Neoplasia is commonly called a tumor and may be benign or malignant. Which statement best describes its appearance and growth?

• A. Uniform appearance and predictable growth
• B. Non-specific appearance with no pattern
• C. Unique appearance and growth pattern
• D. Never metastasizes

Answer: (C)

Neoplasia reflects uncontrolled, clonal cell growth that produces tumors with a wide range of appearances and growth behaviors. Because tumors arise from different cell types and can be benign or malignant, there isn’t a single uniform look or a single predictable growth pattern. Each neoplasm tends to have distinctive histologic features and growth characteristics that reflect its tissue of origin and biology. Some tumors are well circumscribed and slow-growing, while others are invasive and capable of metastasis, showing variable patterns from one tumor to another. That variability is why the description that best fits is that neoplasms have unique appearance and growth patterns specific to the tumor type. The other statements don’t fit because they imply uniformity or lack of pattern, or deny the metastatic potential seen with malignant neoplasms.