###Human: Is whole body PET scan required to check the spread of tongue cancer? ###Assistant: Hello. Tobacco use in the form of smoking or chewing tobacco and alcohol consumption are the most important risk factors. 1. Complete head and neck examination (mirror examination or fiberoptic examination if required after clinical examination). 2. Dental evaluation. 3. Biopsy of lesion. 4. Routine blood investigation, complete blood count, renal function test, blood sugar, liver function test and electrolyte study (Na+, K+, Cl-) should be performed. 5. Imaging chest x-ray posteroanterior view (PA view), ultrasonogram - USG abdomen and pelvis as routine investigation need to be carried out. 1. Cancer tongue. 2. Chronic inflammation condition (infection). Cancer of the tongue with secondary neck. If the disease involves anterior two-third of the tongue then it can be considered for surgery. Later treatment plan will be decided according to histopathology report.  If the disease involves posterior one-third or base of the tongue then directly plan for concurrent chemoradiotherapy. 1. Stop smoking and avoid alcohol intake. 2. Maintaining oral hygiene is very important. 3. Proper diet and nutrition has to be taken. Revert back after all the investigations to a radiation oncologist online.--->