A 28-year-old woman comes to the community-based health center because she noticed a tender, firm mass in her right breast in the same general location where she was hit by a softball 2 years ago. Vital signs are temperature 37.0°C (98.6°F), pulse 68/min, respirations 18/min, and blood pressure 118/64 mm Hg. She weighs 56 kg (123 lb) and is 155 cm (5 ft 1 in) tall; BMI is 23 kg/m2. Physical examination is normal except for an indurated and poorly defined mass in the right breast with local skin retraction. There is no palpable adenopathy. Mammogram shows fine, stippled calcification. Which of the following is the most likely diagnosis?
A) Fat necrosis
B) Fibroadenoma
C) Intraductal carcinoma
D) Lipoma
E) Phyllodes tumor
Ans:A) Fat necrosis