Okay…
Read a few comments didn’t find the correct answer..
I am a med student myself.
Our Tissues are made of layers of cells…
Each layer with different type of cell …
For Example taking a three layer tissue..
With different cells in all three
Cancer – Uncontrolled Proliferation (multiplication) of cells
Now Cells of any one (or all) can become cancer cells..
And then your disease is classified according to that (i.e Sarcoma, Adenoma etc..where -oma means cancer)
Now further it is classified on the basis if it is confined to that tissue only or it is spreading to other parts of the body (called metastasis then termed as Carcinoma ). Also there is a third category where we check if it is invasive or not , meaning if it invades into blood vessels and/or surrounding tissues.
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