Which term describes an abnormal, new growth that is localized and resembles tissue of origin?

Which term describes an abnormal, new growth that is localized and resembles tissue of origin?

• A. Metastasis
• B. Malignant tumor
• C. Benign tumor
• D. Carcinoma in situ

Answer: (C)

The key idea is how a growth behaves and how similar it looks to the tissue it originates from. A benign tumor is an abnormal new growth that stays localized as a defined mass and, importantly, resembles the original tissue (it is well-differentiated). It does not invade nearby structures or spread to distant parts of the body. That combination—localized growth plus resemblance to the tissue of origin—fits the description. In contrast, a malignant tumor is invasive and can spread (metastasize); carcinoma in situ is confined to the epithelium and has not breached the basement membrane, and metastasis refers to the spread process itself, not a localized growth.

The key idea is how a growth behaves and how similar it looks to the tissue it originates from. A benign tumor is an abnormal new growth that stays localized as a defined mass and, importantly, resembles the original tissue (it is well-differentiated). It does not invade nearby structures or spread to distant parts of the body. That combination—localized growth plus resemblance to the tissue of origin—fits the description. In contrast, a malignant tumor is invasive and can spread (metastasize); carcinoma in situ is confined to the epithelium and has not breached the basement membrane, and metastasis refers to the spread process itself, not a localized growth.