scholarly journals Actinomyces meyeriPopliteal Cyst Infection and Review of the Literature

2017 ◽  
Vol 2017 ◽  
pp. 1-5
Author(s):  
Bharath Raj Palraj ◽  
Ala S. Dababneh
Keyword(s):  
Fluid Collection ◽  
Left Knee ◽  
Joint Fluid ◽  
Popliteal Cyst ◽  
Degenerative Arthritis ◽  
Posterior Aspect ◽  
Medial Meniscectomy ◽  
Complex Fluid ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Study

A 66-year-old, Caucasian male presented with pain and swelling involving the left knee of one-week duration. Arthrocentesis was negative for evidence of septic arthritis. Magnetic resonance imaging (MRI) study of the left knee showed degenerative arthritis, partial tear of medial meniscus, and a complex fluid collection along the posteromedial aspect of the left knee suggestive of popliteal cyst. He underwent arthroscopy with partial medial meniscectomy. Intraoperative joint fluid was noted to be cloudy but cultures were negative. Arthroscopic procedure provided him with temporary relief but the pain and swelling in the posterior aspect of the left knee recurred in 6 weeks. Repeat MRI showed complex fluid collection in the posterolateral aspect of left knee. Ultrasound guided aspiration of the fluid collection revealed purulent material and cultures grewActinomyces meyeri. He was treated with 6 weeks of intravenous penicillin regimen followed by 18 months of oral penicillin.

T1672 The Effects of Endogenous GLP-1 On Antro-Duodenal Contractility in the Fasted and Fed State: A Magnetic Resonance Imaging (MRI) Study

2009 ◽  
Vol 136 (5) ◽  
pp. A-555
Author(s):  
Elad Kaufman ◽  
Mark Fox ◽  
Michael Wyss ◽  
Zsofia Forras-Kaufman ◽  
Reto Treier ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Fed State ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Study

scholarly journals Assessment of Albumin ECM Accumulation and Inflammation as Novel In Vivo Diagnostic Targets for Multi-Target MR Imaging

Biology ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 964
Author(s):  
Jana Möckel ◽  
Julia Brangsch ◽  
Carolin Reimann ◽  
Jan O. Kaufmann ◽  
Ingolf Sack ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
Endothelial Damage ◽  
Plaque Burden ◽  
Signal Loss ◽  
Inductively Coupled ◽  
Before And After ◽  
Plasma Mass Spectrometry ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Study

Atherosclerosis is a progressive inflammatory vascular disease characterized by endothelial dysfunction and plaque burden. Extracellular matrix (ECM)-associated plasma proteins play an important role in disease development. Our magnetic resonance imaging (MRI) study investigates the feasibility of using two different molecular MRI probes for the simultaneous assessment of ECM-associated intraplaque albumin deposits caused by endothelial damage and progressive inflammation in atherosclerosis. Male apolipoprotein E-deficient (ApoE-/-)-mice were fed a high-fat diet (HFD) for 2 or 4 months. Another ApoE-/--group was treated with pravastatin and received a HFD for 4 months. T1- and T2*-weighted MRI was performed before and after albumin-specific MRI probe (gadofosveset) administration and a macrophage-specific contrast agent (ferumoxytol). Thereafter, laser ablation inductively coupled plasma mass spectrometry and histology were performed. With advancing atherosclerosis, albumin-based MRI signal enhancement and ferumoxytol-induced signal loss areas in T2*-weighted MRI increased. Significant correlations between contrast-to-noise-ratio (CNR) post-gadofosveset and albumin stain (R2 = 0.78, p < 0.05), and signal loss areas in T2*-weighted MRI with Perls’ Prussian blue stain (R2 = 0.83, p < 0.05) were observed. No interference of ferumoxytol with gadofosveset enhancement was detectable. Pravastatin led to decreased inflammation and intraplaque albumin. Multi-target MRI combining ferumoxytol and gadofosveset is a promising method to improve diagnosis and treatment monitoring in atherosclerosis.

scholarly journals Dorsal Wrist Pain in the Extended Wrist-Loading Position: An MRI Study

2017 ◽  
Vol 06 (04) ◽  
pp. 276-279 ◽  
Author(s):  
Erin Nance ◽  
David Byun ◽  
Yoshimi Endo ◽  
Scott Wolfe ◽  
Steve Lee
Keyword(s):  
Ganglion Cyst ◽  
Weight Bearing ◽  
Retrospective Chart Review ◽  
Wrist Pain ◽  
Control Group ◽  
Level Of Evidence ◽  
Ganglion Cysts ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Study ◽  
Dorsal Ganglion

Background The etiology of dorsal wrist pain associated with loading of the wrist in extension has not been clearly identified in the literature. Purpose Many exercise disciplines incorporate upper extremity weight-bearing exercises in an extended wrist posture, for example push-ups, plank position, and various yoga and Pilates poses. This study evaluates patients with dorsal wrist pain in the extended wrist-loading position and identifies anatomic abnormalities in the wrist using magnetic resonance imaging (MRI). Methods A retrospective chart review was performed comparing MRI of patients who complained of dorsal wrist pain while performing weight bearing in a wrist extension position with a control group of patients who complained of ulnar-sided wrist pain. The primary MRI outcome was dorsal wrist pathology, including occult dorsal ganglion cyst, scapholunate ligament tear or degeneration, and dorsal capsulitis. Results Dorsal wrist pathology was significantly more prevalent in patients with dorsal wrist pain (84%) than in the patient cohort with ulnar-sided wrist pain (12%). Occult dorsal ganglion cysts were the most common sources of pathology (76%). Conclusion MRI demonstrated an identifiable dorsal abnormality in 84% of patients with dorsal wrist pain associated with weight bearing on the extended wrist. Occult dorsal ganglion cysts are the most common cause of dorsal wrist pain, followed by partial scapholunate tears. When patients complain of dorsal wrist pain during specific extended loading wrist positions such as push-ups, yoga, or Pilates poses, an MRI may be warranted to help identify anatomic abnormalities that may help guide treatment choices. Level of Evidence Diagnostic, Level III.

Hydatid disease, hepatic injury and hypertonic saline: a clinical conundrum

2021 ◽  
Vol 14 (1) ◽  
pp. e238390
Author(s):  
Angus Lane ◽  
Hugh Wright
Keyword(s):  
Hypertonic Saline ◽  
Hydatid Disease ◽  
Fluid Collection ◽  
Left Lung ◽  
Sensu Stricto ◽  
Cystic Disease ◽  
Helminthic Infection ◽  
Right Lobe ◽  
Complex Fluid ◽  
The Right

Echinococcosis or human hydatid disease is a helminthic infection is caused by Echinococcus species. Classically, cystic echinococcosis is caused by Echinococcus granulosus sensu stricto, E. equinus, E. ortleppi and E. canadensis, though several other species have been implicated in hydatid disease. Echinococcus infection may lead to cystic disease of the liver, lungs and potentially other organs. Here we present a patient who had cystic disease of the lungs and liver. The patient initially experienced right upper quadrant pain and nausea, and later went on to develop a fever, cough and dyspnoea in the setting of hydropneumothorax. CT scan of the chest and abdomen revealed a large fluid collection at the left lung base and a large lobular complex fluid mass within the right lobe of the liver. Echinococcus titres were positive. The patient was commenced on albendazole; however, experienced significant derangement of liver enzymes within the following month. In light of this, the albendazole was ceased, and a hemi-hepatectomy was performed. During the hemi-hepatectomy there was some cyst content spillage, and subsequently a washout with hypertonic saline 3% was performed. This was followed by a course of praziquantel 1200 mg two times per day for 14 days. Repeat CT 6 months later demonstrated no evidence of recurrence.

Prevelance of Fabella: An MRI Study in The Eastern Anatolia Region Of Turkey

2021 ◽  
Vol 17 ◽  
Author(s):  
Huseyin Akdeniz ◽  
Sezai Ozkan ◽  
Cihan Adanas
Keyword(s):  
Femoral Condyle ◽  
Left Knee ◽  
Final Decision ◽  
Eastern Anatolia ◽  
Orthopedic Surgeons ◽  
Expert Radiologist ◽  
Number Of Patients ◽  
And Gender ◽  
The Right ◽  
Mri Study

Background: The fabella, which is generally located in the lateral head of the gastrocnemius muscle, is a sesamoid bone that articulates with the posterior face of the lateral femoral condyle. As traditional information, the prevalence of fabella is between 10–30% in the population and is usually present in both knees. Introduction: The objective of this study was to investigate the knee MRIs in the Eastern Anatolia Region of Turkey subjects in order to assess the prevalence of the fabella and analyse the differences between gender, age and laterality and its symmetry pattern. Methods: This study was a retrospective study in patients older than 18 years whose knee MRIs were taken between February 2014 and February 2016. In this study, a total of 531 patients [290 females and 241 males] were included. The radiographs were examined by two orthopedic surgeons and the fabella was located. Later, an expert radiologist made the final decision and confirmed the results. Results: The number of patients included in the study was 531. We detected os fabella in 59 (11.1%) patients. Of the 59 os fabella, 33 were in the right knee and 26 were in the left knee, 38 were female and 21were male. Conclusion: In this study, we investigated the age and gender differences besides the prevalence and the symmetry pattern of the fabella in the Eastern Anatolia Region of Turkey’s population. Prevalence of the fabella was found to be 11.1% which is different than previously published studies.

Morphological changes of intervertebral disc in relation with curve severity of patients with Adolescent Idiopathic Scoliosis – a T2-weighted MRI study

2021 ◽  
Author(s):  
KH Yeung ◽  
GCW Man ◽  
ALH Hung ◽  
TP Lam ◽  
JCY Cheng ◽  
...  
Keyword(s):  
Morphological Changes ◽  
Quantitative Imaging ◽  
Wedge Angle ◽  
Intervertebral Discs ◽  
Height Ratio ◽  
Distance Ratio ◽  
Volumetric Images ◽  
Magnetic Resonance Imaging Mri ◽  
Curve Severity ◽  
Mri Study

The purpose of this study was to evaluate the morphological changes of intervertebral discs (IVD) and vertebral bodies (VB) in AIS girls according to the subgroups with different curve severity by magnetic resonance imaging (MRI). This study included 33 age-matched female controls and 76 AIS girls with a right-sided thoracic curvature. Wedge angle, height ratio and distance ratio of VB and IVD were measured on the best midline coronal and sagittal planes from reformatted MRI spine. Volumes of VB, IVD and nucleus pulposus (NP) were evaluated on volumetric images. One-way ANOVA with Bonferroni correction was used. There was significant difference in wedge angle and height ratio of VB and IVD between AIS and controls. In severe-AIS, the position of NP was significantly shifted to the convexity when compared with non-severe AIS and controls. Whereas, the volume of IVD and NP in severe-AIS was found to be significantly smaller. On top of coronal wedging of VB and IVD, there was significantly reduced volume of IVD and NP in severe-AIS patients, despite T2 signal of IVD was preserved. The current findings indicate that early mechanical effects on the discs and vertebrae in adolescent scoliotic spine is evident on quantitative imaging. Importantly, these patients may be vulnerable to disc degeneration if no operative treatment is prescribed.

scholarly journals CAVERNOUS HAEMANGIOMA IN THE GASTROCNEMIUS MUSCLE: A RARE PRESENTATION IN THE GERIATRIC AGE GROUP

2014 ◽  
Vol 04 (03) ◽  
pp. 101-104 ◽  
Author(s):  
H. Ravindranath Rai ◽  
Arjun Ballal ◽  
Keerti Mohan ◽  
Rajsankar N. R.
Keyword(s):  
Correct Diagnosis ◽  
Left Knee ◽  
Cavernous Haemangioma ◽  
Rare Presentation ◽  
Posterior Aspect ◽  
Adequate Treatment ◽  
Capillary Haemangioma ◽  
Surgical Methods ◽  
Distinctive Type ◽  
Radiological Methods

AbstractIntramuscular haemangiomas are believed to be hamartomatous and are a distinctive type of haemangioma occurring within skeletal muscle. They account for less than 1% of all haemangiomas. They occur more often in trunk and extremity muscles.A sixty five year old lady presented with swelling and pain from the back of the left knee for two years.On clinical examination, a mass of about 10X10 cms in size was noted in the left popliteal fossa. The swelling was tender with well defined borders but fixed to the muscle. She had a flexion deformity of knee of ten degrees.MRI revealed a large encapsulated cystic lesion in the posterior aspect of the muscular compartment of the knee.She underwent excision of the mass, intraoperatively the mass was noted to be arising from the gastrocnemius. Histopathology revealed large cavernous filled spaces filled with blood which indicated a cavernous haemangioma.Most of the literature suggest the occurance of capillary haemangioma to be a commoner one. Occurance of a cavernous haemangioma is usually before the third decade and is congenital in most times. Most of the authors emphasize that radiological methods are generally insufficient for the correct diagnosis of intramuscular hemangiomas, and surgery is the treatment of choice to exclude malignancy and for adequate treatment of these lesions.Hence, the present case which we are reporting here is a rare occurance of a cavernous haemangioma of the gastrocnemius in a 65 year old lady, which was managed by surgical methods.

Clinical and Magnetic Resonance Imaging Predictors of Disability in Primary and Secondary Progressive Multiple Sclerosis

1996 ◽  
Vol 1 (4) ◽  
pp. 218-222 ◽  
Author(s):  
NA Losseff ◽  
DPE Kingsley ◽  
WI McDonald ◽  
DH Miller ◽  
AJ Thompson
Keyword(s):  
Magnetic Resonance Imaging ◽  
Multiple Sclerosis ◽  
Magnetic Resonance ◽  
Initial Study ◽  
Progressive Multiple Sclerosis ◽  
Resonance Imaging ◽  
Secondary Progressive ◽  
Short Period ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Study

The role of magnetic resonance imaging (MRI) in predicting disability in multiple sclerosis (MS) remains unclear. In this study 21 patients with primary and secondary progressive MS were reviewed 5 years following a serial MRI study of 6 months duration. In the secondary progressive group (n=11) there was a significant relationship between the occurrence of enhancing lesions and clinical relapses during the initial 6 months and increase in diability 5 years later. For both groups change in disability over the initial study period was predictive of outcome. These results suggest that the presence and frequency of gadolinium enhancement (a marker of inflammation) and changes in disability over a short period are predictive of future deterioration in progressive patients.

Velopharyngeal Structural and Muscle Variations in Children With 22q11.2 Deletion Syndrome: An Unsedated MRI Study

2019 ◽  
Vol 56 (9) ◽  
pp. 1139-1148 ◽  
Author(s):  
Lakshmi Kollara ◽  
Adriane L. Baylis ◽  
Richard E. Kirschner ◽  
D. Gregory Bates ◽  
Mark Smith ◽  
...  
Keyword(s):  
22Q11.2 Deletion Syndrome ◽  
Analysis Of Covariance ◽  
Deletion Syndrome ◽  
Control Group ◽  
Limited Information ◽  
22Q11.2 Deletion ◽  
Mri Protocol ◽  
Magnetic Resonance Imaging Mri ◽  
And Gender ◽  
Mri Study

Objective: The 22q11.2 deletion syndrome (22q11.2DS) is the most common genetic cause of velopharyngeal dysfunction; however, limited information exists regarding variations in velopharyngeal anatomy in this clinically challenging population. The purpose of this study was to examine velopharyngeal characteristics among young children with 22q11.2DS in comparison to a normative cohort using an innovative, nonsedated magnetic resonance imaging (MRI) scanning protocol. Methods: Fifteen children with 22q11.2DS and 15 age- and gender-matched controls with normal velopharyngeal anatomy (ages 4-12) successfully completed the MRI protocol. Eighteen velopharyngeal and 2 related craniofacial measures were examined. Analysis of covariance was used to compare differences between the experimental and the control groups. Results: The 22q11.2DS group demonstrated a significantly thinner velum ( P < .0005) and a larger pharyngeal depth ( P = .007) compared to the matched control group. Findings in the current study also demonstrated that the levator veli palatini muscle is significantly shorter ( P = .037) and thinner ( P = .025) in the 22q11.2DS cohort, with a significantly shorter origin-to-origin distance ( P < .0005) and a greater angle of origin ( P = .001) compared to healthy peers. Conclusion: Children with 22q11.2DS demonstrated multiple variations that may contribute to velopharyngeal dysfunction by altering the anatomic characteristics of the velopharyngeal port, the levator muscle, and associated structures. This investigation represents the first and largest attempt to characterize velopharyngeal anatomy in children with 22q11.2DS using a nonsedated MRI protocol.

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