The difference between Neoplasm and Tumor
When used as nouns, neoplasm means an abnormal new growth of disorganized tissue in animals or plants, whereas tumor means an abnormal growth.
check bellow for the other definitions of Neoplasm and Tumor
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Neoplasm as a noun (pathology, oncology):
An abnormal new growth of disorganized tissue in animals or plants.
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Tumor as a noun (oncology, pathology):
An abnormal growth; differential diagnosis includes abscess, metaplasia, and neoplasia.