Assessment of ameloblastomas using MRI and dynamic contrast-enhanced MRI

Asaumi, Junichi; Hisatomi, Miki; Yanagi, Yoshinobu; Matsuzaki, Hidenori; Choi, Yong-Suk; Kawai, Noriko; Konouchi, Hironobu; Kishi, Kanji

doi:10.1016/j.ejrad.2005.01.006

Cited by 44 publications

(33 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Some authors, including us, have previously reported the usefulness of MRI, including dynamic contrast-enhanced MRI (DCE-MRI), for the differential diagnosis of odontogenic tumours. [5][6][7][8][9][10][11][12] However, these previous studies were case reports or comparison studies involving one or a few histopathological types. [5][6][7][8][9][10][11][12] Therefore, the aims of this study were to evaluate the diagnostic value of MRI including DCE-MRI for odontogenic tumours and to establish criteria for their diagnosis.…”

Section: Introductionmentioning

confidence: 98%

Diagnostic value of MRI for odontogenic tumours

Fujita

Matsuzaki²,

Yanagi

et al. 2013

Dentomaxillofacial Radiology

View full text Add to dashboard Cite

Objectives: To evaluate the diagnostic value of MRI for odontogenic tumours. Materials and methods: 51 patients with odontogenic tumours were subjected to preoperative MRI examinations. For tumours with liquid components, i.e. ameloblastomas and keratocystic odontogenic tumours (KCOTs), the signal intensity (SI) uniformity of their cystic components (US) was calculated and then their US values were compared. For tumours with solid components that had been examined using dynamic contrast-enhanced MRI (DCE-MRI), their CI max (maximum contrast index), T max (the time when CI max occurred), CI peak (CI max 3 0.90), T peak (the time when CI peak occurred) and CI 300 (i.e. the CI observed at 300 s after contrast medium injection) values were determined from CI curves. We then classified the odontogenic tumours according to their DCE-MRI parameters. Results: Significant differences between the US values of the ameloblastomas and KCOT were observed on T 1 weighted images, T 2 weighted images and short TI inversion recovery images. Depending on their DCE-MRI parameters, we classified the odontogenic tumours into the following five types: Type A, CI peak . 2.0 and T peak , 200 s; Type B, CI peak , 2.0 and T peak , 200 s; Type C, CI 300 . 2.0 and T max , 600 s; Type D, CI 300 . 2.0 and T max . 600 s; Type E, CI 300 , 2.0 and T max . 600 s. Conclusion: Cystic component SI uniformity was found to be useful for differentiating between ameloblastomas and KCOT. However, the DCE-MRI parameters of odontogenic tumours, except for odontogenic fibromas and odontogenic myxomas, contributed little to their differential diagnosis.

show abstract

Section: Introductionmentioning

confidence: 98%

Diagnostic value of MRI for odontogenic tumours

Fujita

Matsuzaki²,

Yanagi

et al. 2013

Dentomaxillofacial Radiology

View full text Add to dashboard Cite

show abstract

“…Se han descrito formas híbridas en las que un patrón de AC se encuentra circunscrito en el seno de un AD. También existen otras formas híbridas de AC en las cuales se pueden observar intercaladas células basales, mucosas o de estructuras glandulares 4,10,11 .…”

Section: Discussionunclassified

Ameloblastoma desmoplásico

Martínez-Lage

Sánchez-Jáuregui

Parra

et al. 2010

Rev Esp Cirug Oral y Maxilofac

View full text Add to dashboard Cite

“…Ameloblastic carcinoma generally exhibits more aggressive features such as dystrophic calcifications, mixed solid and cystic regions, which have led some authors to recommend MRI as the best imaging modality. 11,12 Although rarely employed, PET-CT has been used in patients with ameloblastoma to demonstrate metastatic disease not reliably identified on other imaging modalities. 13 Two recent articles discuss the use of PET-CT in the diagnosis, characterization and metastatic spread of recurrent ameloblastoma.…”

Section: Discussionmentioning

confidence: 99%

Ameloblastic carcinoma of the mandible with metastasis to the skull and lung: advanced imaging appearance including computed tomography, magnetic resonance imaging and positron emission tomography computed tomography

Devenney-Cakir

Dunfee

Subramaniam

et al. 2010

Dentomaxillofacial Radiology

View full text Add to dashboard Cite

Ameloblastic carcinoma is a very rare malignant odontogenic tumour with characteristic histopathological and clinical features, which requires aggressive surgical treatment and surveillance and, therefore, differs from ameloblastoma. Metastasis typically occurs in the lung. Only one patient with metastasis to the skull has previously been described and no prior case reports have presented MRI and positron emission tomography-CT (PET-CT) imaging findings. We describe a case of ameloblastic carcinoma with metastasis to the skull and lung with emphasis on imaging features including MRI and PET-CT.

show abstract

Assessment of ameloblastomas using MRI and dynamic contrast-enhanced MRI

Cited by 44 publications

References 14 publications

Diagnostic value of MRI for odontogenic tumours

Diagnostic value of MRI for odontogenic tumours

Ameloblastoma desmoplásico

Ameloblastic carcinoma of the mandible with metastasis to the skull and lung: advanced imaging appearance including computed tomography, magnetic resonance imaging and positron emission tomography computed tomography

Contact Info

Product

Resources

About