<prompt> Sign suggestive of malignant change in parotid gland tumor-Skin ulcerationIncreasing painFacial palsyAll of the above  <response>: Ans. is d i.e., All of the aboveRed flag features suggesting the possibility of malignancy include:o Facial nerve weaknesso Rapid increase in the size of the lump.o Ulceration or induration or both of the mucosa or skin overlying fixed skino Paraesthesia or anaesthesia of neighbouring sensory nerveso Intermittent pain, increasing relentlessly.o History of previous skin cancer, Sjogrens syndrome or previous radiation to the head and neck. 