[Parotid gland masses: diagnostic value of MR imaging with histopathologic correlations].
OBJECTIVE
The purpose of our study has been to describe the pre-operatively MR Imaging appearance of masses in the parotid gland which may be sources of clinical and radiological confusion.


METHODS
Sixty-eight adults patients with a parotid mass (39 female, 29 male) has been prospectively investigated. T1-weighted, T2-weighted, diffusion-weighted and contrast-enhanced dynamic MR images were performed by using a 1.5 or 1 T MR Imaging unit (Philips Gyroscan Intera 1.5 T. Siemens Expert 1 T). All patients underwent a parotidectomy with histopathologic analysis.


CONCLUSIONS
In case of pleomorphic adenoma (N=30) MR imaging sensibility, specificity and accuracy were respectively 87.5, 80.5 and 83%. In case of Warthin tumors (N=13) the same values were respectively 45.5, 93 and 85%. In case of malignant tumors (N=13) theses values were respectively 71, 89 and 87%. Our routine MR Imaging study appears excellent not only for assessing the type and extent of benign salivary gland tumors and the relationship to adjacent structures, but also for determining whether the tumor is benign or malignant.
Prades
J-M
JM
Laboratoire d'anatomie, faculté de médecine, Saint-Etienne, France. jean.michel.prades@univ-st-etienne.fr
Oletski
A
A
Faye
M-B
MB
Dumollard
J-M
JM
Timoshenko
A-P
AP
Veyret
C
C
Peoc'h
M
M
Martin
C
C
D000235:Adenolymphoma / Q000175:diagnosis / Q000473:pathology; D008949:Adenoma, Pleomorphic / Q000175:diagnosis / Q000473:pathology; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002277:Carcinoma / Q000175:diagnosis / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D010307:Parotid Neoplasms / Q000175:diagnosis* / Q000473:pathology; D010309:Parotitis / Q000175:diagnosis