The CRC medical abbreviation stands for colorectal cancer, cancer that starts in the colon or rectum, the last parts of the digestive tract. As a medical acronym it turns up constantly in primary care reminders, gastroenterology reports and oncology notes.
You will also see CRCS, short for colorectal cancer screening, on wellness visit checklists and quality reports. In research settings the same letters can mean clinical research coordinator, a staff role on study teams. This page covers the medical meaning in detail, the screening tests it is linked to, and how to spot the job title meaning.
At a glance
Stands for
Colorectal cancerRelated form
CRCS, colorectal cancer screeningOther meanings
Clinical research coordinator (study staff)Specialty
Gastroenterology, oncology, primary care, surgeryScreening tests
Colonoscopy, stool tests such as FIT, CT colonographyTumor marker
CEA, used mainly to follow treatment
What the CRC medical abbreviation covers
Colorectal is a blend of colon and rectum, so CRC groups cancers of both sites, which behave similarly and share screening methods. Most colorectal cancers grow slowly from small growths in the bowel lining called polyps. One type, adenomas, can turn into cancer over several years, which is why finding and removing them matters.
Charts may add detail after the abbreviation, such as the location (right colon, sigmoid, rectum), the stage from I to IV, and genetic features of the tumor. When a cancer has spread elsewhere, notes may say metastatic CRC, often shortened further as mCRC.
CRCS medical abbreviation and screening tests
CRCS on a care gap list means the patient is due or overdue for colorectal cancer screening. For many adults at average risk, current US guidance starts screening at about age 45, while people with a family history, inflammatory bowel disease or certain inherited syndromes may start earlier. Your own clinician decides the right timing.
| Test | What it involves |
|---|---|
| Colonoscopy | A camera views the whole colon; polyps can be removed during the test |
| FIT | Fecal immunochemical test, a yearly home stool test for hidden blood |
| FOBT | Older guaiac-based stool test for hidden blood |
| Stool DNA with FIT | Home test looking for blood and abnormal DNA |
| CT colonography | A CT scan that creates images of the colon |
| Flexible sigmoidoscopy | A camera views the lower part of the colon |
A positive stool test or abnormal scan is followed by a colonoscopy.
CRC in real chart lines
Wellness visit note: "52 yo, avg risk, no prior CRCS. Discussed colonoscopy vs FIT; pt prefers FIT. Kit given. FHx: no CRC." FHx means family history, and avg risk means no known factors that would call for earlier or more frequent testing.
Oncology note: "Stage III sigmoid CRC s/p sigmoid colectomy, 2/12 nodes positive. CEA normalized post-op. Plan: adjuvant chemo." Here 2/12 nodes means cancer was found in two of twelve lymph nodes removed, and adjuvant means added after surgery.
Symptoms and terms that appear nearby
Many early colorectal cancers cause no symptoms, which is the reason screening exists. When symptoms do appear, notes may record a change in bowel habits, blood in the stool, belly pain, unexplained weight loss or anemia from slow blood loss, sometimes written IDA for iron deficiency anemia. Bright red blood from the rectum may be written BRBPR.
The broad word cancer is often shortened to CA in notes, so a line may read colon CA instead of CRC.
When CRC means clinical research coordinator
On a hospital research team, a CRC is the person who organizes a clinical trial day to day: screening and enrolling participants, scheduling study visits, collecting data and making sure the protocol is followed. You may see the title on a consent form or a study contact sheet, sometimes with a certification such as CCRC.
The clue is the setting. A consent form, study schedule or staff signature points to the job title, while a pathology report or screening reminder points to colorectal cancer.
Useful questions and more terms
- Which screening test fits my history, and how often is it repeated?
- What happens if a stool test comes back positive?
- Were any polyps removed, and what type were they?
- Does my family history change when I should be checked?
For other diagnosis shorthand, visit the conditions and diagnoses list.
This explanation is for general learning. Screening timing, test choice and any cancer care decisions are personal and should be made with your primary care clinician or gastroenterologist.
Frequently asked questions
What is the CRC acronym in medicine?
The CRC acronym in medical use means colorectal cancer, which is cancer of the colon or rectum. In research settings, the letters can also mean clinical research coordinator.
What does CRCS mean on my chart?
CRCS means colorectal cancer screening. It often appears on preventive care checklists to show whether screening is complete or due.
Is CRC the same as colon cancer?
Colon cancer is part of CRC. The term colorectal cancer covers both colon cancer and rectal cancer, which are often grouped together.
What tests are used for CRC screening?
Common options include colonoscopy, yearly stool tests such as FIT, stool DNA tests, CT colonography and flexible sigmoidoscopy. An abnormal noninvasive test is followed by colonoscopy.
What is mCRC?
mCRC means metastatic colorectal cancer, which is colorectal cancer that has spread to other organs such as the liver or lungs.