Collecting Blood and Stool Samples to Detect Colorectal Cancer or Advanced Neoplasia in Lynch Syndrome Patients

Patient has known cancer (stage I-IV) within 5 years prior to current sample collection (not including basal cell or squamous cell skin cancers; if patient has not been seen or if information is not available, the patient is eligible)

Patient has received chemotherapy class drugs for the treatment of cancer in the 5 years prior to current sample collection

Patient has had any abdominal radiation therapy prior to current sample collection

Patient had therapy to the target (non-hyperplastic) lesion with intent to completely remove or debulk the lesion prior to sample collection [examples include snare polypectomy, endoscopic mucosal resection (EMR), endoscopic submucosal dissection (ESD), surgical resection, trans anal excision]