Breast carcinoma is the most common malignant tumour and the leading cause of carcinoma death in women, with more than 1,000,000 cases occurring worldwide annually . Fine needle aspiration cytology has been used as an initial investigative procedure for breast lesions, it is a rapid and non-invasive procedure that has been increasingly used as an alternate to (2-4) excision biopsy of palpable breast lesions. Aims and Objectives 1. To diagnose the pathology of malignant breast lesions. 2. To grade the lesions cytologically. 3. To compare the cytologic diagnosis with the histopathological diagnosis. In the present study was carried out 91 cases of suspected malignant breast lesions were studied by FNAC. Clinical and histological features were correlated. Results: The most common cytological diagnosis was Duct carcinoma (73 cases). Conclusion: FNAC is a rapid, reliable, less traumatic and safe diagnostic tool to differentiate non–neoplastic from neoplastic breast lesions.