<prompt> Bilaterality with medullary carcinoma of breast is seen in:5102050  <response>: Medullary carcinoma is a special-type breast cancer; it accounts for 4 of all invasive breast cancers and is a frequent phenotype of BRCA1 hereditary breast cancer. Grossly, the cancer is soft and hemorrhagic. A rapid increase in size may occur secondary to necrosis and hemorrhage. On physical examination, it is bulky and often positioned deep within the breast. Bilaterality is repoed in 20 of cases. Ref: Schwazs principle of surgery 9th edition, chapter 17. 