis require regular surveillance of liver and cardiac iron concentration with liver and cardiac MRI. However, cardiac MRI includes a part of the liver in the field of view. The purpose of this retrospective and prospective study is to determine if liver T2* measured on cardiac MRI may be used as a surrogate for T2* obtained on standard liver MRI. Liver iron concentrations were measured on cardiac and liver MRI in 21 patients. Although statistically significant, the difference may be clinically insignificant as the same patients merited chelation therapy when relying on either the cardiac or liver MRI...
September 13, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28946102/hyperirritable-stomach-as-a-cause-of-obstructive-symptoms-after-sleeve-gastrectomy-clinical-and-radiographic-findings
#15
Amelia M Wnorowski, Marc S Levine, Stephen E Rubesin, Noel N Williams, Kristoffel R Dumon
PURPOSE: To characterize clinical and radiographic features of a hyperirritable stomach after sleeve gastrectomy. MATERIALS/METHODS: Radiology reports revealed that 10/76 patients (13%) with obstructive symptoms after sleeve gastrectomy had a hyperirritable stomach. RESULTS: All 10 patients presented with nausea, vomiting, and/or regurgitation. All 10 had emesis on barium studies in the absence of gastric outlet obstruction, gastroparesis, or small bowel obstruction/ileus...
September 10, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28946013/manifestations-of-sickle-cell-disease-on-thoracic-imaging
#16
REVIEW
Mindy X Wang, Eric W Pepin, Nupur Verma, Tan-Lucien Mohammed
Sickle cell disease is an inherited hemolytic disease with systemic complications. These complications significantly impact the patients' quality of life. There are characteristic radiological findings that can aid in the diagnosis and management of common sequelae of sickle cell disease. In this review, we will discuss the thoracic imaging findings of common complications of sickle cell disease in an organ-based approach and provide imaging examples of them.
September 8, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28917138/pulmonary-venous-anomalies-causing-misdiagnosis-of-pulmonary-arteriovenous-malformations
#17
Cheng Ting Lin, Stefan Loy Zimmerman, Sally Elizabeth Mitchell, Elliot K Fishman
PURPOSE: To investigate pulmonary venous anomaly as a cause of pulmonary arteriovenous malformation (PAVM) misdiagnosis. MATERIALS AND METHODS: We reviewed adult patients within a 7.5-year period with CT scans initially diagnosed with PAVM and subsequent conventional pulmonary angiograms. RESULTS: Pulmonary arteriography showed no PAVM on arterial phase for 10 out of 99 patients, comprising the misdiagnosed group. Four misdiagnosed patients had pulmonary venous anomalies and six had nodular lesions on CT...
September 8, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28917137/apparent-diffusion-coefficient-in-the-analysis-of-prostate-cancer-determination-of-optimal-b-value-pair-to-differentiate-normal-from-malignant-tissue
#18
Nuno Adubeiro, Maria Luísa Nogueira, Rita G Nunes, Hugo Alexandre Ferreira, Eduardo Ribeiro, José Maria Ferreira La Fuente
PURPOSE: Determining optimal b-value pair for differentiation between normal and prostate cancer (PCa) tissues. METHODS: Forty-three patients with diagnosis or PCa symptoms were included. Apparent diffusion coefficient (ADC) was estimated using minimum and maximum b-values of 0, 50, 100, 150, 200, 500s/mm2 and 500, 800, 1100, 1400, 1700 and 2000s/mm2, respectively. Diagnostic performances were evaluated when Area-under-the-curve (AUC)>95%. RESULTS: 15 of the 35 b-values pair surpassed this AUC threshold...
September 8, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28898729/evaluation-of-the-multi-slice-computed-tomography-outcomes-in-diaphragmatic-injuries-related-to-penetrating-and-blunt-trauma
#19
REVIEW
Mehmet Turmak, Muhammed Akif Deniz, Cihan Akgül Özmen, Aydın Aslan
PURPOSE: Traumatic diaphragmatic rupture is a diagnostic challenge for both surgeons and radiologists and generally occurs secondary to blunt and penetrating trauma of thoracoabdominal region. MATERIAL AND METHODS: 56 patients who underwent surgical procedure due to blunt or penetrating trauma were included to the study. RESULTS: There were 37 diaphragmatic ruptures in the left side and 19 patients in the right side. The most common radiological finding was "the direct monitoring of defect" (54,3%)...
September 6, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28910681/the-imaging-spectrum-of-posterior-reversible-encephalopathy-syndrome-a-pictorial-review
#20
REVIEW
Emily Brady, Neal S Parikh, Babak B Navi, Ajay Gupta, Andrew D Schweitzer
Posterior reversible encephalopathy syndrome (PRES) is characterized by the acute onset of neurologic symptoms (headache, altered mental status, visual changes, seizures) with accompanying vasogenic edema on brain imaging. Risk factors for PRES include infection, uremia, malignancy, autoimmune disorders, the peripartum state and hypertension. PRES is classically described as being posterior (i.e. parieto-occipital) but radiologic variants are increasingly recognized. This pictorial review demonstrates the heterogeneity of the different radiologic presentations of PRES in reference to lesion distribution, hemorrhage, diffusion restriction, contrast enhancement, and other associated findings...
August 30, 2017: Clinical Imaging
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