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Clinical Imaging

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https://www.readbyqxmd.com/read/28624749/prevalence-and-clinical-significance-of-incidental-extra-mammary-findings-in-breast-magnetic-resonance-imaging-a-retrospective-study-of-1070-patients
#1
Wieland Staab, Jan Menke, Christian Sohns, Susanne Wienbeck, Lukas Bauer, Johannes Tammo Kowallick, Frank Konietschke, Thorsten Derlin, Joachim Lotz, Jan Martin Sohns
PURPOSE: The purpose of this study was to analyze the prevalence of extra-mammary findings in magnetic resonance imaging (MRI). MATERIALS AND METHODS: Data from 1070 consecutive breast MRI studies was analyzed. MR-BI-RADS (Breast Imaging Reporting and Data System) was used to classify the risk category. RESULTS: According to MR-BI-RADS, 915 (85.5%) of 1070 women were classified into MR-BI-RADS categories 1-3, and 155 (14.5%) into MR-BI-RADS categories 4-5...
June 10, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28624748/value-of-diagnostic-imaging-for-the-symptomatic-male-breast-can-we-avoid-unnecessary-biopsies
#2
Eric T Foo, Amie Y Lee, Kimberly M Ray, Genevieve A Woodard, Rita I Freimanis, Bonnie N Joe
PURPOSE: To review the use of diagnostic breast imaging and outcomes for symptomatic male patients. METHODS: We retrospectively evaluated 122 males who underwent diagnostic imaging for breast symptoms at our academic center. RESULTS: The majority (94%) of cases had negative or benign imaging, with gynecomastia being the most common diagnosis (78%). There were two malignancies, both of which had positive imaging. Fifteen patients underwent percutaneous biopsy, and over half (53%) were palpation-guided biopsies initiated by the referring clinician despite negative imaging...
June 9, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28601736/upper-extremity-non-contrast-magnetic-resonance-venography-mrv-compared-to-contrast-enhanced-mrv-and-ultrasound
#3
Ruth P Lim, Emma Hornsey, Dinesh Ranatunga, Huming Hao, Julie Smith, Tim Spelman, Jason Chuen, Mark Goodwin
PURPOSE: To assess feasibility, image quality and measured venous caliber of non-contrast MRV (NC-MRV) of central and upper extremity veins, compared to contrast-enhanced MRV (CE-MRV) and ultrasound (US) in healthy volunteers. MATERIALS AND METHODS: 10 subjects underwent NC-MRV and CE-MRV at 1.5 T, with comparison to US. Two radiologists evaluated MRI for image quality (IQ) and venous caliber. RESULTS AND CONCLUSIONS: NC-MRV is feasible, with inferior IQ but comparable venous caliber measurements CE-MRV (mean 7...
June 6, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28601735/clinical-utility-for-diffusion-mri-sequence-in-emergency-and-inpatient-spine-protocols
#4
REVIEW
Michael J Hoch, Joanne Rispoli, Mary Bruno, Mervin Wauchope, Yvonne W Lui, Timothy M Shepherd
Diffusion imaging of the spine has the potential to change clinical management, but is challenging due to the small size of the cord and susceptibility artifacts from adjacent structures. Reduced field-of-view (rFOV) diffusion can improve image quality by decreasing the echo train length. Over the past 2 years, we have acquired a rFOV diffusion sequence for MRI spine protocols on most inpatients and emergency room patients. We provide selected imaging diagnoses to illustrate the utility of including diffusion spine MRI in clinical practice...
June 6, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28622551/tips-and-tricks-to-optimize-mri-protocols-for-cutaneous-vascular-anomalies
#5
REVIEW
Mark D Mamlouk, Andrew D Nicholson, Daniel L Cooke, Christopher P Hess
Magnetic resonance imaging (MRI) serves as the principal imaging modality to diagnose and plan treatment for children with cutaneous vascular anomalies. While routine MRI protocols can lead to the correct diagnosis in the majority of cases, the imaging appearances can sometimes be nonspecific or confusing, yielding more than one possible diagnosis. This review highlights specific MRI sequence recommendations and scanning tips that can optimize the imaging protocol to increase diagnostic confidence.
May 31, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28586712/ultrasound-shear-wave-elastography-in-the-assessment-of-passive-biceps-brachii-muscle-stiffness-influences-of-sex-and-elbow-position
#6
Johnson Chen, Michael O'Dell, Wen He, Li-Juan Du, Pai-Chi Li, Jing Gao
OBJECTIVE: To assess differences in biceps brachii muscle (BBM) stiffness as evaluated by ultrasound shear wave elastography (SWE). METHODS: The passive stiffness of the BBM was quantified with shear wave velocity (SWV) measurements obtained from 10 healthy volunteers (5 men and 5 women, mean age 50years, age range 42-63 years) with the elbow at full extension and 30° flexion in this IRB-approved study. Potential differences between two depths within the muscle, two elbow positions, the two arms, and sexes were assessed by using two-tailed t-test...
May 31, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28577449/thoracic-spinal-osteochondroma-a-rare-presentation-of-spinal-cord-compression
#7
David R Hansberry, Raghav Gupta, Arpan V Prabhu, Nitin Agarwal, Mougnyan Cox, Upasana Joneja, Mark T Curtis, James S Harrop, Adam E Flanders
Osteochondromas are the most common benign bone tumor typically seen in the appendicular skeleton and are rarely found in the spine. We present a case of an osteochondroma of the spine presenting with spinal cord compression. 27-year-old male presented with lower extremity weakness and paresthesia, decreased lower extremity sensation, and decreased proprioception. MRI showed a heterogeneous mass with minimal peripheral enhancement and without restricted diffusion. CT demonstrated a calcified mass extending from the left facet joint of T11-T12 with medial extension, resulting in severe central canal stenosis and cord compression...
May 29, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28578246/appendiceal-ganglioneuroma-in-neurofibromatosis-type-2
#8
Yonah B Esterson, Aryeh Y Esterson, Gregory M Grimaldi, John S Pellerito, Robin J Warshawsky
Here we report the case of a 30-year-old woman with a history of neurofibromatosis type 2 (NF2) who presented with an incidentally discovered pelvic mass on an ultrasound. The identity of the mass remained indeterminate following a CT and MRI, although appendiceal pathology was suspected. An elective laparoscopy and appendectomy were performed without complication and pathology on the specimen demonstrated an appendiceal ganglioneuroma. To our knowledge, there has been no prior documented case of an appendiceal ganglioneuroma in a patient with NF2...
May 27, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28605654/the-impact-of-installing-an-mr-scanner-in-the-emergency-department-for-patients-presenting-with-acute-stroke-like-symptoms
#9
Stephanie E Honig, Lukasz S Babiarz, Evan L Honig, Saeedeh Mirbagheri, Victor Urrutia, David M Yousem
PURPOSE: We examined the impact of an MR scanner in the emergency department (ED) on ED length of stay (LOS), hospital (H) LOS, hospital admission rate, hospitalization costs, and ED re-presentation rate of patients presenting with stroke-like symptoms (SLS). We hypothesized that the ED MR would increase efficiency of patient care. METHODS: The number of MRIs performed in the ED vs. inpatient setting, EDLOS, HLOS, hospitalization charges, admission rate, discharge diagnoses, and 30-60-day ED re-presentation rates were determined for ED patients with SLS six months before (2011) and after (2012) ED MR installation...
May 26, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28600965/the-mammary-ridge-a-case-report-of-multiple-ectopic-breast-masses
#10
Rebecca Oudsema, William Simpson, Janet Szabo, Laurie R Margolies
Ectopic or accessory breasts describe residual breast tissue that fails to regress during normal embryologic development anywhere outside the expected locations. Ectopic breast tissue is seen in 2-6% of the population and is categorized into two types: supernumerary and aberrant breast tissue . The extent of development of this accessory tissue varies from rudimentary to complete with organized glandular and ductal development. Given this, it is possible for the same pathology that affects normally positioned breast tissue to also affect accessory breast tissue...
May 24, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28554050/xanthogranulomatous-pancreatitis-a-review-of-the-imaging-characteristics-of-this-rare-and-often-misdiagnosed-lesion-of-the-pancreas
#11
David Becker-Weidman, Bernard Floré, Koenraad J Mortelé
Xanthogranulomatous pancreatitis (XGP) is an extremely rare cause of a cystic pancreatic mass. The pathophysiology of this process is not entirely clear but likely results from a combination of duct obstruction, infection, and repeated hemorrhage. It is difficult to differentiate this inflammatory lesion from a cystic neoplasm and, therefore, in the majority of cases XGP is misdiagnosed as a neoplasm on preoperative imaging. In this report, we describe a case of XGP, the imaging characteristics of XGP, and a differential diagnosis for a cystic pancreatic lesion...
May 23, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28551486/qualitative-agreement-and-diagnostic-performance-of-arterial-spin-labelling-mri-and-fdg-pet-ct-in-suspected-early-stage-dementia-comparison-of-arterial-spin-labelling-mri-and-fdg-pet-ct-in-suspected-dementia
#12
Kathleen Weyts, Meike Vernooij, Rebecca Steketee, Roelf Valkema, Marion Smits
18FDG PET-CT is useful for early and differential diagnosis of dementia. ASL-MRI seems an attractive alternative. Visual agreement was calculated in 21 brain regions bilaterally in 9/11 patients with suspected early-stage dementia, excluding 2 patients due to ASL-MRI motion artefacts. Overall gross agreement was almost perfect and identical between and within modalities (κ=0.85-0.86, p<0.05). Intermodality regional agreement was variable, moderate (κ=0,56 in posterior cingulate) to perfect (including in precuneus), not different from intramodality agreement...
May 19, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28605653/left-ventricle-remodeling-in-patients-with-%C3%AE-thalassemia-major-an-emerging-differential-diagnosis-with-left-ventricle-noncompaction-disease
#13
Elisabetta Chiodi, Marianna Nardozza, Maria Rita Gamberini, Alessia Pepe, Massimo Lombardi, Giorgio Benea, Donato Mele
To differentiate left ventricle non-compaction (LVNC) from hypertrabeculated myocardium due to LV remodeling in β-thalassemia major (β-TM) patients, cardiac magnetic resonance (CMR) images of 38 β-TM patients and 10 LVNC patients were compared using 3 diagnostic criteria: ratio of diastolic segmental non-compacted to compacted myocardium (NC/C ratio) >2.5, percentage of non-compacted LV mass (NC-LVM%) >20% and >25% of global LV mass. Specificity of NC/C ratio of >2.5 was the lowest (58%) and of NC-LVM% of >25% the highest (93%)...
May 17, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28528792/commentary-on-false-negative-findings-of-plain-radiographs-in-body-packing
#14
LETTER
Simone Cappelletti, Costantino Ciallella
The use of terms "body packing" and "body pushing", both encompassed in the idiomatic expression "body packing", is still misunderstood by clinicians. "Body packing" is a general term used to indicate the internal transportation of drug packages within the gastrointestinal tract; while "Body pushing" refers to the insertion of drugs in anatomical cavities or body orifices, such as the anus, the vagina, and the ears. With the present paper, we would like to analyze and clarify some issues concerning the confounding definitions of body packing and the main reasons why some drug packages may be undetected at plain abdominal radiography, providing important false negative findings, as in the case commented...
May 15, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28551487/high-resolution-t2-mri-in-the-diagnosis-of-cerebellopontine-angle-and-internal-auditory-canal-lesions
#15
Jonathan T Maslan, Christopher M Lack, Michael Zapadka, Tyler G Gasser, Eric Oliver
High resolution T2 magnetic resonance imaging (MRI) can provide exquisite detail of internal auditory canal (IAC) and cerebellopontine angle (CPA) lesions. In this retrospective case series, blinded imaging sequences were delivered to three radiologists and compared with previously archived clinical reads that were non-blinded and incorporated both T1+C and T2 sequences together. This article demonstrates high sensitivity and specificity for high resolution T2 MRI particularly with lesions >5mm. This suggests a role for high resolution T2 MRI as an initial screening sequence or as a surveillance sequence...
May 13, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28501742/differences-in-the-imaging-features-and-distribution-of-non-indolent-and-indolent-mastocytosis-a-single-institution-experience-of-29-patients
#16
Yan Epelboym, Abhishek R Keraliya, Sree Harsha Tirumani, Jason L Hornick, Nikhil H Ramaiya, Atul B Shinagare
PURPOSE: Compare imaging features of indolent and non-indolent mastocytosis. METHODS: For 29 patients, imaging features, imaging indications, and distribution of indolent and non-indolent mastocytosis subtypes were analyzed. RESULTS: 16/29 (55%) patients had three distinct patterns of osseous abnormality, not significantly differing between cohorts. Non-indolent disease was more likely to present with hepatomegaly (p=0.0004), splenomegaly (p=0...
May 6, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28505504/standardization-of-the-apparent-diffusion-coefficient-value-of-bladder-cancer-across-different-centers-applicability-in-predicting-aggressive-pathologic-phenotypes
#17
Toshinori Nishizawa, Soichiro Yoshida, Fumitaka Koga, Hiroshi Tanaka, Mihiro Kaga, Kotaro Watanabe, Hiroshi Fukushima, Yasukazu Nakanishi, Minato Yokoyama, Junichiro Ishioka, Yoh Matsuoka, Kazutaka Saito, Yasuhisa Fujii, Kazunori Kihara
PURPOSE: We investigated whether the standardized apparent diffusion coefficient (ADC) value reflects bladder cancer characteristics across different centers. METHODS: Ninety-eight bladder cancer patients underwent MRI at two institutions. Standardized tumor ADC (sT-ADC) was calculated by dividing absolute tumor ADC (aT-ADC) by that of gluteus maximus. We compared ADCs between MRI protocols according to grade and T-stage. RESULTS: The differences in aT-ADC between MRI protocols were negated by sT-ADC...
May 5, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28500986/intradermal-invasive-lobular-carcinoma-presenting-not-everything-in-the-skin-is-benign
#18
Jennifer Wells Eaton, Michele B Drotman, Rachel M Sales, Elizabeth Kagan Arleo
In this case report, the history and imaging of two patients with invasive lobular carcinoma (ILC) in the skin are presented, followed by a discussion of both benign and malignant intradermal findings on breast ultrasound. Although the majority of dermal findings are benign, these cases are a reminder that malignancy can manifest within the skin. The purpose of presenting these cases together is to remind breast imagers of the importance of considering malignancy in the differential diagnosis of intradermal lesions on breast ultrasound, especially in special circumstances such as a personal history of breast cancer or associated clinical findings...
May 5, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28494279/gastrointestinal-stromal-tumor-presenting-as-a-right-adnexal-mass-with-histopathologic-correlation
#19
Etan Dayan, Hongfa Zhu, Alan B Copperman, Sara Lewis, Amita Kamath
The authors report and discuss a rare case of a gastrointestinal stromal tumor (GIST) in a 35-year-old female, which was pre-procedurally characterized as a right ovarian mass by magnetic resonance imaging (MRI) features. This manuscript reviews the imaging and clinical features of GISTs with pathologic correlation, and emphasizes how this entity may present a diagnostic challenge in certain anatomic regions owing in large part to its exophytic nature. This case is unique among similarly reported cases in that there was a "claw sign" with the right ovary, which provided convincing evidence of its point of origin...
May 5, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28494278/outcomes-of-ultrasound-guided-axillary-lymph-node-sampling-in-the-absence-of-primary-breast-cancer
#20
Kirema Garcia-Reyes, Heather I Greenwood, Elissa R Price
PURPOSE: To evaluate outcomes of lymph node sampling in patients with suspicious axillary nodes without a diagnosis of breast cancer. MATERIALS AND METHODS: We retrospectively identified all axillary ultrasound-guided sampling performed at our institution from 2003 to 2016 in patients. without malignancy. RESULTS: Seventy-eight lymph nodes met inclusion criteria. Two of the 78 sampled nodes (2.6%) were malignant. CONCLUSION: Sampling of suspicious nodes in patients without a history of breast cancer rarely yields malignancy...
May 5, 2017: Clinical Imaging
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