Abstract
A case of adenoid cystic carcinoma of the breast in a 45-year-old woman is reported. She was admitted to the hospital because of a mass without tenderness in her right breast. On clinical examination there was a firm, well-circumscribed tumor with a diameter of 0.5 cm in the right upper-outer guadrant. Enlarged lymph nodes were not found. Ultrasound examination suggested malignant findings. A biopsy was performed to confirm the diagnosis. In its result, the tumor microscopically showed cribriform and solid areas with tumor cells which were small, uniform and poor in cytoplasm. The histochemical staining demonstrated a pattern of periodic acid-Schiff negative and alcian blue positive mucin in the pseudocystic spaces. Secondarily, wide excision and axillar hymph nodes dissection were performed. The axillary lymph node metastasis was not observed pathologically. It is now 18 months after the initial treatment, with free from recurrence.
