scholarly journals Magnetic Resonance Imaging Profile of Chordomas - A Retrospective Evaluation from a Tertiary Institution of Eastern India

2020 ◽  
Vol 7 (46) ◽  
pp. 2730-2734
Author(s):  
Bhaskar Bhattacharyya ◽  
Amit Kumar Das ◽  
Arijit Roy ◽  
Aprateem Mukherjee ◽  
Tapan Dhibar ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Soft Tissue ◽  
Signal Intensity ◽  
Bone Destruction ◽  
Resonance Imaging ◽  
Tissue Component ◽  
Soft Tissue Component ◽  
Rare Tumours ◽  
Craniospinal Axis

BACKGROUND Chordomas are tumours presumed to originate from the remnants of embryonic notochord. They present a diagnostic challenge as they can occur in any region within the craniospinal axis and are rare with an incidence of less than 0.1 / 100,000 per year. Imaging is required for their evaluation and magnetic resonance imaging (MRI) is the imaging modality of choice due to excellent soft tissue resolution, multiplanar imaging capabilities and precise anatomical delineation. METHODS MRI scans of 10 patients, who had proven chordomas histologically, were evaluated retrospectively in the Department of Radiodiagnosis, Bangur Institute of Neurosciences from July 2012 to June 2018. Patients without histological proof of chordomas and those lost to follow-up were not included in the study. Clinical information such as age, sex, presenting symptoms were noted. Imaging parameters assessed included tumour location, bone destruction, extraspinal soft tissue component, spinal canal and neural foramina encroachment, arterial encasement, signal intensity, morphology and enhancement pattern by MRI. All the cases were scanned in a 1.5 Tesla MRI machine. Intravenous contrast were used in all cases. RESULTS Of the 10 cases, 7 were male and 3 were female. There were 7 cases of sacrococcygeal chordomas and 3 cases of clival chordomas. The tumours appeared as multilobulated masses with bone destruction. All sacrococcygeal lesions involved more than one vertebral segment with extraspinal soft tissue component encroaching the pelvic cavity and showed cystic spaces containing hypointense septae. All 3 cases of clival chordomas showed compression of the pons and basilar artery. In one case there was compression of optic chiasma with displacement of internal carotid arteries laterally. On T1 weighted imaging, the chordomas were isointense in 4 and hypointense in 6 cases. These tumours were hyperintense in T2WI in 8 and intermediate to high in signal intensity in 2 cases. All demonstrated heterogenous enhancement on contrast with moderate enhancement in 8 patients and mild enhancement in 2 cases. CONCLUSIONS Chordomas are rare tumours that can occur anywhere in the craniospinal axis. MRI is the modality of choice for imaging of chordomas. Characteristic findings in MRI include low to intermediate signal intensity on T1w images and high signal intensity on T2w images. Sacral chordomas have T2 hyperintense cystic masses with hypointense septa. Enhancement is heterogenous ranging from mild to moderate. MRI is invaluable for a pre-operative diagnosis, delineation of tumour extent and as roadmap for surgery and radiotherapy. KEYWORDS Chordomas, Magnetic Resonance Imaging, Clivus, Sacrococcygeal

scholarly journals Glomus tumour

2016 ◽  
Vol 98 (1) ◽  
pp. e1-e2
Author(s):  
C Sethu ◽  
AU Sethu
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Soft Tissue ◽  
Clinical Examination ◽  
Late Diagnosis ◽  
Glomus Tumour ◽  
Resonance Imaging ◽  
Soft Tissue Tumours ◽  
Delay In Diagnosis ◽  
Rare Tumours

Glomus tumours are rare tumours accounting for only 1–5% of soft tissue tumours of the hand. They are described classically in the subungual region. We present the case of a 32-year-old woman with a late diagnosis of a glomus tumour that had caused her excruciating pain. Clinical examination was positive for Hildreth’s sign and the Love test. Magnetic resonance imaging delineated the tumour, which was excised and confirmed histologically. This case highlights the continued delay in diagnosis of glomus tumours as well as the use of imaging in diagnosis and planning of surgery.

Magnetic Resonance Imaging in Retropharyngeal Tendinitis

Cephalalgia ◽  
1994 ◽  
Vol 14 (4) ◽  
pp. 266-269 ◽  
Author(s):  
K Ekbom ◽  
J Tothall ◽  
K Annell ◽  
J Träff
Keyword(s):  
Magnetic Resonance Imaging ◽  
Cervical Spine ◽  
Magnetic Resonance ◽  
Soft Tissue ◽  
Signal Intensity ◽  
Soft Tissues ◽  
Resonance Imaging ◽  
X Ray ◽  
Soft Tissue Swelling ◽  
Retropharyngeal Tendinitis

Seven consecutive patients with acute retropharyngeal tendinitis underwent plain X-ray and magnetic resonance imaging (MRI) of the cervical spine. All seven had marked soft tissue swelling anterior to C1 and C2 on plain X-ray, and soft tissue calcification at this level was present in five of them. On MRI, there was markedly increased signal intensity on T2-weighted images in the acute phase and intermediate signal intensity on T1-weighted images, anterior to the level of C1 and C2, often extending as far down as C6. These changes correlated well with the soft tissue swelling seen on conventional X-ray of the cervical spine. The maximum mid-sagittal thickness of the soft tissues was significantly greater in the tendinitis patients ( p < 0.001) than in 12 control subjects free of symptoms from the pharynx or the cervical spine. Treatment with non-steroidal anti-inflammatory drugs rapidly alleviated symptoms, and at follow-up MRI showed regression or complete restitution of the changes. In conclusion, MRI can visualize the edematous changes in the longus colli muscle and adds useful diagnostic information in suspected cases of acute retropharyngeal tendinitis.

scholarly journals Magnetic resonance imaging of the normal dromedary camel tarsus

2020 ◽  
Author(s):  
Usama Hagag ◽  
Zakriya Ali Almohamad ◽  
Mohamed Gomaa Tawfiek ◽  
Ayman El Nahas
Keyword(s):  
Magnetic Resonance Imaging ◽  
Articular Cartilage ◽  
Magnetic Resonance ◽  
Soft Tissue ◽  
Synovial Fluid ◽  
Signal Intensity ◽  
High Signal ◽  
Dromedary Camel ◽  
Resonance Imaging ◽  
Intermediate Signal Intensity

Abstract Background The role of magnetic resonance imaging (MRI) in veterinary practice continues to grow. MRI is currently the most versatile and informative imaging modality for diagnosis of soft tissue injuries in many animal species; however, veterinary literature describing the MRI of the dromedary camel tarsus is lacking. Our purpose was to describe and compare the MRI images of twelve cadaveric tarsi, examined in 1.5 T MRI scanner, with their corresponding anatomical gross sections. Turbo spin-echo (TSE) T1-weighted (T1), T2-weighted (T2), proton density-weighted (PD) and short tau inversion recovery (STIR) sequences were obtained in 3 planes. Tarsi were sectioned into sagittal, dorsal and transverse planes. Relevant osseous and soft tissue structures on MRI images and corresponding cryosections were identified and labeled. Results The overall quality of MRI images was adequate and informative. The soft and osseous tissues of the dromedary camel tarsus corresponded well with the gross anatomic sections. The sagittal and dorsal images were the most valuable for evaluation of articular cartilage and subchondral bone. T1 and PD sequences provided high anatomical details. T2 and STIR images were valuable for evaluation of synovial fluid. Articular cartilage had homogenous intermediate signal intensity. Subchondral and cortical bone had low signal intensity and cancellous bone had heterogeneous signal intensity. Tendons and ligaments had low signal intensity. Synovial fluid had high signal intensity on T2, PD and STIR sequences and intermediate signal intensity on T1 images. Conclusions MRI images provided a thorough evaluation of the normal dromedary camel tarsus. Information provided in the current study is anticipated to serve as a basis for interpretation in clinical situations.

scholarly journals Magnetic resonance imaging features of large joint tuberculous arthritis

2021 ◽  
Vol 0 ◽  
pp. 1-6
Author(s):  
Shalini Agarwal ◽  
Lalit Mohan ◽  
Preeti Lamba ◽  
Sanjay Kumar
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Soft Tissue ◽  
Signal Intensity ◽  
Imaging Features ◽  
Resonance Imaging ◽  
Tuberculous Arthritis ◽  
Large Joint ◽  
Rim Enhancement ◽  
Grade Iii

Objectives: Large joint monoarticular tuberculous involvement is rare. It may not be associated with classical clinical features. Hence, it is difficult to differentiate from other conditions similarly involving the large joints. Our study aimed to study the characteristics of large joint monoarthritis on magnetic resonance imaging. Material and Methods: We reviewed the radiology database for large joint tubercular arthritis cases over 2 years. In total, there were 21 patients. Male: female ratio was 11:10. The mean age was 34.14 ± 15.82 years with a range of 8–57 years. We diagnosed tuberculosis (TB) based on histopathological examination or response to antitubercular therapy. Results: Knee was most frequently involved (47%; n = 10) followed by wrist and elbow in 3 patients each (14.28%). Concomitant active pulmonary TB was absent in all of our patients. Grade I synovial thickening was seen in eight patients, Grade II in four, and Grade III in seven. It was uniform in all the cases. Grade 1 bone marrow edema was seen in 06 patients, Grade III in 13, and none in 02. There was soft-tissue edema in 12 patients and soft-tissue collection in 2. Bone erosions were seen in 16 patients with rim enhancement in nine patients. Central erosions were seen in eight, while central and peripheral erosions in eight. On T1-weighted images, the signal intensity was hyperintense 10 and isointense in 11 patients. While on T2-weighted images, it was hyperintense in 10, isointense in nine, and hypointense in two patients. Conclusion: Large joint monoarticular tuberculous arthritis can present variably. Large erosions with rim enhancement, the signal intensity of synovium on T1 weighted and T2 weighted, uniformity of synovial thickening, and enhancement pattern of abscesses can help make a diagnosis.

Influence of preoperative statins and aspirin administration on biological and magnetic resonance imaging properties in patients with abdominal aortic aneurysm

VASA ◽  
2020 ◽  
pp. 1-9
Author(s):  
Milos Sladojevic ◽  
Petar Zlatanovic ◽  
Zeljka Stanojevic ◽  
Igor Koncar ◽  
Sasenka Vidicevic ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Abdominal Aortic Aneurysm ◽  
Magnetic Resonance ◽  
Aortic Aneurysm ◽  
Signal Intensity ◽  
Psoas Muscle ◽  
Resonance Imaging ◽  
Maximal Diameter ◽  
Aneurysm Wall ◽  
Abdominal Aortic

Summary: Background: Main objective of this study was to evaluate the influence of statins and/or acetylsalicylic acid on biochemical characteristics of abdominal aortic aneurysm (AAA) wall and intraluminal thrombus (ILT). Patients and methods: Fifty patients with asymptomatic infrarenal AAA were analyzed using magnetic resonance imaging on T1w sequence. Relative ILT signal intensity (SI) was determined as a ratio between ILT and psoas muscle SI. Samples containing the full ILT thickness and aneurysm wall were harvested from the anterior surface at the level of the maximal diameter. The concentration of enzymes such as matrix metalloproteinase (MMP) 9, MMP2 and neutrophil elastase (NE/ELA) were analyzed in ILT and AAA wall; while collagen type III, elastin and proteoglycan 4 were analyzed in harvested AAA wall. Oxidative stress in the AAA wall was assessed by catalase and malondialdehyde activity in tissue samples. Results: Relative ILT signal intensity (1.09 ± 0.41 vs 0.89 ± 0.21, p = 0.013) were higher in non-statin than in statin group. Patients who were taking aspirin had lower relative ILT area (0.89 ± 0.19 vs 1.13. ± 0.44, p = 0.016), and lower relative ILT signal intensity (0.85 [0.73–1.07] vs 1.01 [0.84–1.19], p = 0.021) compared to non-aspirin group. There were higher concentrations of elastin in AAA wall among patients taking both of aspirin and statins (1.21 [0.77–3.02] vs 0.78 (0.49–1.05) ng/ml, p = 0.044) than in patients who did not take both of these drugs. Conclusions: Relative ILT SI was lower in patients taking statin and aspirin. Combination of antiplatelet therapy and statins was associated with higher elastin concentrations in AAA wall.

The Role of Magnetic Resonance Imaging for Diagnosing Soft Tissue Lesions Associated with Anterior Cruciate Ligament Injuries

2018 ◽  
Vol 69 (9) ◽  
pp. 2498-2500
Author(s):  
Bogdan Sendrea ◽  
Antoine Edu ◽  
George Viscopoleanu
Keyword(s):  
Magnetic Resonance Imaging ◽  
Anterior Cruciate Ligament ◽  
Magnetic Resonance ◽  
Soft Tissue ◽  
Traumatic Event ◽  
Cruciate Ligament ◽  
Soft Tissue Injuries ◽  
Resonance Imaging ◽  
Soft Tissue Lesions ◽  
Anterior Cruciate

Magnetic resonance imaging has become the gold standard for soft tissue lesions evaluation especially after a traumatic event where there is need for diagnostic confirmation. The objective of the current paper was to evaluate the ability of magnetic resonance imaging in diagnosing soft tissue lesions in patients who underwent anterior cruciate ligament reconstruction compared with arthroscopic findings. Through the ability to diagnose soft tissue injuries, particularly meniscal lesions, magnetic resonance imaging should be considered as fundamental in guiding therapeutic management in patients with anterior cruciate ligament lesions.

Imaging of soft tissue tumors

2020 ◽  
Vol 16 ◽  
Author(s):  
Shinji Tsukamoto ◽  
Andreas F. Mavrogenis ◽  
Yasuhito Tanaka ◽  
Costantino Errani
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Soft Tissue ◽  
Tumor Size ◽  
Critical Role ◽  
Evaluation Criteria ◽  
Soft Tissue Tumors ◽  
Resonance Imaging ◽  
Benign Soft Tissue Tumors ◽  
Response To Chemotherapy

: Differentiation of malignant from benign soft tissue tumors is challenging with imaging alone, including that by magnetic resonance imaging and computed tomography. However, the accuracy of this differentiation has increased owing to the development of novel imaging technology. Detailed patient history and physical examination remain essential for differentiation between benign and malignant soft tissue tumors. Moreover, measurement only of tumor size based on Response Evaluation Criteria In Solid Tumors criteria is insufficient for the evaluation of response to chemotherapy or radiotherapy. Change in metabolic activity measured by 18F-fluorodeoxyglucose positron emission tomography or dynamic contrast enhanced-derived quantitative endpoints can more accurately evaluate treatment response compared to change in tumor size. Magnetic resonance imaging can accurately evaluate essential factors in surgical planning such as vascular or bone invasion and “tail sign”. Thus, imaging plays a critical role in the diagnosis and treatment of soft tissue tumors.

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