A 35 years old lactating mother presented with a painful breast lump. The most appropriate initial investigation should be: (AIIMS November 2013, Nov 2012)
**Question:** A 35 years old lactating mother presented with a painful breast lump. The most appropriate initial investigation should be: (AIIMS November 2013, Nov 2012)
A. Mammography
B. Ultrasound
C. Fine-needle aspiration cytology (FNAC)
D. Serum estrogen and progesterone hormone levels
**Core Concept:** Painful breast lump in a lactating mother is a common clinical presentation that requires a proper diagnostic approach to rule out various pathological conditions like fibroadenoma, mastitis, abscess, or more serious entities like breast cancer. AIIMS PGME course focuses on selecting the most appropriate initial investigation based on the clinical scenario.
**Why the Correct Answer is Right:** The correct answer is **B. Ultrasound** because it is the most sensitive and specific modality for detecting breast lesions. Ultrasound can visualize the breast lump, determine its nature (solid or cystic), and assess its relation to the surrounding tissues. It is particularly useful in lactating mothers as mammography may not be accurate due to the overlapping mammary gland parenchyma with the lump.
**Why Each Wrong Option is Incorrect:**
A. **Mammography:** Although mammography is essential for detecting breast lesions, it is less sensitive in lactating mothers due to the overlapping mammary gland parenchyma with the lump. This makes ultrasound a more suitable initial investigation in this scenario.
B. **Serum estrogen and progesterone hormone levels:** Assessing hormone levels is relevant in evaluating the cause of breast pain, but it is not a direct investigation for the breast lump itself.
C. **Fine-needle aspiration cytology (FNAC):** FNAC is a procedure for obtaining cells or tissue samples to diagnose a lesion. It is not an investigation but a diagnostic procedure. Furthermore, it is less sensitive in lactating mothers due to the same overlapping mammary gland parenchyma issue as in mammography.
**Clinical Pearl:** AIIMS PGME focuses on selecting the most appropriate initial investigation based on the clinical scenario. In the presented case, ultrasound is the best choice due to its high sensitivity in detecting breast lesions and its ability to distinguish between solid and cystic lesions in lactating mothers. Mammography is less accurate in this population. Serum hormone levels and FNAC are diagnostic procedures, not investigations.