Cancer and hemorrhoids are completely two different terms. If proper care and treatment is not taken and hemorrhoids get worse then it can turn into gangrene.
Both colorectal and anal cancer have symptoms which may cause them to be mistaken for far more benign diseases, like hemorrhoids.
The biggest difference between the symptoms of hemorrhoids and those of colorectal cancer is that rectal bleeding from colorectal cancer will most likely be dark and/or already hardening while hemorrhoidal bleeding is usually bright red and very fresh.
If you want to know more about the relation between Cancer and Hemorrhoids, you can read:
No they are not. Haemorrhoids: "...swelling and inflammation of veins in the rectum and anus" Source: http://en.wikipedia.org/wiki/Haemorroids
Anal cancer is not uncommon, so the area can become cancerous, but hemorrhoids don't change into cancer.
Bleeding hemorrhoids do not cause cancer. Hemorrhoids do not transform into cancer, either.
Rectal Bleeding can be caused by many things. Possible causes could be anything from Hemorrhoids to Cancer. Rectal Bleeding can even be related to Diahrrea or Food Poisoning.
Rectal examination is performed by means of inserting a gloved, lubricated finger into the rectum and palpating (feeling) for lumps
hemorrhoids
They're called hemorrhoids.
digital rectal exam (DRE). The DRE includes manual examination of the rectum, anus, and the prostate. During this examination, the physician examines the anus and the surrounding skin for hemorrhoids, abscesses, and other irregularities.
These are called Haemorrhoids or they are often referred to as 'piles'
Rectal inflammation can be caused by infection or autoimmune disease. Anal inflammation can be caused by hemorrhoids, infection, and autoimmune disease.
There is a slight increase of risk for rectal cancer in the individual who smokes
Yes, the Mayo Clinic offer information on rectal cancer. You can find the information at mayoclinic.com/health/colon-cancer/DS00035 and http://www.mayoclinic.org/rectal-cancer/
Could happen if caused serious injuries...
Internal rectal burning is often due to internal hemorrhoids. A physician can evaluate internal hemorrhoids and recommend the proper treatment.
The cause of rectal cancer are not all known. However, you should get a rectal exam if you experience unusual tiredness, nasuea, bloody stools, abdominal cramps, and a change in bowel habits. These may be signs of rectal cancer.