Magnetic Resonance Imaging of Cysts, Cystlike Lesions, and Their Mimickers around the Knee Joint

2018 ◽  
Vol 69 (2) ◽  
pp. 197-214
Author(s):  
Sumer N. Shikhare ◽  
Poh Lye Paul See ◽  
Hong Chou ◽  
Abeer Mohamed Al-Riyami ◽  
Wilfred C.G. Peh
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Knee Joint ◽  
Vascular Lesions ◽  
Resonance Imaging ◽  
Diagnostic Challenge ◽  
Routine Magnetic Resonance Imaging ◽  
Mri Features ◽  
Pictorial Essay ◽  
Magnetic Resonance Imaging Mri

While interpreting routine magnetic resonance imaging (MRI) of the knee joint, a radiologist may encounter various cystic lesions such as ganglion, synovial, and meniscal cysts, among others. In some cases, MRI may demonstrate cystlike lesions around the knee due to fluid distention of normal bursa and recesses, the diagnosis of which should not be difficult if a radiologist is familiar with their characteristic location and MRI appearance. In addition, there are cyst mimickers such as hematomas, abscesses, vascular lesions, and neoplasms around knee joint that may pose a diagnostic challenge on routine MRI. Due to their atypical location and variable morphology, contrast administration is helpful as the enhancement pattern aids to differentiate them from cysts and cystlike lesions. This pictorial essay aims to classify cysts, cystlike lesions, and cyst mimickers in and around the knee joint based on their anatomic location and highlight their characteristic MRI features.

scholarly journals Efficacy of Routine Magnetic Resonance Imaging (MRI) in Evaluation of Knee Joint Pathologies

2020 ◽  
Vol 8 (1) ◽  
pp. 48-53
Author(s):  
Adil Ali Khan ◽  
Rajul Rastogi ◽  
Vijai Pratap ◽  
Satish Pathak ◽  
Ajay Pant ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Knee Joint ◽  
Cruciate Ligament ◽  
Mr Arthrography ◽  
Final Diagnosis ◽  
Joint Space ◽  
Resonance Imaging ◽  
Routine Magnetic Resonance Imaging ◽  
Magnetic Resonance Imaging Mri

Background: Imaging modalities like ultrasonography (USG), magnetic resonance imaging (MRI) and magnetic resonance arthrography (MRAr) provide different form of information about the joint space and tendons related to the knee joint. Knee is the most frequently examined joint by MRI / MRAr as it is relatively non-invasive and highly accurate in assessing joint structures, saving majority of patients from non-therapeutic arthroscopy procedures. The main objective of this study is to understand the comparative role of routine MRI and MRAr in our hospital settings. Subjects and Methods: Twenty-five patients included in the study underwent both MRI and MRAr on the same day. Results were interpreted by radiologists and data was tabulated with the final diagnosis established on MRAr. Results: Efficacy of MRI was inferior in evaluation of Anterior Cruciate ligament, meniscal and capsular tears. In patients, where MRI was normal, MR Arthrography revealed significant findings. Conclusion: Routine MRI misses significant outcome information when compared to MRAr in evaluation of knee joint. Hence, MR Arthrography should be done for optimal evaluation of knee joints in all patients especially those with clinicoradiological discordance.

scholarly journals Pathobiological and Radiological Approach For Hepatocellular Carcinoma Subclassification

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Francesco Vasuri ◽  
Matteo Renzulli ◽  
Silvia Fittipaldi ◽  
Stefano Brocchi ◽  
Alfredo Clemente ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Hepatocellular Carcinoma ◽  
Magnetic Resonance ◽  
Histopathological Analysis ◽  
Resonance Imaging ◽  
Imaging Diagnosis ◽  
Mri Features ◽  
Histopathological Evaluation ◽  
Magnetic Resonance Imaging Mri ◽  
Made In

Abstract Many advances have been made in the imaging diagnosis and in the histopathological evaluation of HCC. However, the classic imaging and histopathological features of HCC are still inadequate to define patient’s prognosis. We aimed to find the link between new proposed morphovascular patterns of hepatocellular carcinoma (HCC) and magnetic resonance imaging (MRI) features to identify pre-operatory markers of biologically aggressive HCC. Thirty-nine liver nodules in 22 patients were consecutively identified. Histopathological analysis and immunohistochemistry for CD34 and Nestin were performed to identify the four different HCC morphovascular patterns. MRI was performed using gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid. Three out of four morphovascular HCC patterns showed peculiar MRI features: in particular Pattern D (solid aggressive HCCs with CD34+/Nestin+ new-formed arteries) were isointense on T1-WI in 83% of cases and hyperintense on T2-WI in 50%. Five histologically-diagnosed HCC were diagnosed as non-malignant nodules on MRI due to their early vascularization and low aggressiveness (Pattern A). The comparison between histology and MRI confirms that a subclassification of HCC is possible in a pre-operatory setting. MRI seems to reinforce once more the identity of the different morphovascular HCC patterns and the possibility to pre-operatively identify HCCs with features of biological aggressiveness.

Subcutaneous diffuse neurofibroma of the neck: a case report

1996 ◽  
Vol 110 (2) ◽  
pp. 182-184 ◽  
Author(s):  
Sebastien Janssens de Varebeke ◽  
Arthur De Schepper ◽  
Esther Hauben ◽  
Frank Declau ◽  
Eric Van Marck ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Case Report ◽  
Magnetic Resonance ◽  
Young Patient ◽  
Resonance Imaging ◽  
Histopathological Features ◽  
Mri Features ◽  
Unusual Variant ◽  
Magnetic Resonance Imaging Mri

AbstractA case of a rare and unusual variant of neurofibroma, diffuse neurofibroma (paraneurofibroma), in a young patient is presented. The clinical, radiological and histopathological features of this case are reported. The magnetic resonance imaging (MRI) features of the diffuse neurofibroma are comparable with those described in other neurofibromas.

MRI Features of Cotyledonoid Dissecting Leiomyoma of the Uterus

2009 ◽  
Vol 95 (4) ◽  
pp. 532-534 ◽  
Author(s):  
Lorenzo Preda ◽  
Stefania Rizzo ◽  
Maria Sole Prevedoni Gorone ◽  
Roberta Fasani ◽  
Angelo Maggioni ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Surgical Excision ◽  
Resonance Imaging ◽  
Imaging Evaluation ◽  
Mri Features ◽  
Magnetic Resonance Imaging Mri ◽  
Cotyledonoid Dissecting Leiomyoma ◽  
Leiomyoma Of The Uterus ◽  
Fertile Women

Imaging evaluation of uterine masses is important to assess the type of lesion and to target surgery, if surgical excision is necessary. This can be decisive in fertile women with benign masses resembling malignancies, in order to avoid overtreatment. In this study, the magnetic resonance imaging (MRI) appearance of cotyledonoid dissecting leiomyoma of the uterus, a rare benign variant of leiomyoma mimicking malignancy, is presented.

Magnetic Resonance Imaging Bone Edema Is Not a Major Feature of Gout Unless There Is Concomitant Osteomyelitis: 10-year Findings from a High-prevalence Population

2011 ◽  
Vol 38 (11) ◽  
pp. 2475-2481 ◽  
Author(s):  
YIH JIA POH ◽  
NICOLA DALBETH ◽  
ANTHONY DOYLE ◽  
FIONA M. McQUEEN
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Bone Marrow Edema ◽  
Resonance Imaging ◽  
Tophaceous Gout ◽  
Mri Features ◽  
Bone Edema ◽  
High Prevalence ◽  
Blinded Manner ◽  
Magnetic Resonance Imaging Mri

Objective.Magnetic resonance imaging (MRI) is commonly used in autoimmune inflammatory arthritis to define disease activity and damage, but its role in gout remains unclear. The aim of our study was to identify and describe the MRI features of gout.Methods.Over a 10-year period we identified patients with gout who underwent MRI scanning of the hands or feet. Scans were reviewed for erosions, synovitis, tenosynovitis, tendinosis, bone edema, and tophi by a musculoskeletal radiologist and 2 rheumatologists in a blinded manner. MRI features in patients with uncomplicated gout were compared with features where concomitant osteomyelitis was diagnosed.Results.A total of 47 patients with gout (51 scans) were included: 33 (70%) had uncomplicated gout and 14 (30%) had gout complicated by osteomyelitis. MRI features included tophi in 36 scans (71%), erosions in 35 (69%), bone edema in 27 (53%), synovitis in 15 (29%), tenosynovitis in 8 (16%), and tendinosis in 2 (4%). Uncomplicated gout and gout plus osteomyelitis did not differ for most MRI features. However, “severe bone marrow edema” was much more common in gout plus osteomyelitis, occurring in 14/15 scans (93%) compared with 3/36 scans (8%) in uncomplicated gout (OR 154.0, 95% CI 14.7–1612, p < 0.0001). Sensitivity and specificity of “severe bone edema” for concomitant osteomyelitis were 0.93 (95% CI 0.68–0.99) and 0.92 (95% CI 0.78–0.98), respectively.Conclusion.MRI reveals that gout affects the joints, bones, and tendons. Bone edema in patients with chronic tophaceous gout is frequently mild and this contrasts with the “severe bone edema” observed in patients with concomitant osteomyelitis.

Emerging tumefactive multiple sclerosis after switching therapy from natalizumab to fingolimod

2012 ◽  
Vol 18 (11) ◽  
pp. 1650-1652 ◽  
Author(s):  
Sebastian Jander ◽  
Bernd Turowski ◽  
Bernd C Kieseier ◽  
Hans-Peter Hartung
Keyword(s):  
Magnetic Resonance Imaging ◽  
Multiple Sclerosis ◽  
Magnetic Resonance ◽  
Multiple Sclerosis Patient ◽  
Resonance Imaging ◽  
Mri Features ◽  
Switching Therapy ◽  
Magnetic Resonance Imaging Mri ◽  
First Time ◽  
Tumefactive Multiple Sclerosis

In this report we describe a multiple sclerosis patient who developed a relapse with magnetic resonance imaging (MRI) features of tumefactive demyelination after switching therapy from natalizumab to fingolimod. Tumefactive lesions emerged 16 weeks after stopping natalizumab and eight weeks after commencing fingolimod therapy but had been absent at the time of diagnosis and throughout the preceding course of the disease. Thus, the first-time occurrence of atypical lesion features may have been caused by the change in immunotherapy. The possible relevance of natalizumab withdrawal vs fingolimod introduction is discussed against the background of recently published case studies.

Nail Disease in Psoriatic Arthritis: Distal Phalangeal Bone Edema Detected by Magnetic Resonance Imaging Predicts Development of Onycholysis and Hyperkeratosis

2012 ◽  
Vol 39 (4) ◽  
pp. 841-843 ◽  
Author(s):  
NICOLA DALBETH ◽  
KAREN PUI ◽  
MARIA LOBO ◽  
ANTHONY DOYLE ◽  
PETER B. JONES ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Psoriatic Arthritis ◽  
Magnetic Resonance ◽  
Bone Erosion ◽  
Resonance Imaging ◽  
Mri Features ◽  
Bone Edema ◽  
Mri Scans ◽  
Magnetic Resonance Imaging Mri ◽  
Nail Disease

Objective.To examine the association between magnetic resonance imaging (MRI) features of distal phalanx (DP) disease and the progression of nail pathology in psoriatic arthritis (PsA).Methods.Clinical nail assessment and hand MRI scans were done on 34 patients with PsA. Twenty patients had repeat nail assessments after 1 year.Results.Nails with onycholysis and hyperkeratosis at baseline were more likely to have corresponding DP bone erosion and proliferation on MRI. DP bone edema on baseline MRI was associated with development of onycholysis and hyperkeratosis in corresponding nails.Conclusion.Our data suggest that DP inflammation is central in the development of psoriatic nail disease.

scholarly journals MRI features in the non-traumatic spinal cord injury patients presenting at the Korle Bu Teaching Hospital, Accra

2018 ◽  
Vol 52 (3) ◽  
pp. 127-132
Author(s):  
Hafisatu Gbadamosi ◽  
Yaw B. Mensah ◽  
Samuel Asiamah
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Magnetic Resonance ◽  
Spinal Metastases ◽  
Traumatic Spinal Cord Injury ◽  
Resonance Imaging ◽  
Mri Features ◽  
Cord Injury ◽  
Magnetic Resonance Imaging Mri

Background: Neurological limb deficit due to non-traumatic myelopathy is a disabling and distressing neurological condition.  In recent time Magnetic Resonance Imaging (MRI) has proven to be the ultimate imaging modality for evaluating pathologies of the spinal cord.Objective: To describe the Magnetic Resonance Imaging (MRI) features of patients with Non-Traumatic Spinal Cord Injury evaluated at the Korle Bu Teaching Hospital.Methods: A descriptive cross-sectional study was carried out at the Korle Bu Teaching Hospital (KBTH), Accra, Ghana. Results: Out of a total of 141 MRI’s evaluated 60.3% were males and 39.7% female. The majority of the respondents 85.1% had paraparesis/paraplegia,13.5% had quadriparesis/quadriplegia, 1.4% had weakness in one upper limb and both lower limbs. The commonest MRI features of NTSCI recorded was due to degenerative disease of the spine 75.9%, spinal metastases 5.7%, Pott's/pyogenic spondylitis 3.5%, demyelinating disease 2.8% and primary spinal tumours 2.8%.Conclusion: The commonest MRI findings in the study population were due to degenerative disease of the spine, followed by spinal metastases and infective spondylitis. Funding: Not declaredKeywords: paraparesis, paraplegia, tetraparesis, tetraplegia, Magnetic Resonance Imaging

Pictorial Essay: Pitfalls in Magnetic Resonance Imaging of the Shoulder

2012 ◽  
Vol 63 (4) ◽  
pp. 247-259 ◽  
Author(s):  
Chin K. Goh ◽  
Wilfred C.G. Peh
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Imaging Technique ◽  
Imaging Techniques ◽  
Diagnostic Errors ◽  
Magnetic Resonance Images ◽  
Resonance Imaging ◽  
Routine Magnetic Resonance Imaging ◽  
Pictorial Essay ◽  
Imaging Artifacts

Numerous imaging pitfalls of normal variants due to imaging technique and artifacts can be seen on routine magnetic resonance imaging of the shoulder. Familiarity with these pitfalls is crucial to avoiding diagnostic errors. Understanding of the common causes of shoulder imaging artifacts will enable the radiologist to make rational changes in imaging technique to eliminate or reduce the effects of artifacts on magnetic resonance images. This pictorial essay highlights possible pitfalls that arise from imaging techniques, imaging artifacts, and normal variations, and how they may be recognized.

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