Stool Sample Collection Study
The primary objective of this study is to obtain de-identified stool specimens from participants with colonoscopic biopsy-based histopathologic diagnosis of colorectal cancer (CRC) and/or a ≥1 cm colorectal polyp/adenoma/mass found during pre-enrollment colonoscopy that is of sufficient size to require surgical excision or complex colonoscopic polypectomy.

The samples will be used for the purpose of research and development of a new molecular diagnostic test for the detection of neoplasms of the aerodigestive tract.
- EligibilityCriteria: Inclusion Criteria:  Participant is a person ≥18 years of age. Participant has a diagnosis of CRC, at any stage, or ≥1 cm colorectal polyp/adenoma/mass found during pre-enrollment colonoscopy that is of sufficient size to require surgical excision or complex colonoscopic polypectomy. Participant understands the study procedures and can provide informed consent to participate in the study and authorization for release of relevant protected health information to the study Investigator.  Exclusion Criteria:  Participant has actively bleeding hemorrhoids. Participant has active synchronous extra-colonic aerodigestive tract cancers (e.g., lung, esophagus, stomach, or pancreatic cancer). Participant has a prior history of extra-colonic aerodigestive tract malignancy within the past 5 years. Participant has a history of any inflammatory bowel disease. Participant has familial adenomatous polyposis, hereditary non-polyposis colorectal cancer (Lynch) syndrome, or other hereditary cancer syndromes. Participant has benign (non-pre-cancerous) polyps such as inflammatory polyps or hamartoma polyps.  Individual has a condition the Investigator believes would interfere with their ability to provide informed consent, comply with the study protocol, which might confound the interpretation of the study results or put the person at undue risk.  - - HealthyVolunteers: No - Gender: All - MinimumAge: 18 Years - StdAgeList: Adult, Older Adult - StudyPopulation: Men and women 18 years or greater with a diagnosis of CRC, at any stage, or ≥1 cm colorectal polyp/adenoma/mass found during pre-enrollment colonoscopy that is of sufficient size to require surgical excision or complex colonoscopic polypectomy. - SamplingMethod: Probability Sample