Diagnostic Approach to Retromolar Trigone Cancer by Multiplanar Computed Tomography Reconstructions

2014 ◽  
Vol 65 (4) ◽  
pp. 335-344 ◽  
Author(s):  
Silvio Mazziotti ◽  
Ignazio Pandolfo ◽  
Tommaso D'Angelo ◽  
Achille Mileto ◽  
Carmela Visalli ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Multidetector Computed Tomography ◽  
Clinical Examination ◽  
Soft Palate ◽  
Systematic Approach ◽  
Parapharyngeal Space ◽  
Tonsillar Fossa ◽  
Floor Of The Mouth ◽  
Multiplanar Reconstructions ◽  
Retromolar Trigone

Neoplasms of retromolar trigone have important peculiarities due to their spatial relationships with the surrounding structures. Tumours that involve this area can extend to nearby muscles; adipose spaces; and other anatomic structures, such as the soft palate, the tonsillar fossa, the parapharyngeal space, and the floor of the mouth. In spite of a relatively quick diagnosis, the real extent of these tumours is typically underestimated at clinical examination. Our purpose was to propose a systematic approach to the use of multiplanar computed tomography reconstructions to evaluate normal retromolar trigone anatomy and the main pathways of spread for tumours that arise in this area. To our knowledge, only few reports exist in literature about this topic and none are about the usefulness of multidetector computed tomography and multiplanar reconstructions.

scholarly journals Role of multidetector computed tomography in evaluation of retroperitoneal masses

2018 ◽  
Vol 6 (12) ◽  
pp. 3949
Author(s):  
Diksha Chinwan ◽  
Poonam Vohra
Keyword(s):  
Computed Tomography ◽  
Multidetector Computed Tomography ◽  
Imaging Modality ◽  
Plain Radiograph ◽  
Imaging Modalities ◽  
Cross Sectional ◽  
Multiplanar Reconstructions ◽  
Abdominal Masses ◽  
Mixed Pattern ◽  
The Masses

Background: Diagnostic imaging plays an important role in the evaluation of abdominal masses. Many imaging modalities are available ranging from conventional modalities to the cross-sectional modalities like USG, CT and MRI. The main principles of imaging are to determine the origin of mass, its measurement, extent, characterisation and assessment of its effect on contiguous organs. In the past, the mainstay was conventional imaging modalities like plain radiograph, Gastrointestinal contrast studies and I.V.U. Modern imaging modalities allow an early and accurate pre-operative diagnosis resulting in a higher rate of surgical resection and improvement of survival.Methods: A Cross-sectional observational study was done in 30 patients. Patients of either sex of any age group who had presented with involvement of retroperitoneal organs detected by routine ultrasound and postoperative patients with recurrence were included in our study.Results: Ultrasound is the initial imaging modality of choice since it is inexpensive, easy to perform and no radiation exposure. On USG, the retroperitoneal masses are classified as solid or cystic or mixed. Since most of the retroperitoneal masses have hetroechoic/mixed pattern, they cannot be characterized by ultrasound alone and hence need further evaluation.Conclusions: Multidetector computed tomography is the imaging modality of choice for further evaluation and characterization. CT protocol for evaluation of the retroperitoneum consisted of both non-enhanced and contrast-enhanced scans for localisation and characterisation of the masses. Multiplanar reconstructions allowed the images to be viewed in any plane chosen including a curved plane thus helping in defining the exact location and extent of the lesion. With MIP and volume rendered images, the relationship of the vessels with the mass lesions was clearly visualized.

Analysis of Hepatic Capsular Enhancement Mimicking the Fitz-Hugh-Curtis Syndrome on a Multidetector Computed Tomography

2008 ◽  
Vol 58 (3) ◽  
pp. 277
Author(s):  
Ji Sang Park ◽  
Seong Jin Park ◽  
Hae Kyung Lee ◽  
Boem Ha Yi ◽  
Hyun Sook Hong ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Multidetector Computed Tomography ◽  
Fitz Hugh Curtis Syndrome

Noninvasive Evaluation of Coronary Artery Bypass Grafts with 16-Slice Multidetector Computed Tomography

2012 ◽  
Vol 15 (1) ◽  
pp. 12 ◽  
Author(s):  
Levent Sahiner ◽  
Ali Oto ◽  
Kudret Aytemir ◽  
Tuncay Hazirolan ◽  
Musturay Karcaaltincaba ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Coronary Artery ◽  
Diagnostic Accuracy ◽  
Multidetector Computed Tomography ◽  
Coronary Artery Bypass ◽  
Predictive Value ◽  
Artery Bypass ◽  
Time Interval ◽  
Mdct Angiography ◽  
Sensitivity Specificity

<p><b>Background:</b> The aim of this study was to investigate the diagnostic accuracy of 16-slice multislice, multidetector computed tomography (MDCT) angiography for the evaluation of grafts in patients with coronary artery bypass grafting (CABG).</p><p><b>Methods:</b> Fifty-eight consecutive patients with CABG who underwent both MDCT and conventional invasive coronary angiography were included. The median time interval between the 2 procedures was 10 days (range, 1-32 days). The sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of MDCT for the detection of occluded grafts were calculated. The accuracy of MDCT angiography for detecting significant stenoses in patent grafts and the evaluability of proximal and distal anastomoses were also investigated.</p><p><b>Results:</b> Optimal diagnostic images could not be obtained for only 3 (2%) of 153 grafts. Evaluation of the remaining 150 grafts revealed values for sensitivity, specificity, PPV, NPV, and diagnostic accuracy of the MDCT angiography procedure for the diagnosis of occluded grafts of 87%, 97%, 94%, 93%, and 92%, respectively. All of the proximal anastomoses were optimally visualized. In 4 (8%) of 50 patent arterial grafts, however, the distal anastomotic region could not be evaluated because of motion and surgical-clip artifacts. The accuracy of MDCT angiography for the detection of significant stenotic lesions was relatively low (the sensitivity, specificity, PPV, and NPV were 67%, 98%, 50%, and 99%, respectively). The number of significant lesions was insufficient to reach a reliable conclusion, however.</p><p><b>Conclusion:</b> Our study showed that MDCT angiography with 16-slice systems has acceptable diagnostic performance for the evaluation of coronary artery bypass graft patency.</p>

Coronary Artery Fistula Detected by 64-Slice Multidetector Computed Tomography: Case Report

2010 ◽  
Vol 13 (3) ◽  
pp. E198-E199
Author(s):  
Yi-Chang Lin ◽  
Yi-Ting Tsai ◽  
Chih-Yuan Lin ◽  
Chung-Yi Lee ◽  
Gou-Jieng Hong ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Case Report ◽  
Coronary Artery ◽  
Multidetector Computed Tomography ◽  
Coronary Artery Fistula
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