<prompt> Which of the following parotid gland tumor shows hot spot on tc99 peechnate scan?adenolymphomaadenoidcystic caacinic cell caAdenocarcinoma  <response>: Ans. is a ie adenolymphoma a scan the salivary glands, especially the parotids; and b assess salivary gland function. All salivary tumours produce a cold spot on 99mTc technetium scan except adenolymphoma Wahins tumour and Oncocytoma. They take up more isotope than the rest of the gland to give a hot spot on scan, so that a definite pre-operative diagnosis can be made without biopsy 