Objective:

To explore the value of computed tomography (CT) in diagnosis and differential diagnosis of pleomorphic adenoma (PA) and Warthin tumor (WT).

Methods:

The clinical data and imaging manifestations of 25 cases of PA and 20 cases of WT confirmed by pathology were analyzed retrospectively. All the patients underwent maxillofacial CT unenhanced and dynamic enhanced scans.

Results:

All 25 cases of PA

including 9 males (36.0%) and 16 females (64.0%)

with an average age of (44.113.6) years

were solitary lesions

in which 22 lesions (88.0%) were located in the non-pos

terior inferior quadrant. On enhanced CT

all lesions showed progressive enhancement and mild to moderate enhancement in the venous phase. All 20 cases of WT were males (100.0%)

with an average age of (58.09.2) years

and a long history of smoking. 10 cases (50.0%) were multiple lesions. In total of 35 lesions

25 lesions (71.4%) were located in the posterior inferior quadrant; 35 lesions (100.0%) showed moderate or obvious enhancement in the arterial phase

while the enhancement was decreased in the venous phase

which showed quickly forward and quickly quit.

Conclusion:

Different clinical and CT features have high value in the differential diagnosis of WT and PA

most of lesions can be diagnosed correctly.