MCQ
Leukaemia is a cancer caused due to:
- AExcessive production of WBCs
- BExcessive production of RBCs
- CExcessive production of platelets
- DAll of the above
Explanation:
Leukaemia is cancer of blood-forming cells. Leukaemia usually causes large numbers of white blood cells to be made. These abnormal cells usually cannot carry out the normal functions of white blood cells.
They crowd the bone marrow and spill into the blood and may then spread into organs such as the liver, spleen, lungs and kidneys.
Sometimes, they may also spread into the fluid around the brain and spinal cord. Because there are so many abnormal white cells crowded into the bone marrow, the marrow sometimes cannot make enough normal red blood cells, white blood cells and platelets.
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$I.$ The cells of malignant tumours divide erratically.
$II.$ They are malignant tumours of epithelial cells.
$III.$ They are malignant tumours of organs that originate from mesoderm.
$IV.$ These tumours are found in organs such as spleen and lymph nodes.
Which of the above are true for angiosarcoma?