Fractures of the C1 and C2 Vertebrae

Kalantar, S. Babak

doi:10.1053/j.semss.2012.07.002

Cited by 15 publications

(29 citation statements)

References 63 publications

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“…Cervical spine fractures can be classified based on their anatomical location (anterior and posterior column), mechanism of injury (hyperflexion/rotation, hyperextension/ rotation, axial compression, lateral flexion, others) and degree of mechanical instability (e.g., odontoid fracture, Hangman fracture, Jefferson fracture, fracture with anterior subluxation, fracture with unilateral and bilateral facetal dislocation, vertebral body burst fracture) (6,(9)(10)(11). Assessment of cervical spine injuries plays a major role in evaluation of trauma patients.…”

Section: Main Pointsmentioning

confidence: 99%

Effectiveness of second-opinion radiology consultations to reassess the cervical spine CT scans: a study on trauma patients referred to a tertiary-care hospital

Khalilzadeh

Rahimian²,

Batchu³

et al. 2015

Diagn Interv Radiol

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M agnetic resonance imaging (MRI) is a widely used diagnostic tool for breast imaging in daily practice, with its high sensitivity to detect primary, recurrent, and residual breast cancer. Breast MRI serves as a reliable problem-solving tool in case of inconclusive mammography and ultrasonography (US) findings. It can be used to monitor the results of neoadjuvant chemotherapy and it may also contribute to preoperative evaluation of known lesions. With increasing use of MRI, number of breast lesions visible only on MRI and need for MRI-guided breast biopsy have increased (1). Second-look US can also be used for re-evaluation of these lesions; because US-guided biopsy is an easier, cheaper, and faster method if these lesions are visible on second-look US. According to a recently published meta-analysis, lesion detection rates with second-look US are variable in the literature (22.6%-82.1%). Mass lesions and malignant lesions were more likely to be detected at second-look US; average detection rates were 66% for masses, 29% for non-mass-like enhancement (NME) (2, 3). However, focal or NME lesions, which are less detectable than masses on second-look US, require MRI-guided biopsy in the majority of cases. According to the MRI-guided biopsy series in the literature, approximately 25%-35% of these lesions are diagnosed as malignant (4-9).Within this context, the aim of the present study is to assess the effectiveness of MRI-guided 10 Gauge (G) vacuum-assisted breast biopsies (VABB) performed at our institution and to examine the relationship between lesion characteristics and histopathologic results. B R E A S T I MAG I N G O R I G I N A L A R T I C L E PURPOSEWe aimed to assess the effectiveness of magnetic resonance imaging (MRI)-guided vacuum-assisted breast biopsy (VABB), evaluate and compare the characteristics and histopathologic findings of lesions, and overview the follow-up results of benign lesions. METHODSMRI findings and histopathologic results of breast lesions biopsied by MRI-guided VABB between 2013 and 2016 were retrospectively analyzed. MRI findings closely related with malignancy were investigated in particular. Follow-up results of benign lesions were evaluated. RESULTSMRI-guided VABB was applied to 116 lesions of 112 women. Of the lesions, 75 (65%) were benign, while 41 (35%) were malignant. Segmental (94%), clustered (89%), and clustered ring (67%) nonmass-like enhancement patterns were found to be more related with malignancy. False-negative rate of MRI-guided VABB was 12%, underestimation rate was 21%. One of the 54 followed-up benign lesions had a malignant result. CONCLUSION MRI-guided VABB is a reliable method for the diagnosis of breast lesions that are positive only on MRI. Follow-up results show that cancer detection rate is low for radio-pathologically concordant lesions. Further multicenter studies with larger patient population are needed to elucidate these results.You may cite this article as: Taşkın F, Soyder A, Tanyeri A, Öztürk VS, Ünsal A. Lesion characteristics, histopathologic r...

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Section: Main Pointsmentioning

confidence: 99%

Effectiveness of second-opinion radiology consultations to reassess the cervical spine CT scans: a study on trauma patients referred to a tertiary-care hospital

Khalilzadeh

Rahimian²,

Batchu³

et al. 2015

Diagn Interv Radiol

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“…Without intervertebral disc between the atlas and the axis, the stability of atlantoaxial complex relies solely on the atlantoaxial joint and the transverse ligament [2, 3]. Any injury of structure above may cause atlantoaxial instability [4].…”

Section: Introductionmentioning

confidence: 99%

Gallie technique versus atlantoaxial screw-rod constructs in the treatment of atlantoaxial sagittal instability: a retrospective study of 49 patients

et al. 2017

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BackgroundThe objectives of this study are to investigate the clinical curative effect of Gallie technique and atlantoaxial screw-rod constructs (SRC) on atlantoaxial sagittal instability and determine the indication of Gallie technique.MethodsData of 49 patients with atlantoaxial sagittal instability from February 2008 to May 2015 were analyzed retrospectively. The visual analog scale (VAS) score and the neck disability index (NDI) were used to evaluate the curative effect. Postoperative radiological outcomes were used to evaluate the stability of atlantoaxial joint and bone fusion. Perioperative parameters such as blood loss, operation time, radiographic exposure times, and hospital expense were also recorded and analyzed.ResultsForty-nine patients (36 men and 13 women) were included in this study. The mean age was 41.4 ± 8.9 (range from 19 to 64). All patients were followed up for 24–67 months. Among these patients, 25 of these patients underwent Gallie surgery and 24 underwent SRC surgery. The pain in the occipitocervical area of all the patients has been relieved. NDI scores and VAS scores were lower in Gallie group than in SRC group in early postoperative period. The proportion of the patients who achieved good bone fusion within 3 months after operation was 88.0% (22/25) in the Gallie group and 100% (24/24) in the SRC group. The Gallie group is lower than the SRC group in blood loss, operation time, radiographic exposure times, and hospital expense. Statistical difference was observed between the two groups.ConclusionsFor patients with atlantoaxial instability who has (1) the atlantodental interval (ADI) which is bigger than 5 mm on lateral flexion-extension X-ray, or Anderson-D’Alonzo type II odontoid fracture, (2) no asymmetry between odontoid process and lateral mass on open-mouth anterior-posterior X-ray, and (3) no dislocation of lateral mass joint on the CT 3D reconstruction, Gallie technique can be chosen as a safe and effective method if atlantoaxial reduction can be achieved preoperatively. Compared with SRC, Gallie technique can relieve the pain in the occipitocervical area earlier and it can shorten operation time and reduce intraoperative bleeding, radiographic exposure times, and hospital expense effectively. However, for patients with irreducible atlantoaxial dislocation, the Gallie technique should be used with caution.

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“…Devido à especificidade anatômica e funcional do complexo Atlas-Axis-Occipito, não raro essa região é um local de ocorrência de fraturas, principalmente em crianças e adultos com mais de 60 anos. De modo que lesões no complexo atlas-axis somam mais de 70% de todos os traumas cervicais em pacientes com mais de 60 anos, bem como 57% dessas lesões ocorrem no dente do áxis (processo odontóide), sendo esses traumas, geralmente, de baixa energia cinética (Kalantar, 2013 (Ansari et al, 2015) no lado direito, e de 6,90 mm (Lalit et al, 2015) a 6,97 mm (Ansari et al, 2015) no esquerdo. Já o diâmetro transverso médio do FT variou de 5,17 mm (Lalit et al, 2015) a 5,91 mm (Ansari et al, 2015) no lado direito, e de 5,40 mm (Lalit et al, 2015) a 5,53 mm (Ansari et al, 2015) no lado esquerdo.…”

Section: A Birrefringência Das Fibras Colagenasunclassified

Estudo Das Variações Anatômicas Do Nervo Isquiático E Sua Relação Com O Músculo Pirifome Em Universidades Públicas Do Estado Do Amazonas

Costa¹,

Pascual²,

Alves³

et al. 2019

O Estudo De Anatomia Simples E Dinâmico 2

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Fractures of the C1 and C2 Vertebrae

Cited by 15 publications

References 63 publications

Effectiveness of second-opinion radiology consultations to reassess the cervical spine CT scans: a study on trauma patients referred to a tertiary-care hospital

Effectiveness of second-opinion radiology consultations to reassess the cervical spine CT scans: a study on trauma patients referred to a tertiary-care hospital

Gallie technique versus atlantoaxial screw-rod constructs in the treatment of atlantoaxial sagittal instability: a retrospective study of 49 patients

Estudo Das Variações Anatômicas Do Nervo Isquiático E Sua Relação Com O Músculo Pirifome Em Universidades Públicas Do Estado Do Amazonas

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