Wahins tumour is

Wahin's tumor, or papillary cystadenoma lymphomatosum, is the second most common benign parotid tumor and occurs most often in older white men. Because of the high mitochondrial content within oncocytes, the oncocyte-rich Wahin tumor and oncocytomas will incorporate technetium Tc 99m and appear as hot spots on radionuclide scans. If fine-needle aspiration suggests a slow-growing Wahin tumor with confirmatory technetium scanning in a patient with contraindications to surgery, the tumor may be closely monitored because it has no malignant potential.