Final answer:
In situ describes a malignant growth at the site of origin without invading surrounding tissues.
Explanation:
In situ describes a malignant growth confined to the site of origin without invading surrounding tissues. This term is used when the tumor has not spread to other areas of the body.
For example, carcinoma in situ is a type of cancer where abnormal cells are found only in the original location without invading nearby tissues.
Metastasis, on the other hand, refers to the spread of cancer cells to other parts of the body, leading to secondary tumor formation.
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