25 year old female presenting with lump in breast to OPD-First investigation is
**Core Concept**
The initial evaluation of a breast lump involves a thorough history, physical examination, and imaging studies to determine the nature of the lump and rule out malignancy. The first investigation is crucial in differentiating between benign and malignant lesions.
**Why the Correct Answer is Right**
The correct answer is an ultrasound examination of the breast. This is because ultrasound is a non-invasive, low-cost, and highly sensitive imaging modality for evaluating breast lumps. It can differentiate between solid and cystic lesions, and guide fine-needle aspiration or core needle biopsy for tissue diagnosis. Ultrasound is particularly useful in young women, as it can help distinguish between fibroadenomas (benign tumors) and malignant lesions.
**Why Each Wrong Option is Incorrect**
**Option A:** Mammography is not the first-line investigation for a 25-year-old female with a breast lump. Mammography is more useful for women over 40 years of age, as it can detect smaller tumors in denser breast tissue.
**Option B:** MRI (Magnetic Resonance Imaging) is not typically used as the first investigation for a breast lump. While MRI is highly sensitive for detecting breast cancer, it is more expensive and not readily available in all settings.
**Option C:** CT (Computed Tomography) scan is not indicated as the first investigation for a breast lump. CT scans are more useful for evaluating the chest and abdomen, and are not typically used for breast imaging.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that the initial evaluation of a breast lump should always include a thorough history, physical examination, and imaging studies to determine the nature of the lump and rule out malignancy.
**Correct Answer: B. MRI (Magnetic Resonance Imaging) is not typically used as the first investigation for a breast lump. While MRI is highly sensitive for detecting breast cancer, it is more expensive and not readily available in all settings.