Primary squamous cell carcinoma (SCC) is a rare form of breast carcinoma. Incidence is reported to be 0.1- 3.6%. We report a case of a young woman, 37 year-old, with history of a lump in the upper outer quadrant of the left breast with ulceration of the skin surface. Menarche occurred at age of 12. The patient was married, had two deliveries and had her first child at age of 26. She did not use contraceptive pills. Diagnosis of the tumour of the breast was made at the Department of surgery in General Hospital in Bijeljina in September 2007. Clinical examination, mammography and ultrasonography were performed. Physical examination revealed a circumscribed and firm mass measuring 60x60x80mm. Mammogram showed a round, high-density mass with almost regular but partially irregular margin. Ultrasonogram of the left breast tumor identified an irregularly shaped hypoechoic lesion. After clinical staging of the disease, we performed incision biopsy of the skin and tumour of the left breast with histopathology examination (standard hematoxylin and eosin). Patient had estrogen and progesteron receptors negative and was HER2/neu negative. After histopathology, patients case was presented to the working group for breast tumors which decided to start with the neoadjuvant chemotherapy using platinum. After six cycles of neoadjuvant chemotherapy, regression of breast tumor was confirmed. Working group decided that radical mastectomy of left breast should be performed
Key words: squamous cell carcinoma, rare forms
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