Benign fat necrosis simulating bilateral breast malignancy after reduction mammoplasty

Area of Science:

• Breast surgery complications
• Diagnostic imaging in oncology
• Pathology of breast tissue

Background:

• Fat necrosis is a known sequela of breast trauma, including surgical procedures.
• Extensive fat necrosis can manifest as a palpable mass and present imaging characteristics similar to malignancy.
• Distinguishing fat necrosis from breast cancer is critical for appropriate patient management.

Observation:

• A young woman presented with bilateral breast masses 2 years post-reduction mammoplasty.
• Imaging revealed characteristics highly suspicious for breast cancer.
• The patient's history included bilateral breast surgery.

Findings:

• The bilateral breast masses were ultimately diagnosed as extensive fat necrosis.
• Despite suspicious imaging, biopsy confirmed the benign nature of the lesions.
• This case highlights the potential for fat necrosis to mimic malignancy.

Implications:

• Biopsy is essential for differentiating fat necrosis from breast cancer, regardless of patient demographics or imaging findings.
• Awareness of this diagnostic challenge is important for radiologists and surgeons.
• Accurate diagnosis prevents unnecessary surgical interventions for benign conditions.