A neoplasm or tumour is a disturbance of growth characterized primarily by an excessive proliferation of cells without apparent relation to the physiological demands of the organ involved. Numerous varieties arise from all types of human tissues and the resulting tumours show marked variations in their biological behaviour. It is thus difficult to devise a simple definition of tumours that will be appropriate for all.
KeywordsSquamous Cell Carcinoma Benign Tumour Basal Cell Carcinoma Transitional Cell Carcinoma Pleomorphic Adenoma
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