Will a colonoscopy detect anal cancer/mass as well colon cancer? Is the digital exam done before the colonoscopy is performed?

Not able to detect. Several instruments are used for examining the rectum and then colon. The anal canal is examined with an anoscope being several inches long. confirmation is by digital exam. The proctoscope looks at the rectum above the anus after which sigmoidoscopes were used but now replaced by the colonoscope for examining upper rectum to cecum. Lesion found are then bx.
Yes and Yes. A colonoscopy would detect anal, rectal, colon cancer. Typically a rectal/digital exam is done first.

Related Questions

Are anal cancer and colon cancer the same?

No. Colon cancer is generally an adenocarcinoma of the lining of the large intestine, usually treated with surgery and sometimes chemotherapy. Anal cancers can be different types (squamous, etc.), treated differently, often without surgery and using chemotherapy and radiation therapy instead. Read more...

How are anal cancer and colon cancer different?

See below. Anus is about 3-4 cm long from skin to the rectum which is the last part of colon. Colon is lined by columnar lining and cancer of this is very common and runs in families. Cancer arising in the anal skin which is squamous kind is more like skin cancer. Treatment is very different as is prognosis. Read more...

What is the difference between having anal cancer and colon cancer?

Location. An anal cancer may likely be a different cell type, located more near the skin of the anal opening. It may be treated differently with radiation and chemotherapy rather than surgery, depending on the cell type. Colon caner can be located anywhere in the large intestine, and is treated wth surgery to remove the tumor, and sometimes radiation or chemotherapy may be used after surgery. Read more...
Everything. Although both colon and anus are part of gastrointestinal tract and anus is a continuum of rectum and colon - anal cancer is completely different to colon cancer. They arise from different type of cells ( squamous vs adenocarcinoma) , they have different way of spreading, different risk factors, different therapy, prognosis etc. They are different in almost everything actually. Read more...

Please help! What is the difference between colon cancer and anal cancer?

Each is dIfferent. Colon cancer is in the colorectal area , adenocarcinoma spreads to abdominal lymph nodes first and more common than anal cancer , develops in anal canal squamous cell cancer , spreads to groin nodes first. Recently more frequently seen in HIV patients. Read more...