Adenomyoepithelioma of breast – A diagnostic rarity

Background: Adenomyoepithelioma is an uncommon subtype of breast neoplasm that occurs most commonly in middle-aged and older adults. It usually presents as a solitary palpable mass or is detected on breast radiographic images. Histologically, biphasic tumor with proliferation of both the epithelial and myoepithelial cells. Case presentation ■ A 25 year old female presented with a painless progressive left breast lump. ■ On examination a 5 × 3 cm, firm, tender, mobile lump noted in the inferior quadrant of left breast extending in the retroareolar region. ■ Sonomammogram of left breast revealed BIRADS 3 lesion. ■ Patient underwent lumpectomy and specimen was sent for histopathology. ■ Biopsy was suggestive of Adenomyoepithelioma, likely benign. ■ Patient was kept on close follow up in view of recurrence. Conclusion: We are reporting this case as it emphasizes on the rarity of occurence, young age of onset, and challenges in diagnosis, and variety of surgical managements available.