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Multidetector computed tomography of temporomandibular joint: A road less travelled

World Journal of Clinical Cases 2015年第5期3卷 442-449页

作者： Shivani Pahwa Ashu Seith Bhalla Ajoy Roychaudhary ongkila bhutia Department of Radiodiagnosis All India Institute of Medical Sciences New Delhi 110029 India Department of Oral and Maxillofacial Surgery Centre for Dental Education and ResearchAll India Institute of Medical Sciences New Delhi 110029 India

This article reviews the imaging anatomy of temporomandibular joint(TMJ), describes the technique of multi-detector computed tomography(MDCT) of the TMJ, and describes in detail various osseous pathologic afflictions affecting the joint. Traumatic injuries affecting the mandibular condyle are most common, followed by joint ankylosis as a sequel to arthritis. The congenital anomalies are less frequent, hemifacial microsomia being the most commonly encountered anomaly involving the TMJ. Neoplastic afflictions of TMJ are distinctly uncommon, osteochondroma being one of the most common lesions. MDCT enables comprehensive evaluation of osseous afflictions of TMJ, and is a valuable tool for surgical planning. Sagittal, coronal and 3D reformatted images well depict osseous TMJ lesions, and their relationship to adjacent structures.

关键词： Temporomandibular joint Temporomandibular joint trauma Congenital anomalies of temporomandibular joint Temporomandibular joint arthritis Multi-detector computed tomography

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Two rare cases of craniofacial chondrosarcoma

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World Journal of Radiology 2012年第6期4卷 283-285页

作者： Pankaj Gupta Ashu Seith Bhalla Venkat Karthikeyan ongkila bhutia Department of Radiodiagnosis All India Institute of Medical Sciences110029 New DelhiIndia Department of Otorhinolaryngology All India Institute of Medical Sciences110029 New DelhiIndia Department of Orthodontics All India Institute of Medical Sciences110029 New DelhiIndia

The craniofacial region is a rare site for *** tumors may have osseous or extraosseous *** chondrosarcomas have the same histological features as osseous *** usually present in the fifth to seventh decades of life,although several cases with younger age at presentation have been *** usually present as a painless mass that gradually progresses to various complaints,such visual impairment,nasal obstruction,and dental *** this article,we present two cases of chondrosarcoma occurring at rather unusual *** is important to keep this rare malignancy in the list of differential diagnoses for a mass in the head and neck region,as these tumors may not always show the features typical of this malignancy.

关键词： Craniofacial chondrosarcoma Extraosseous chondrosarcomas Head and neck chondrosarcomas Head and neck masses Sinonasal chondrosarcoma

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Contrast-enhanced multidetector computed tomography features and histogram analysis can differentiate ameloblastomas from central giant cell granulomas

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World Journal of Radiology 2022年第9期14卷 329-341页

作者： Adarsh Ghosh Meyyappan Lakshmanan Smita Manchanda Ashu Seith Bhalla Prem Kumar ongkila bhutia Asit Ranjan Mridha Department of Radiology Children's Hospital of PhiladelphiaPhiladelphiaPA 19104United States Department of Radiology All India Institute of Medical SciencesNew Delhi 110029India Department of Radiodiagnosis All India Institute of Medical SciencesNew Delhi 110029India Department of Oral&Maxillofacial Surgery All India Institute of Medical SciencesNew Delhi 110029India Department of Pathology All India Institute of Medical SciencesAnsari NagarNew Delhi 110029India

BACKGROUND No qualitative or quantitative analysis of contrast-enhanced computed tomography(CT)images has been reported for the differentiation between ameloblastomas and central giant cell granulomas(CGCGs).AIM To describe differentiating multidetector CT(MDCT)features in CGCGs and ameloblastomas and to compare differences in enhancement of these lesions qualitatively and using histogram *** MDCT of CGCGs and ameloblastomas was retrospectively reviewed to evaluate qualitative imaging *** analysis was used to compare the extent of enhancement of the soft ***’s exact tests and Mann–Whitney U test were used for statistical analysis(P49.05 HU in the tumour providing 100%sensitivity and 85%specificity in identifying a *** A multilocular,lytic sclerotic lesion with significant hyperenhancement in soft tissue,which spares the angle of the mandible and has matrix mineralization,should indicate prospective diagnosis of CGCG.

关键词： Ameloblastoma Granuloma Giant cell Multidetector CT

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