U.S. doctors online nowAsk doctors free
A 36-year-old member asked:

What areas does colorectal cancer usually affect before metastasis?

2 doctor answers2 doctors weighed in
Dr. Gurmukh Singh
Pathology 49 years experience
Unclear question: Before metastases, colorectal cancer affects the mucosa and wall of large intestine. Tumors on the left side of the colon are more common than on the right side. See this site for more info. http://www.ncbi.nlm.nih.gov/pubmedhealth/pmh0001308/.
Dr. Andrew Turrisi
Radiation Oncology 47 years experience
Invades thru: The bowel muscle, and affects regional lymph nodes.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Free
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership

Similar questions

A 45-year-old member asked:

How is colorectal cancer diagnosed usually?

2 doctor answers3 doctors weighed in
Dr. Gurmukh Singh
Pathology 49 years experience
Colonoscopy, imaging: And biopsy. A lesion may be detected on colonscopy or barium enema or the more recent ct scans. The lesion is biopsied and the tissue examined by a pathologist to make the diagnosis. Colon cancer may be suspected if there is blood in stool, either obvious or occult.
A 46-year-old member asked:

Where does colorectal cancer affect before metastasis?

1 doctor answer1 doctor weighed in
Dr. Myron Arlen
Surgical Oncology 64 years experience
Mesenteric nodes: As colon cancer grows from premalignant cells in the mucosa of bowel it invades the muscularis reaching serosal outer surface (Dukes B). It then invades nodes of the mesentery C1 expanding to 4 or more nodes C2 and then along the mesenteric lymphatics to liver. Subpopulations in the primary however can eventually spread directly to lung or bone depending on their surface antigens.
CA
A 35-year-old member asked:

What ages does colorectal cancer affect?

2 doctor answers7 doctors weighed in
Dr. Jeffrey Crespin
Gastroenterology 28 years experience
It varies: Colon cancer can strike from the 20s and beyond, but is much more common in people in their 50s to 70s hence the recommendations to not routinely do colonoscopies in people before the age of 50. Colon cancer that presents before 60 is often genetic whereas after 60 is more likely due to environmental factors like smoking and red meat.

Related questions

A 39-year-old member asked:
1 doctor answer1 doctor weighed in
A 42-year-old member asked:
2 doctor answers9 doctors weighed in
A 30-year-old member asked:
2 doctor answers3 doctors weighed in
A 32-year-old member asked:
1 doctor answer1 doctor weighed in
A 36-year-old member asked:
3 doctor answers6 doctors weighed in

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Free
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership
Last updated Mar 12, 2020

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.