tumour

n. abnormal swelling in any part of the body, growth, lump (alternate spelling for tumor)

Tumor or tumour (via Old French tumour from Latin tumor "swelling") is an abnormal growth or mass of tissue. A tumor can be either malignant or benign. Nearly all tumors are examples of neoplasia, although certain developmental malformations or inflammatory masses may occasionally be referred to as tumors.
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Noun
1. an abnormal new mass of tissue that serves no purpose
(synonym) tumor, neoplasm
(hypernym) growth
(hyponym) acanthoma, skin tumor

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In certain types of leukaemia where the rate of cell division is very fast (e.g. B-cell and T-cell ALL), patients may develop a 'tumour lysis' syndrome when chemotherapy is given. This is characterized by hypercalcaemia and a high serum levels of phosphate and potassium, resulting from a high rate of cellular breakdown. This is a potentially life-threatening situation and defficult to treat once it has happened. It can usually be prevented by making sure that chemotherapy is not started until the uric acid level is normal. Intravenous fluids needs to be to be given before starting chemotherapy and relevant biochemical parameters monitored at regular intervals. Patients may require haemodialysis to correct severe metabolic imbalance.

tumour /'tju:mə/ (tumour) /'tju:mə/
danh từ khối u, u, bướumalignant tumor: u ác tính
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