Morphologie IRM des tuméfactions de la glande parotide. Corrélations histopathologiques

Prades, Jean-Michel; Oletski, A.; Faye, Mohameth; Dumollard, Jean Marc; Timoshenko, Andrei P.; Veyret, C; Péoc’h, Michel; Martin, Clémence

doi:10.1016/j.morpho.2007.05.003

Cited by 23 publications

(6 citation statements)

References 16 publications

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“…Similar results were demonstrated in a study by Prades et al , which reported the diagnostic accuracy of MRI at 83%. The findings of these studies imply that the MRI seems to have reached its limitation in this application (35). In a study by Kan et al , positron emission tomography (PET) was evaluated for the differential diagnosis of malignant head and neck tumors from benign lesions.…”

Section: Discussionmentioning

confidence: 91%

Salivary gland tumors: A 20-year review of clinical diagnostic accuracy at a single center

et al. 2013

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Obtaining reliable pre-operative diagnosis is crucial in planning treatment for patients with salivary gland tumors. The purpose of this study was to evaluate the accuracy of pre-operative clinical diagnosis of salivary gland tumors managed at a single tertiary university hospital over a period of 20 years. A retrospective analysis of the period between 1992 and 2011 was carried out to review the cases of patients with salivary gland tumors. A total of 101 patients were enrolled and general data were described. Clinical diagnosis was compared with the final pathological diagnosis to reveal the clinical diagnostic accuracy. Of the parotid and submandibular gland tumors, 86 and 67% were benign, respectively. The clinical diagnostic accuracies for diagnosis of parotid tumors as benign or malignant were 100 and 57%, respectively. The clinical diagnostic accuracies for diagnosis of submandibular tumors as benign or malignant were 67%. Therefore, the overall clinical judgment of benign and malignant tumors in the submandibular gland is unreliable. The accuracy for a parotid tumor to be clinically interpreted as benign was 100%. While it is difficult to draw any conclusion for non-parotid gland tumors, surgical intervention should be recommended in patients with parotid tumors clinically suspected to be malignant, and all submandibular, sublingual and minor salivary gland tumors.

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Section: Discussionmentioning

confidence: 91%

Salivary gland tumors: A 20-year review of clinical diagnostic accuracy at a single center

et al. 2013

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“…Ikeda et al 7 revealed that average ADC values of Warthin’s tumor was significantly lower than all included malignant lesions. Prades et al 15 concluded that morphologic appearances of tumors were very promising for determining whether the tumor is benign or malignant and combining of DWI-ADC map with those morphologic features non-invasively might improve the results. They predicted 83% sensitivity for detecting pleomorhic adenomas and 85% sensitivity for Warthin’s tumor via combined use of ADC values and morphologic factors.…”

Section: Discussionmentioning

confidence: 99%

Diffusion weighted magnetic resonance imaging in the diagnosis of parotid masses. Preliminary results

Yologlu

Aydın

Alp

et al. 2016

SMJ

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ObjectiveTo demonstrate the diagnostic potentials of MRI, diffusion weighted imaging (DWI), and apparent diffusion coefficient (ADC) mapping in the detection of parotid masses correlated to the histopathological results.MethodsStudy design was retrospective. Fifteen patients with parotid gland masses were included as the study group and contralateral normal parotis glands of same patients were taken as the control group. Patients with bilateral parotid gland tumors were excluded, 7 right-sided and 8 left-sided parotid masses were included in the research. The study took place at the Department of Radiology, Ankara, Turkey, between May 2012 and September 2014.ResultsApparent diffusion coefficient measurements of 15 parotis tumors in 1000 and 750 sec/mm2 b-values with comparison to the contralateral normal gland parenchyma were demonstrated. Neurofibromas was predicted as the highest, and lipomas as the lowest ADC values. Pleomorphic adenomas, Warthin’s tumor, and normal parotid parenchyma indicate significant statistical differences from each other on the basis of mean ADC values (p<0.05).ConclusionThe DWI and ADC mapping of parotis gland could aid in the differential diagnosis of benign and malignant masses.

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“…La tomodensitométrie apporte une aide précieuse au diagnostic, en montrant une masse parotidienne homogène, bien encapsulée, de densité négative entre -50 et -100 unités Hounsfield [8]. L'imagerie par résonance magnétique est actuellement l'examen de choix dans l'exploration de la pathologie tumorale des glandes parotides avec une plus grande sensibilité et spécificité comparativement au scanner, elle donne une localisation précise de la tumeur et oriente sur sa nature sans toutefois remplacer un diagnostic histologique que seule la chirurgie apportera [9]. Vu que notre patient n'a pas accepté la chirurgie, on a retenu le diagnostic sur les critères sémiologiques typiques en IRM, sans avoir recours aux données histologiques.…”

Section: Discussionunclassified

“…Le diagnostic préopératoire peut parfois aider par ponction-biopsie percutanée à l'aiguille fine. Mais, rarement réalisée car elle présente un taux élevé de faux négatifs et souvent l'interprétation des fragments prélevés est délicate [9]. Le traitement de ces lipomes reste chirurgical, ce qui n'est pas toutefois consensuel [1].…”

Section: Discussionunclassified

“…Le traitement de ces lipomes reste chirurgical, ce qui n'est pas toutefois consensuel [1]. Plusieurs techniques sont discutées dans la littérature, entre autre la parotidectomie totale, avec conservation du nerf parotidien, l'énucléation ou la tumorectomie avec une marge de tissu sain [5, 9]. Le taux de récidive des lipomes intra-parotidiens après chirurgie est de l'ordre de 5% [2].…”

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Une localisation rare du lipome au niveau parotidien: à propos d'un cas

et al. 2018

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La localisation des lipomes au niveau parotidien est très rare. Nous rapportons un nouveau cas avec une revue de littérature concernant un patient de 55 ans, qui a consulté pour une masse au niveau de la région parotidienne évoluant depuis quatre ans. À la palpation nous avons trouvé une formation de consistance molle, mobile et indolore. Le patient a bénéficié par la suite d'une imagerie (échographie et IRM), d'où le diagnostic final d'un lipome parotidien a été retenu ; le traitement était conservateur sur le choix du patient.

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Morphologie IRM des tuméfactions de la glande parotide. Corrélations histopathologiques

Cited by 23 publications

References 16 publications

Salivary gland tumors: A 20-year review of clinical diagnostic accuracy at a single center

Salivary gland tumors: A 20-year review of clinical diagnostic accuracy at a single center

Diffusion weighted magnetic resonance imaging in the diagnosis of parotid masses. Preliminary results

Une localisation rare du lipome au niveau parotidien: à propos d'un cas

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