Diagnostic Imaging of Salivary Gland Pathology

Renal Cell Carcinoma: Delayed Metachronous Metastases to Parotid and Cerebellum

“…This is in contrast to the higher grade lesions that display lower signal intensity on T2-weighted images. 27,31,32 Based on the MRI findings and location of the lesion, the possibility of a muscular neoplasm was eliminated, whereas the possibility of a metastatic origin tumor remained in the differential diagnosis. Of note, the patient's most recent (within the past year) laboratory and radiographic surveillances for prostate cancer and RCC were negative.…”

“…26 The T1-weighted MRI signal of WT is typically low signal intensity, whereas the T2-weighted signal is high or heterogeneous. 27,31 The last salivary gland tumor on the differential diagnosis is the mucoepidermoid carcinoma. Mucoepidermoid carcinoma is the most common salivary gland malignancy and more than 50% are found in the parotid gland.…”

“…On T2-weighted images, the lesion will appear characteristically as a high signal intensity mass with a thin low intensity rim. [27][28][29][30][31] WT, or papillary cystadenoma lymphomatosum, is the second most common benign salivary gland lesion. These lesions are typically found in the tail of the parotid and have a 15% incidence of appearing bilaterally.…”