Referral Follow-Up for Evaluation and/or Biopsy of Suspicious Area/Lesion Letter Sample patient letter for follow-up on referral for evaluation or biopsy of suspicious lesion. This content is available to TDIC policyholders who have online account access. Already registered for an account? Sign in to keep exploring resources. Learn more about online account access. Already a policyholder? Verify your account now to view all resources and benefit from enhanced features. Learn more about online account access.