Breast adenomyoepithelioma, a case report
Etienne El-Helou1, Jad J Terro1, Alaa Kansoun1
1General Surgery Department, Faculty of Medical Sciences, Lebanese University, Mount Lebanon, Lebanon.
International Journal of Surgery Case Reports
|January 5, 2021
Summary
Adenomyoepithelioma, a rare breast tumor with epithelial and myoepithelial cells, was identified in a 66-year-old woman. This case highlights the importance of considering this rare tumor in breast mass diagnoses.
Area of Science:
- Oncology
- Pathology
- Surgical Oncology
Background:
- Adenomyoepithelioma is a rare breast tumor originating from epithelial and myoepithelial cells.
- First described in 1970, most adenomyoepitheliomas are benign, though malignant variants exist.
- This tumor type presents a diagnostic challenge due to its rarity and biphasic cellular proliferation.
Observation:
- A 66-year-old female presented with an asymptomatic breast mass measuring 18x17x15 mm.
- The mass exhibited irregular borders on imaging.
- Metastatic workup was negative, and the patient underwent wide local excision with intraoperative negative margins.
Findings:
- Final histopathological diagnosis confirmed the breast mass as an adenomyoepithelioma.
- The surgical excision achieved pathologically clear margins.
- The tumor was characterized by the distinct proliferation of epithelial and myoepithelial cell populations.
Implications:
- This case underscores the necessity of including adenomyoepithelioma in the differential diagnosis for breast masses.
- Awareness of this rare entity can aid clinicians in accurate and timely diagnosis.
- Further research into the behavior and management of adenomyoepithelioma is warranted.


