Imaging features and atypical signs of symptomatic vertebral haemangioma: a retrospective single-centre analysis of 118 patients

2021 ◽  
Vol 94 (1121) ◽  
pp. 20201250
Author(s):  
Lihua Zhang ◽  
Ben Wang ◽  
Songbo Han ◽  
Shaomin Yang ◽  
Liang Jiang ◽  
...  
Keyword(s):  
Lumbar Spine ◽  
Thoracic Spine ◽  
Compression Fracture ◽  
Imaging Features ◽  
Single Centre ◽  
Vertebral Haemangioma ◽  
Common Location ◽  
Spinal Segments ◽  
Mri Characteristics ◽  
Ct And Mri

Objectives: Symptomatic vertebral haemangioma (SVH) can present with atypical imaging features. Thus, this study analysed the imaging features of SVH using CT and MRI to improve SVH awareness. Methods: We retrospectively analysed CT and MRI characteristics of 118 patients with clinically and pathologically confirmed SVH. Results: Overall, 118 patients were diagnosed with SVH, including 79 females and 39 males (mean age, 45.76 ± 16.36 years). The thoracic spine (n = 86) was the most common location of SVH, followed by the lumbar spine (n = 17). Involvement of multiple spinal segments was observed in 15 patients (12.71%). A total of 101 lesions (85.59%) were centred in the vertebral body, 15 lesions (12.71%) were centred in the posterior attachment, and two lesions (2%) were centred in the paraspinal region. CT showed 39 lesions (33.05%) without a typical honeycomb or polka-dot pattern. Compression fracture was observed in 23 patients (19.49%). Extraosseous extension was present in 111 patients (94.1%), and 17 lesions (14.41%) presented with foraminal extension. Epidural bony compression was observed in 46 patients (38.98%). 20 lesions (16.95%) had atypical T2 weighted MRI signals, and 8 lesions (10.26%) showed atypical enhancement. Conclusion: SVH was predominantly located in the thoracic spine. Involvement of multiple segments, posterior attachment localisation, absence of honeycomb or polka-dot signs, compression fracture, and atypical T2 weighted imaging signals and enhancement were uncommon. Epidural bony compression was not uncommon and has important clinical significance. Advances in knowledge: The imaging features of SVHs are not fully understood. We examined the largest series of SVH cases reported to date.

scholarly journals FEATURES OF THE DIAGNOSIS OF UNCOMPLICATED COMPRESSION FRACTURE OF THE THORACIC SPINE IN CHILDREN

2019 ◽  
Vol 20 (5) ◽  
pp. 307-311
Author(s):  
Yakhya M. Yakhyaev ◽  
M. I. Izrailov ◽  
V. N. Merkulov ◽  
A. M. Aliskandiev ◽  
T. Ya. Yakhyaeva
Keyword(s):  
Thoracic Spine ◽  
Compression Fracture ◽  
Diagnostic Process ◽  
Vertebral Compression Fractures ◽  
Thoracic Vertebrae ◽  
Healthy Children ◽  
X Ray ◽  
Compression Fractures ◽  
Fractures In Children ◽  
Ct And Mri

X-ray diagnostics of compression fractures of bodies of the thoracic vertebrae in children not seldom causes great difficulties due to the fact that even in healthy children vertebrae have a number of features, particularly, the wedge shape. For the purpose of differential diagnosis there was performed chest X-ray examination of the thoracic vertebrae in healthy children and cases after the compression damage. The wedge index and the disk coefficient for various segments of the thoracic spine were calculated. The diagnostic efficiency of radionuclide studies was estimated to reaches 79%. The useof highly informative modern medical techniques (CT and MRI) in the diagnosis of vertebral compression fractures in children allows accurately and timely make the diagnosis and determine the condition of the surrounding tissues. Based on the analysis of medical records, radiographs, identification of options of radionuclide, CT and MRI studies, there was elaborated an algorithm for the diagnosis of compression fractures of vertebrae, which allowed optimize the diagnostic process. There are determined advantages of this algorithm.

CT and MRI characteristics of ossification of the ligamenta flava in the thoracic spine

2001 ◽  
Vol 11 (9) ◽  
pp. 1798-1802 ◽  
Author(s):  
L. Xiong ◽  
Q. Zeng ◽  
J. Jinkins
Keyword(s):  
Thoracic Spine ◽  
Ligamenta Flava ◽  
Mri Characteristics ◽  
Ct And Mri

Primary B cell lymphoma of the sphenoid sinus: CT and MRI characteristics with correlation to perfusion and spectroscopic imaging features

2007 ◽  
Vol 264 (10) ◽  
pp. 1207-1213 ◽  
Author(s):  
Sotirios Bisdas ◽  
Sebastian Fetscher ◽  
Alfred C. Feller ◽  
Mehran Baghi ◽  
Rainald Knecht ◽  
...  
Keyword(s):  
B Cell ◽  
Sphenoid Sinus ◽  
Cell Lymphoma ◽  
Spectroscopic Imaging ◽  
B Cell Lymphoma ◽  
Imaging Features ◽  
Mri Characteristics ◽  
Ct And Mri

Imaging features of primary renal lymphoma

2017 ◽  
Vol 59 (1) ◽  
pp. 114-120 ◽  
Author(s):  
Qingqiang Zhu ◽  
Wenrong Zhu ◽  
Jingtao Wu ◽  
Wenxin Chen
Keyword(s):  
Multislice Computed Tomography ◽  
Low Grade ◽  
Imaging Features ◽  
Mri Imaging ◽  
Abdominal Vessels ◽  
Renal Lymphoma ◽  
Renal Enlargement ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Characteristics ◽  
Ct And Mri

Background Cases of primary renal lymphoma (PRL) are quite rare and are often mistaken for renal cell carcinoma. Purpose To determine the multislice computed tomography (MSCT) and magnetic resonance imaging (MRI) characteristics of PRL. Materials and Methods Twenty-three patients with PRL were identified by CT and MRI, and their tumor characteristics were assessed. Results Tumors exhibited single or multifocal nodules (n = 19) and diffuse renal enlargement (n = 4). Twenty-two tumors exhibited an infiltrative appearance. There was no evidence of calcification in any of the cases. Twenty-one tumors displaced or wrapped around abdominal vessels rather than encasing them. Enlarged retroperitoneal nodes were observed in three cases. Neither extension into the venous system nor distant metastasis was found. Tumor enhancement was of low attenuation compared with that of normal renal cortex and medulla ( P < 0.05). PRL was isointense on T1-weighted imaging, slightly hypointense on T2-weighted imaging and hyperintense on diffusion-weighted imaging. Twenty-two patients exhibited biopsy-confirmed PRN. There were four, 12, and seven cases of low-grade, intermediate-grade, and high-grade tumors, respectively. Patient were followed up over 16 to 166 months. Six patients died within three years and five patients died within five years. Conclusion Infiltrative appearance and tumor displacement or extension around abdominal vessels rather than vessel encasement are common findings on CT or MRI imaging and may suggest a diagnosis of PRL.

scholarly journals Head and neck osteosarcoma: CT and MR imaging features

2020 ◽  
Vol 49 (2) ◽  
pp. 20190202
Author(s):  
Zhendong Luo ◽  
Weiguo Chen ◽  
Xinping Shen ◽  
Genggeng Qin ◽  
Jianxiang Yuan ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Head And Neck ◽  
Giant Cell ◽  
High Signal ◽  
Imaging Features ◽  
Matrix Mineralization ◽  
Imaging Characteristics ◽  
Mri Features ◽  
Signal Intensities ◽  
Ct And Mri

Objective: This study aims to assess the CT and MRI features of head and neck osteosarcoma (HNO). Methods: 37 HNOs were identified, and the following imaging characteristics were reviewed on CT and MRI. Results: A total of 37 patients(age 41.5 ± 15.0 years old; 16 males, 21 females) were included in the study. Tumours occurred in the maxilla (16, 43.2%), mandible (8, 21.6%), skull base (6, 16.2%), calvarium (5, 13.5%), paranasal sinuses (1, 2.7%) and cervical soft tissue (1, 2.7%). 16 patients received radiotherapy for nasopharyngeal carcinoma. Three patients (8.1%) developed osteosarcomas related to a primary bone disease. 16 of the (43.2%) tumours demonstrated lytic density on CT scans, followed by 13 (35.1%) showing mixed density and 7 (18.9%) with sclerotic density. Matrix mineralization was present in 32 (86.5%). 3 out of 24 (12.5%) tumours showed lamellar periosteal reactions, 21 out of 24 (87.5%) showed spiculated periosteal reactions. 12 tumours showed low signal intensities on T1WI, with 16 having heterogeneous signal intensities. 10 tumours showed high signal intensities on T2WI, and 18 showed heterogeneous signal intensities. With contrast-enhanced images, 3 tumours showed homogeneous enhancement (2 osteoblastic and 1 giant cell-rich), 18 tumours showed heterogeneous enhancement (13 osteoblastic, 4 fibroblastic and 1 giant cell-rich), and 7 tumours showed peripheral enhancement (6 chondroblastic and 1 osteoblastic). These tumours were characterized by soft tissue masses with a diameter of 5.6 ± 1.8 cm. Conclusions: HNO is a rare condition and is commonly associated with previous radiation exposure. This study provides age, sex distribution, location, CT and MRI features of HNO.

CT and MRI characteristics of ovarian mature teratoma in patients with anti-N-methyl-D-aspartate receptor encephalitis

2021 ◽  
Author(s):  
Masaya Kawaguchi ◽  
Hiroki Kato ◽  
Yoshifumi Noda ◽  
Natsuko Suzui ◽  
Tatsuhiko Miyazaki ◽  
...  
Keyword(s):  
Mature Teratoma ◽  
Aspartate Receptor ◽  
Mri Characteristics ◽  
Ct And Mri

scholarly journals Cement bridging phenomenon in percutaneous vertebroplasty for adjacent vertebral compression fracture

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yun-Da Li ◽  
Tsung-Ting Tsai ◽  
Chi-Chien Niu ◽  
Po-Liang Lai
Keyword(s):  
Vertebral Compression Fracture ◽  
Body Height ◽  
Compression Fracture ◽  
Plain Film ◽  
Imaging Features ◽  
Height Ratio ◽  
Kyphotic Angle ◽  
Anterior Body ◽  
New Onset

AbstractIn some cases of vertebroplasty for adjacent fractures, we observed a cement bridging phenomenon, in which the injected cement flowed from the newly fractured vertebra to the previously cement-augmented vertebra through the space between the abutting anterior longitudinal ligament and the vertebral column. The purpose of this retrospective study was to investigate this phenomenon. From January 2012 to December 2014, patients who sustained new-onset adjacent vertebral compression fracture and who were again treated with vertebroplasty were enrolled. We divided the patients into two groups, the bridging group and the nonbridging group, to analyze the difference between them. Results showed that the cement bridging phenomenon occurred in 18 (22.8%) of the 79 patients. Significant differences between the bridging and nonbridging groups were identified in the following 3 imaging features: severe loss of the anterior vertebral body height at the new-onset adjacent vertebra on plain film (odds ratio [OR] = 4.46, p = 0.014), fluid accumulation (OR = 36.27, p < 0.001) and hypointense signaling (OR = 15.67, p < 0.001) around the space anterior to the abutting vertebral bodies and the corresponding intervertebral disc on MRI. After a 2-year follow-up, both the mean value of the focal kyphotic angle and anterior body height ratio were significantly better in the cement bridging group than in the nonbridging group. The cement bridging phenomenon, which has never been reported in the literature, is not rare in clinical practice. This phenomenon was associated with better maintenance of focal kyphotic angle and anterior body height ratio during the 2-year follow-up.

Bone-related disorders of the jaw: A clinico-radiological diagnostic algorithm

2021 ◽  
pp. 197140092199896
Author(s):  
Ahmed Abdel Khalek Abdel Razek
Keyword(s):  
Diagnostic Algorithm ◽  
Imaging Features ◽  
Resonance Imaging ◽  
Specific Diagnosis ◽  
Clinical Presentations ◽  
Neoplastic Lesions ◽  
Lesion Extension ◽  
Magnetic Resonance Imaging Mri ◽  
The Relationship ◽  
Ct And Mri

Bone-related disorders of the jaw (BRDJ) include a spectrum of non-neoplastic and neoplastic lesions of the maxillofacial region that have been recently classified into fibro-osseous lesions, giant cell lesions and osseous tumours. The histopathological features of BRDJ can be similar and overlie each other. Imaging is important in order to reach a specific diagnosis. However, the appearance of BRDJ on imaging is non-specific in some cases. Computed tomography (CT) and magnetic resonance imaging (MRI) are used for accurate localisation, characterisation of the tumour matrix, delineation of the lesion extension and establishment of the relation of BRDJ to the surrounding structures. Imaging is usually done to detect the relationship with the adjacent surrounding vital structures and to diagnose aggressive forms, malignant transformation and associated syndromes. The correlation of the demographic findings, the location and the clinical presentations with the imaging features are important for the diagnosis of BRDJ. The proposed clinico-radiological diagnostic algorithm with CT and MRI helps a specific diagnosis to be reached in some cases.

Load-Displacement Characteristics of an Implanted Nuclear Pouch in the Lumbar Spine

1999 ◽  
Author(s):  
Andrew P. Dooris ◽  
Nicole M. Grosland ◽  
Vijay K. Goel ◽  
John S. Drake ◽  
James W. Ahern ◽  
...  
Keyword(s):  
Lumbar Spine ◽  
Nuclear Space ◽  
Patient Exposure ◽  
Active Joint ◽  
Surgical Morbidity ◽  
Bone Chip ◽  
Spinal Segments ◽  
Load Displacement ◽  
Graft Implantation

Abstract Fusion of the spinal segments is typically done to prevent or correct deformity, stabilize the spine after trauma or pathologic destruction, or eliminate painful movement of the spinal segments. Spinal interbody arthrodesis typically requires considerable patient exposure, necessary for discectomy and graft implantation, and resultant morbidity. Some researchers suggest nuclear replacements as active joint mobilizers, while others suggest full disc replacements, and although some biomechanical consideration has been given, results are unclear. We consider here a device which proposes to reduce surgical morbidity while promoting stability by fusion. The device investigated here is a bone-chip pouch, which fills the nuclear space. We present here initial findings of this device in lumbar cadaveric specimens.

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