Question

Compare the structures of benign and malignant neoplasms.

a) Benign tumors have well-defined borders; malignant tumors invade surrounding tissues
b) Benign tumors are slow-growing; malignant tumors are fast-growing and metastasize
c) Benign tumors are composed of well-differentiated cells; malignant tumors are composed of poorly differentiated cells
d) All of the above

Answer 1

Benign tumors have well-defined borders and are slow-growing with well-differentiated cells, while malignant tumors are invasive, fast-growing, poorly differentiated, and can metastasize. The correct answer is: d) All of the above.

Step-by-step explanation:

Comparison of Benign and Malignant Neoplasms

Benign and malignant neoplasms differ significantly in their structure and behavior. Benign tumors often have well-defined borders, grow slowly, and are composed of well-differentiated cells that closely resemble their tissue of origin. In contrast, malignant tumors are characterized by their ability to invade surrounding tissues due to poorly defined borders, their rapid and aggressive growth, and the composition of poorly differentiated cells. Additionally, malignant tumors can metastasize, meaning they can spread to other parts of the body and form new tumors. Therefore, the correct answer to the question is:

d) All of the above