Lesions of the jaws presenting as radiolucencies on cone-beam CT

MacDonald, David

doi:10.1016/j.crad.2016.05.018

Cited by 49 publications

(28 citation statements)

References 62 publications

(108 reference statements)

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“…They occur twice as often in the mandible as in the maxilla [ 14 ]. When OKCs originate from the mandible, the most common location is the posterior sextant, the angle or the ramus [ 15 , 16 ]. Conversely, the anterior sextant, mainly between canine and lateral incisor, and the third molar region are the most common sites of origin in the maxilla [ 17 , 18 ].…”

Section: Incidence Clinical Presentation and Natural Historymentioning

confidence: 99%

“…The radiographic features of OKCs are not pathognomonic, particularly in smaller unilocular lesions [ 15 ]. When a small unilocular OKC occurs in the anterior sextant of the maxilla, it may simulate other odontogenic and non-odontogenic cysts, such as radicular cyst (Fig.…”

Section: Imaging Techniquesmentioning

confidence: 99%

“…Large mandibular OKCs tend to grow predominantly along the length of the bone with minimal bucco-lingual expansion, especially within the body [ 15 ]. On panoramic radiography, this peculiar pattern of growth may determine an extensive radiolucent lesion with considerable mesiodistal dimensions and without a significant cortical expansion (Figs.…”

Section: Imaging Techniquesmentioning

confidence: 99%

“…The difference between the growth pattern of mandibular and maxillary OKCs may be partly due to the higher cortical thickness of the mandible compared to that of the maxilla [ 15 ]. On CT images, OKCs typically manifest as osteolytic lesions that exhibit a unilocular (Figs.…”

Section: Imaging Techniquesmentioning

confidence: 99%

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Odontogenic keratocyst: imaging features of a benign lesion with an aggressive behaviour

et al. 2018

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The latest (4th) edition of the World Health Organization (WHO) Classification of Head and Neck Tumours, published in January 2017, has reclassified keratocystic odontogenic tumour as odontogenic keratocyst. Therefore, odontogenic keratocysts (OKCs) are now considered benign cysts of odontogenic origin that account for about 10% of all odontogenic cysts. OKCs arise from the dental lamina and are characterised by a cystic space containing desquamated keratin with a uniform lining of parakeratinised squamous epithelium. The reported age distribution of OKCs is considerably wide, with a peak of incidence in the third decade of life and a slight male predominance. OKCs originate in tooth-bearing regions and the mandible is more often affected than the maxilla. In the mandible, the most common location is the posterior sextant, the angle or the ramus. Conversely, the anterior sextant and the third molar region are the most common sites of origin in the maxilla. OKCs are characterised by an aggressive behaviour with a relatively high recurrence rate, particularly when OKCs are associated with syndromes. Multiple OKCs are typically associated with the nevoid basal cell carcinoma syndrome (NBCCS), an autosomal dominant multisystemic disease. Radiological imaging, mainly computed tomography (CT) and, in selected cases, magnetic resonance imaging (MRI), plays an important role in the diagnosis and management of OKCs. Therefore, the main purpose of this pictorial review is to present the imaging appearance of OKCs underlining the specific findings of different imaging modalities and to provide key radiologic features helping the differential diagnoses from other cystic and neoplastic lesions of odontogenic origin.Key Points• Panoramic radiography is helpful in the preliminary assessment of OKCs.• CT is considered the tool of choice in the evaluation of OKCs.• MRI with DWI or DKI can help differentiate OKCs from other odontogenic lesions.• Ameloblastoma, dentigerous and radicular cysts should be considered in the differential diagnosis.• The presence of multiple OKCs is one of the major criteria for the diagnosis of NBCCS.

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Section: Incidence Clinical Presentation and Natural Historymentioning

confidence: 99%

Section: Imaging Techniquesmentioning

confidence: 99%

Section: Imaging Techniquesmentioning

confidence: 99%

Section: Imaging Techniquesmentioning

confidence: 99%

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Odontogenic keratocyst: imaging features of a benign lesion with an aggressive behaviour

et al. 2018

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“…Although such lesions affecting the mandibular alveolus are adequately displayed by the conventional radiography, those in the maxillary alveolus are not readily displayed. Cross-sectional imaging modalities, including cone-beam computed tomography (CBCT), are necessary for lesions arising within the anatomically complex maxilla [6–8]. A recent case report appeared to be the first to compare the merits of the conventional radiography, CBCT, computed tomography (CT), and magnetic resonance imaging (MRI) in the diagnosis of NHL arising within the maxillary alveolus [9].…”

Section: Introductionmentioning

confidence: 99%

Extranodal lymphoma arising within the maxillary alveolus: a systematic review

MacDonald

Lim

2017

Oral Radiol

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ObjectivesExtranodal lymphomas affecting the head and neck infrequently arise within the jaw bones. Although clinical examination and conventional radiography may initially suffice for such lesions arising within the mandible, those arising within the maxillary alveolus generally require cross-sectional imaging because of the complex anatomy of this region. This study was performed to determine the prevalence, demographic characteristics, and clinical presentations of these lesions and the imaging modalities used for their diagnosis.Study designA systematic review (SR) on case series and another SR on case reports were performed to investigate the demographic, clinical, and radiological features of extranodal lymphomas arising within the maxillary alveolus.ResultsMost case series were derived from just four nations, whereas the case reports were derived from a wider range of ethnicities. The more detailed case reports significantly reported at least one imaging modality. Most patients were aware of their lesions for nearly 2 months before presentation. The most frequent symptom was swelling. Most case reports included a provisional diagnosis, the most frequent of which was dental infection followed by squamous cell carcinoma.DiscussionExtranodal lymphomas arising within the maxillary alveolus were sufficiently frequent in four communities to be reported in two or more case series, and the occasional single case report indicated that such lesions are more widespread globally. Although the SR on case series revealed differences in the relative period prevalence and maxillary/mandibular ratio, the SR on case reports revealed details of the clinical presentation and imaging modalities used.

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Basics of radiological diagnosis

MacDonald¹

2019

Oral and Maxillofacial Radiology

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Lesions of the jaws presenting as radiolucencies on cone-beam CT

Cited by 49 publications

References 62 publications

Odontogenic keratocyst: imaging features of a benign lesion with an aggressive behaviour

Odontogenic keratocyst: imaging features of a benign lesion with an aggressive behaviour

Extranodal lymphoma arising within the maxillary alveolus: a systematic review

Basics of radiological diagnosis

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