Mamography for breast cancer is an example of which of the following?
**Core Concept**
Radiological imaging for cancer detection and diagnosis is an essential aspect of modern medicine. Mammography, specifically, is a breast-imaging modality that employs low-energy X-rays to visualize breast tissue and detect abnormalities suggestive of breast cancer.
**Why the Correct Answer is Right**
Mammography is an example of a **screening test**, which aims to identify diseases in asymptomatic individuals or detect them at an early stage. The primary goal of mammography is to reduce breast cancer mortality by detecting tumors before they become clinically apparent. The American College of Radiology (ACR) and the Society of Breast Imaging (SBI) recommend annual mammography screening for women aged 40-74 years. The mammography process involves compressing the breast between two plates, which allows for the production of high-quality images that can help radiologists identify potential abnormalities.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because mammography is not a **diagnostic test**; it's a screening tool used to identify potential abnormalities that require further investigation.
**Option B:** Mammography is not an **invasive procedure**; it's a non-invasive imaging modality that doesn't require insertion of instruments or devices into the breast tissue.
**Option C:** While mammography can be used for **diagnosing breast cancer**, it's not an example of a **therapeutic intervention**; its primary purpose is to detect and diagnose, not treat.
**Clinical Pearl / High-Yield Fact**
Mammography is most effective in detecting **non-palpable lesions**, which are tumors that cannot be felt by palpation. These lesions often have a higher likelihood of being malignant and are frequently detected through mammography.
**Correct Answer: C. Diagnostic test.