Objective:

To analyze the diagnostic challenges associated with cystic and solid breast masses, particularly emphasizing the significance of accurately distinguishing metaplastic breast carcinoma from benign conditions to prevent misdiagnosis.

Key Findings:

• Metaplastic breast carcinoma (MBC) can be misdiagnosed due to similar clinical and sonographic features with benign conditions, emphasizing the need for thorough evaluation.
• Case 1 was misdiagnosed as plasma cell mastitis before being correctly identified as MBC through a vacuum-assisted breast biopsy, following a breast MRI.
• Case 2 was confirmed as a benign breast cyst with fibrocystic changes.

Interpretation:

The cases underscore the importance of thorough diagnostic evaluation, including imaging and histopathological analysis, to avoid misdiagnosis of aggressive breast cancers, which can lead to delayed treatment.

Limitations:

• The study is based on only two case reports, limiting generalizability and diversity in case selection.
• Potential biases in clinical interpretation and diagnostic processes at different institutions.

Conclusion:

Accurate diagnosis of cystic and solid breast masses necessitates a comprehensive approach, integrating clinical history, imaging, and pathology to ensure timely and appropriate treatment, preventing delays in care.