| JAPANESE JOURNAL OF ORAL & MAXILLOFACIAL SURGERY | |
| Vol. 53 No. 2 2007 | |
| ISSN: 0021-5163 UBIC: 151-J | |
| ABSTRACT | |
| A case of parotid pleomorphic adenoma with marked cystic changes is presented. A 70-year-old woman was referred to our hospital because of a
painless swelling in the left parotid area. Ultrasonography demonstrated a well-demarcated apparently benign lesion in the parotid gland. MM showed high signal
intensities on T1-, T2-, and fat-suppressed T1-weighted images. Under a tentative diagnosis of parotid cyst, the lesion was excised with the patient under general anesthesia.
The excised material was a cystic lesion with focal thickening of the wall. Pathological examination showed that a large cyst had formed in the tumor parenchyma of
a pleomorphic adenoma. There has been no evidence of recurrence as of 5 years 3 months after the operation.
Key words: pleomorphic adenoma, parotid gland, cystic change. |
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