Doctor insights on:
What Is A Tumour
Surrounding cells: All benign tumours tend to remain localized at the site of origin. Most are enclosed by a capsule consisting of fibrous connective tissue derived from the structures in which the lesion is growing and for which the tumor has compressed but not invaded. Well-encapsulated tumors enlarge by a gradual buildup of cells , pushing aside the adjacent tissues without involving them. As such they grow as well-defined masses that displace the normal cells out of the way rather than invading surrounding tissue; ...Read more
"tumor" literally translates as "mass", so even a fresh bruise could be called a "tumor". Doctors use the term "neoplasm" (tranlates literally as new growth) to describe tumors that are abnormal growths of cells. These may be benign or malignant; "malignant" = cancer. In everyday usage, we use "tumor" ...Read more
Subclass: Tumors are groups of cells that have acquired mutations that cause them to divide inappropriately and get the nearby blood vessels and connective tissue to support their growth. Cancers are a subclass of tumors in which the genome itself has become destabilized, allowing the cells eventually to invade and often spread. ...Read more
If both benign and malignant tumours are formed by abnormal cell division, what makes malignant tumours cancerous and benign tumours non-cancerous?
Power to invade: Tumors are in fact caused by the accumulation of a series of genetic mutations. If something is going to be cancer, the mutations destabilize the genome and eventually mutations give the ability of the cells to invade and spread as they do early after conception. The idea that tumors are "cells dividing too rapidly" is fundamentally wrong and confusing -- it's the loss of controls. ...Read more
We don't know: The only known cause for brain tumors is ionizing radiation (atomic bombs, radiation treatment for cancer). A few genetic syndromes raise the risk of brain tumors (neurofibromatosis types 1 ; 2, von hippel-lindau syndrome, li-fraumeni syndrome, turcot syndrome). There's not enough data to show that radiowaves (cellphones) or electromagnetic waves (power lines) cause brain tumors in anyone. ...Read more
Why would tumour markers for colon cancer indicate end of life when one tumour shrunk and another grew slightly. What would cause tumour marker increa?
TUMOR MARKER: Tumor marker for colon cancer had a limited use as far as screening or detecting cancer but if patient had elevated cea the tumor marker before surgery and the level went down after then re-elevated cea could mean recurrent cancer until proven otherwise but id does not mean end of life or it could not be treated only in that special scenario should be taking seriously your surgeon will tell you. ...Read more
Friend wont say what grade brain tumour he has , has bad headache all over the head, sickness, cant sleep, burning up ,what grade could be possibly be?
See your doctor: Grading cancers requires information about how big the tumor is, if there has been spread to other places in the body, and other factors. That being said, the symptoms you describe suggest that other things might be going on; your friend needs to see his oncologist straightaway, to discuss these symptoms and find out whether further tests are needed, or changes in his treatments. ...Read more
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