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Primary squamous cell carcinoma of the breast is a rare phenomenon. Similarly, the finding of squamous cell carcinoma entirely inside the breast without involvement of skin is very rare.We present the case of a 75 year old female with a right breast lump and confirmed as a pure squamous cell carcinoma of the breast by needle core biopsy. Wide local excision of the lump was performed. The final histopathological examination revealed a primary squamous cell carcinoma of the breast. A literature review was performed. To our knowledge this is first reported case of primary squamous cell carcinoma from the Caribbean countries.