"Plasma cell mastitis has a characteristic appearance. Calcifications are thick, linear, rod-like or cigar-shaped. Calcifications can be up to 10 mm long. They tend to be bilateral, often symmetrical in distribution and orientated with long axes pointing toward the nipple1. Branching may sometimes be seen."
"Plasma cell mastitis is a benign breast condition that represents calcification of inspissated secretions in or immediately adjacent to ectatic benign ducts. It is clinically relevant since it shares some clinical, microscopical and macroscopical similarities with breast cancer 5."