CT and MRI imaging of glomus tumors of the temporal bone

2018 ◽  
pp. 26-32
Author(s):  
E. A. Stepanova ◽  
М. V. Vishnyakova ◽  
V. I. Sambulov ◽  
I. Т. Mukhamedov
Keyword(s):  
Magnetic Resonance ◽  
Diagnostic Imaging ◽  
Temporal Bone ◽  
Glomus Tumor ◽  
Magnetic Resonance Tomography ◽  
Mri Imaging ◽  
Glomus Tumors ◽  
Magnetic Resonance Imaging Mri ◽  
Temporal Bone Tumor ◽  
Ct And Mri

Glomus tumor is one of the most common temporal bone tumors. Most of them are benign and locally invasive, some are occasionally able to metastasize and have signs of malignancy. Diagnostic imaging is necessary before treatment. Computer tomography (CT) is traditionally used as a primary method of diagnosis, to recognize changes in the temporal bone. Role of magnetic resonance imaging (MRI) in temporal bone tumor diagnosis is not definitively determined.Purpose. To assess the possibilities of computer and magnetic resonance tomography, to develop an algorithm for the application of diagnostic imaging methods in the diagnosis of glomus tumors of the temporal bone.Material and methods. The article presents the experience of diagnosing 30 patients with glomus tumors.Results. The tympanic form of the glomus tumor was observed in 11 cases (37%), tympano-yugular in 19 cases (63%). CT and MRI data totally coincided in cases of small tumors (type A and B). In the presence of extended forms CT ability of assessing bone invasion, involvement of the internal carotid artery, internal jugular vein, and dural sinuses was lower than the MRI.

scholarly journals Digital Glomus Tumor: Bibliographic Review of the Studies Published over the Past 10 Years

2021 ◽  
Vol 49 (01) ◽  
pp. 046-055
Author(s):  
Victoria Hernández ◽  
Tania Lena ◽  
Eliana Camacho ◽  
Matías Craviotto
Keyword(s):  
Glomus Tumor ◽  
Case Reports ◽  
Low Frequency ◽  
Benign Neoplasm ◽  
Surgical Excision ◽  
Soft Tissue Tumors ◽  
Glomus Tumors ◽  
The Past ◽  
Pubmed Search ◽  
Magnetic Resonance Imaging Mri

AbstractGlomus tumors are a mostly benign neoplasm that constitutes less than 4% of upper-limb soft-tissue tumors. Its unspecific clinical presentation, added to its low frequency, leads to a late diagnosis.The objective of the present study is to update the clinical-paraclinical approach and the surgical technique used in the treatment.We carried out a literature review from 2014 to 2019 on digital glomus tumor in the hand in adult patients using the PubMed search engine.In most of the publications analyzed, the diagnosis was clinical, with a delay of 1 to 10 years. Plain radiography is the most requested study; of the 16 articles reporting its indication, only half evidenced compatible changes. Magnetic resonance imaging (MRI) was requested in 15 articles, presenting normal results in 3 of them. The treatment of choice was surgical excision using a transungual approach. Only 4 articles report recurrence after excision.Although there is diversity in the approach to these tumors, we conclude that the diagnosis is clinical, and the treatment surgical, and there is no consensus regarding the paraclinical indication. The information available comes mainly from case reports, publications that contribute to the generation of evidence for the clinical practice in rare diseases such as this one.

scholarly journals Intravascular Glomus Tumor of the Forearm Causing Chronic Pain and Focal Tenderness

2014 ◽  
Vol 2014 ◽  
pp. 1-4 ◽  
Author(s):  
Sang Ki Lee ◽  
Dae Geon Song ◽  
Won Sik Choy
Keyword(s):  
Chronic Pain ◽  
Glomus Tumor ◽  
Rare Condition ◽  
Surgical Excision ◽  
Vascular Tumor ◽  
Glomus Tumors ◽  
Contrast Magnetic Resonance ◽  
History Of ◽  
Subcutaneous Layer ◽  
Magnetic Resonance Imaging Mri

Introduction. A glomus tumor is a benign vascular tumor derived from glomus cells and occurs mainly in the subcutaneous layer of the subungual or digital pulp. Extradigital glomus tumors have been reported within the palm, wrist, forearm, foot, bone, stomach, colon, cervix, and mesentery. Glomus tumors can originate from the intraosseous, intramuscular, periosteal, intravascular, and intraneural layers. However, a glomus tumor originating from the intravascular layer of the forearm is a rare condition.Case Report. A 44-year-old woman had a 7-year history of chronic pain and focal tenderness of the forearm. No hypersensitivity or sensory alterations were observed. Contrast magnetic resonance imaging (MRI) showed a mass measuring 5 × 3 × 2 mm leading to a vein. Surgical excision was performed, and the tumor was completely resected. Finding of gross examination revealed a dark-red, well-defined soft tissue tumor, and histologic examination confirmed that the mass was a glomus tumor. The patient’s symptoms were completely resolved postoperatively.Conclusion. Intravascular glomus tumors rarely occur in the forearm; therefore, a thorough physical exam, comprehensive medical history, in-depth imaging, and early surgical excision upon clinical suspicion may be helpful to prevent a delayed or incorrect diagnosis.

Magnetic Resonance Imaging of the Facial Nerve

1989 ◽  
Vol 101 (3) ◽  
pp. 295-301 ◽  
Author(s):  
Donald G. Wortham ◽  
Louis M. Teresi ◽  
Robert B. Lufkin ◽  
William N. Hanafee ◽  
Paul H. Ward
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Facial Nerve ◽  
Temporal Bone ◽  
Resonance Imaging ◽  
Mr Images ◽  
Beam Hardening ◽  
Parotid Tumors ◽  
Seventh Nerve ◽  
Magnetic Resonance Imaging Mri

Magnetic resonance imaging (MRI) of the facial nerve was evaluated by studying normal volunteers and patients with diseases of the facial nerve with a 0.3 Tesla permanent-magnet MRI system with special surface colls. The normal MR images were correlated with the anatomy of thin cryosection specimens of fresh cadavers. The seventh nerve was followed from its nucleus in the brainstem through the temporal bone to the parotid gland bed. The entire labyrinth and tympanic portions, as well as the geniculate ganglion, could be shown with appropriate scan planes. Examples of brainstem diseases affecting the facial nerve and nucleus, facial neuromas, parotid tumors involving the facial nerve, and other diseases were studied. MRI is a technique that allows unique evaluation of the entire course of the facial nerve. It produces superior Images of the facial nerve with high-contrast resolution. Unlike computed tomography, there is no beam-hardening artifact from the temporal bone or exposure to ionizing radiation and contrast agents. MRI also allows visualization of the main trunks of the facial nerve in the parotid bed not possible with any other imaging technique.

Imaging-based stereotaxic serial biopsies in untreated intracranial glial neoplasms

1987 ◽  
Vol 66 (6) ◽  
pp. 865-874 ◽  
Author(s):  
Patrick J. Kelly ◽  
Catherine Daumas-Duport ◽  
David B. Kispert ◽  
Bruce A. Kall ◽  
Bernd W. Scheithauer ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Contrast Enhancement ◽  
Tumor Tissue ◽  
Magnetic Resonance Images ◽  
Low Grade ◽  
Content Type ◽  
Mri Scans ◽  
Isolated Tumor Cell ◽  
Magnetic Resonance Imaging Mri ◽  
Ct And Mri

✓ Forty patients with previously untreated intracranial glial neoplasms underwent stereotaxic serial biopsies assisted by computerized tomography (CT) and magnetic resonance imaging (MRI). Tumor volumes defined by computer reconstruction of contrast enhancement and low-attenuation boundaries on CT and T1 and T2 prolongation on MRI revealed that tumor volumes defined by T2-weighted MRI scans were larger than those defined by low-attenuation or contrast enhancement on CT scans. Histological analysis of 195 biopsy specimens obtained from various locations within the volumes defined by CT and MRI revealed that: 1) contrast enhancement most often corresponded to tumor tissue without intervening parenchyma; 2) hypodensity corresponded to parenchyma infiltrated by isolated tumor cells or in some instances to tumor tissue in low-grade gliomas or to simple edema; and 3) isolated tumor cell infiltration extended at least as far as T2 prolongation on magnetic resonance images. This information may be useful in planning surgical procedures and radiation therapy in patients with intracranial glial neoplasms.

Incidental magnetic resonance image sinus abnormalities in asymptomatic Australian children

2003 ◽  
Vol 117 (12) ◽  
pp. 969-972 ◽  
Author(s):  
Wye-Keat Lim ◽  
Bhaskar Ram ◽  
Stephen Fasulakis ◽  
Kevin J. Kane
Keyword(s):  
Magnetic Resonance ◽  
X Rays ◽  
Upper Respiratory Tract ◽  
Mri Scans ◽  
Adults And Children ◽  
Mucosal Changes ◽  
Magnetic Resonance Imaging Mri ◽  
Definition Of ◽  
Tract Infections ◽  
Ct And Mri

Plain X-rays, computed tomography (CT) and magnetic resonance imaging (MRI) scans performed for non-ENT reasons often reveal incidental sinus mucosal changes. These changes need to be correlated clinically before diagnosing rhinosinusitis. This study examined the prevalence of such changes in MRI scans in children up to age 16. Scans were scored using an adapted Lund-Mackay classification and were positive when one or more sinuses showed abnormalities. Randomly selected scans in the retrospective arm revealed a prevalence of 20 of 62 (32 3 per cent). In the prospective arm 45 of 60 children were defined as truly asymptomatic, of which 14 scans (31 per cent) were positive. Other studies in adults and children using CT and MRI report a prevalence range of roughly 30 to 45 per cent. This variability may be attributed to differences of study design, definitions of population age, definitions of asymptomatic and definition of abnormal sinus. Other plausible factors to explain regional differences are climate and frequency of upper respiratory tract infections.

scholarly journals THE ROLE OF CT AND MRI IN THE DIAGNOSIS OF TYMPANIC AND JUGULAR GLOMUS TUMORS OF THE TEMPORAL BONE

2020 ◽  
Vol 10 (1) ◽  
pp. 150-158
Author(s):  
A.B. Shebunina ◽  
◽  
E.Ye. Avetisyan ◽  
N.S. Serova ◽  
◽  
...  
Keyword(s):  
Temporal Bone ◽  
Glomus Tumors ◽  
Ct And Mri

scholarly journals Magnetic resonance tomography capabilities and limitations in managing the efficacy of treatment with biological disease modifying anti-rheumatic drugs in ankylosing spondylitis

2021 ◽  
Vol 15 (2) ◽  
pp. 29-34
Author(s):  
P. A. Shesternya ◽  
O. D. Gritsenko ◽  
P. A. Astanin ◽  
A. Yu. Stepanenko ◽  
N. V. Popov
Keyword(s):  
Ankylosing Spondylitis ◽  
Magnetic Resonance ◽  
Laboratory Data ◽  
Magnetic Resonance Tomography ◽  
Interleukin 17 ◽  
Drug Of Choice ◽  
Significant Difference ◽  
Disease Modifying ◽  
Magnetic Resonance Imaging Mri ◽  
Factor Α

Extensive use of magnetic resonance imaging (MRI) in clinical practice revolutionized our understanding of the pathogenesis of axis spondyloarthritis (aSpA) and treatment approaches. The use of MRI to diagnose non-radiographic aSpA is well established. At the same time, the possibility of its use for follow-up and treatment assessment is actively discussed.Objective: To present comparative analysis of clinical and laboratory data, reflecting the activity of the disease, and analysis of MRI results in patients with ankylosing spondylitis (AS) receiving biological disease modifying anti-rheumatic drugs therapy (bDMARDs).Patients and methods. The study included 39 patients with AS, mainly men (74.3%), 24 patients (61.5%) had late and 15 (38.5%) – advanced stage of the disease. The average age was 41.0 [34.0; 48.0] years. All patients were administered bDNARDs; inhibitors of the tumor necrosis factor α or inhibitors of interleukin 17 were drug of choice. The median of treatment duration was 1.5 [1.0; 4,5] year. All patients had sacroiliac (SI) and spinal MRI. The activity of the disease was estimated using BASDAI and ASDAS-CRP/ESR indexes, functional disorders – using the BASFI questionnaire. Results and discussion. There was no significant difference in disease activity between patients with osteitis in the SI/spine or without it: BASDAI – 4.7 [2.7; 5,5] and 4.2 [2.9; 8,1], respectively (p=0.533); ASDAS-ESR – 2.6 [2.2; 3,0] and 2.6 [2.2; 3,2], respectively (p=0.725); ASDAS-CRP – 2.5 [2.1; 3,4] and 3.1 [2.8; 3.9], respectively (p=0.172). There was no significant difference in the number of osteitis foci between group of patients who have achieved the therapeutic target (ASDAS < 2.1) and those who have not (ASDAS ≥2.1) – 1.0 [0.0; 3.5] and 1.0 [1.0; 4.0], respectively, (p=0.376), and no difference in amount of inflammatory changes – 1.0 [0.2; 1.7] and 0.1 [0.0; 1,1] cm3, respectively (p=0.124). Conclusion. The data suggests a limited MRI informative value as a method for managing the efficacy of bDMARDs treatment in patients with the advanced / late stage of the AS.

scholarly journals Anatomy and Pathology of the Texel Sheep Larynx

2019 ◽  
Vol 6 (1) ◽  
pp. 21 ◽  
Author(s):  
Katie Waine ◽  
Ben Strugnell ◽  
John Remnant ◽  
Fiona Lovatt ◽  
Martin Green ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Upper Respiratory Tract ◽  
Resonance Imaging ◽  
Laryngeal Disease ◽  
Upper Respiratory ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Measurements ◽  
Ct And Mri

Laryngeal chondritis, or “Texel throat”, is a disease affecting the upper respiratory tract of sheep with breeds like the Texel appearing to be predisposed. Previous work suggests the conformation of these breeds of sheep may be predisposing these animals to laryngeal disease. This study evaluated the anatomy of the Texel sheep larynx and describes incidental pathology. Forty-three larynges from rams of the Texel and Bluefaced Leicester breeds of sheep were measured and photographed. A larynx from each breed was submitted for computed tomography (CT) and magnetic resonance imaging (MRI). Measurements, photography, CT, and MRI demonstrated a difference in the anatomy of the larynx between breeds and a higher proportion of Texel sheep had laryngeal lesions. This study supports the hypothesis that the anatomy of the Texel sheep could be pre-disposing the breed to laryngeal chondritis.

Imaging Advances of the Cardiopulmonary System

2011 ◽  
pp. 2183-2190
Author(s):  
Holly Llobet ◽  
Paul Llobet ◽  
Michelle LaBrunda
Keyword(s):  
Radiation Dose ◽  
Radiation Exposure ◽  
High Speed ◽  
Imaging Techniques ◽  
Radioactive Material ◽  
Imaging Modalities ◽  
Mri Imaging ◽  
Imaging Technology ◽  
Magnetic Resonance Imaging Mri ◽  
Ct And Mri

A technological explosion has been revolutionizing imaging technology of the heart and lungs over the last decade. These advances have been transforming the health care industry, both preventative and acute care medicine. Ultrasound, nuclear medicine, computed tomography (CT), and magnetic resonance imaging (MRI) are examples of radiological techniques which have allowed for more accurate diagnosis and staging (determination of severity of disease). The most notable advances have occurred in CT and MRI. Most medical subspecialties rely on CT and MRI as the dominant diagnostic tools an exception being cardiology. CT and MRI are able to provide a detailed image of any organ or tissue in the body without the necessity of invasive or painful procedures. Virtually any individual could be tested as long as they are able to remain immobile for the duration of the study. Image generation traditionally has been limited by the perpetual motion of the human body. For example, the human heart is continually contracting and relaxing without a stationary moment during which an image could be obtained. Lung imaging has been more successful than cardiac imaging, but studies were limited to the length of time an ill person is able to hold his or her breath. Historically, imaging technology was limited by inability to take a picture fast enough of a moving object while maintaining a clinically useful level of resolution. Recent technologic innovation, resulting in high speed electrocardiogram- gated CT and MRI imaging, now allows the use of these imaging modalities for evaluation of the heart and lungs. These novel innovations provide clinicians with new tools for diagnosis and treatment of disease, but there are still unresolved issues, most notably radiation exposure. Ultrasound and MRI studies are the safest of the imaging modalities and subjects receive no radiation exposure. Nuclear studies give an approximate radiation dose of 10mSv and as high as 27mSv (Conti, 2005). In CT imaging, radiation dose can vary depending on the organ system being imaged and the type of scanner being used. The average radiation dose for pulmonary studies is 4.2mSv (Conti, 2005). The use of multi-detector CT (MDCT) to evaluate the heart can range from 6.7—13mSv. To put it into perspective, according to the National Institute of Health, an average individual will receive a radiation dose of 360mSv per year from the ambient environment. It is unlikely that the radiation doses received in routine imaging techniques will lead to adverse reactions such as cancer, but patients should be informed of the risks and benefits of each procedure so that they can make informed decisions. It is especially important that patients be informed when radioactive material is to be injected into their bodies. The reasons for this will be discussed later on in the chapter.

Possibilities of Magnetic Resonance Tomography in Diagnosis of Pulmonary Arterial Hypertension

Kardiologiia ◽  
2021 ◽  
Vol 61 (6) ◽  
pp. 97-104
Author(s):  
A. M. Shariya ◽  
T. V. Martynyuk ◽  
S. K. Ternovoy ◽  
M. A. Shariya
Keyword(s):  
Pulmonary Arterial Hypertension ◽  
Magnetic Resonance ◽  
Arterial Hypertension ◽  
Magnetic Resonance Tomography ◽  
Noninvasive Evaluation ◽  
Pulmonary Arterial ◽  
Effect Of Treatment ◽  
Magnetic Resonance Imaging Mri ◽  
And Function ◽  
Reliable Methods

The emergence of more effective methods for treatment of pulmonary arterial hypertension (PAH) has called for more reliable methods of diagnostics, monitoring, and evaluating responses to the treatment. More reports have become available about the relevance of using magnetic resonance imaging (MRI) for examination of patients with PAH. This review provides data on the significance of MRI for noninvasive evaluation of the heart structure and function in patients with PAH, as well as for visualization and evaluation of the remodeling of the pulmonary circulation. According to the data presented in this review, the results obtained with various, modern MRI technologies can be used for monitoring the effect of treatment and for risk stratification in patients with PAH.

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