Sally is grossing her first breast specimen as a PA rotating…

Sally is grossing her first breast specimen as a PA rotating at Harper hospital.  She carefully inks the specimen and sections it.  She notes that the breast skin is remarkable for nodules, and the nipple is retracted.  The mass is 25mm in greatest dimension on the lower inner quadrant and appears to be invading the attached musculature.  Based on the overall presentation, the mass will likely be classified as ____ on the AJCC staging.