PET Center Name PET Center Address PET Center Phone and Fax Number Patient Name: Policy Number: Date of Service: To Whom It May Concern: (Insert patient name) is a patient of ours. (His/Hers) first PET/CT was performed on (Insert Date), the second on Insert Date),. The second was performed for XRT planning which demonstrates an increase in mass size along with additional lymph nodes with hyper metabolic activity. Without the subsequent PET/CT scan, the patient may have not received the appropriate treatment. Head and neck cancers account for about 3% - 5% of cancers in the adult population of the U.S. Squamous cell carcinomas represent the majority of the head and neck tumors. About 40% of patients with squamous cell head and neck cancers have localized disease. The remaining 60% have advanced disease. FDG PET is very accurate in identifying head and neck primary tumors. FDG PET correctly identified 88% of primary laryngeal tumors and 100% of malignant parotid neoplasms. In another study, PET correctly identified 96% of primary head and neck malignancies – only two small lesions were not identified. PET has a higher sensitivity compared to CT (87% versus 62%) and specificity (89% versus 73%) for staging cancer. PET imaging results can impact patient management in up to 70% of cases by confirming local disease or identifying unsuspected metastases. The presence of metastatic disease can significantly impact on patient management. By providing a whole body survey, FDG PET can detect distant sites of metastatic disease and other primary neoplasms. PET imaging has been shown to be more sensitive and specific than CT for the detection of nodal metastases. The sensitivity of FDG PET imaging for the staging of cervical lymph nodes is between 67% to 91%, and specificity is between 82% to 100%. For lymph node metastases from the mouth, FDG PET has a sensitivity of 75% to 91%, and a specificity of 88% to 96% - this is superior to MRI (36% - 78% and 71% - 94%). Patients with head and neck tumors also have a high incidence of secondary tumors of the aero digestive tract. FDG PET imaging can easily identify other primary neoplasms and result in timely and appropriate treatment. Per the above please re-process procedure code 78815 to pay accordingly. Thank you in advance for your time and consideration in this matter. See attachments regarding various reports/findings on _______________ Sincerely,