Childhood acinic cell carcinoma of the accessory parotid gland: A rare combination

(A) Sagittal T1 weighted image shows oval abnormality (arrow) containing high signal. This signal remained after fat suppression, excluding fat as the etiology. (B) Axial T2 weighted image. The lesion (arrow) shows high signal. (C) Coronal T2 weighted image. The lesion (black arrow) indents the masseter muscle. A small part of residual accessory parotid tissue (small white arrow) is seen at the superior margin of the lesion. Compare with the accessory parotid gland (large white arrow) on the right side.

(A) Low magnification image showing a cystic neoplasm within salivary gland parenchyma. (B) A higher magnification image shows some areas of the tumor to exhibit a papillary architecture. (C) A high magnification image demonstrates tumor cells with delicate basophilic cytoplasm, focal cytoplasmic granules, vacuoles, and microcystic spaces.