Intravascular large B-cell lymphoma of the breast

The case of an 80-year-old woman with symmetrical breast engorgement and nonspecific systemic symptoms progressively developing over 3 months and confirmed on surgical biopsy to be due to an intravascular large B-cell lymphoma (ILBCL) is presented. To our knowledge, ILBCL has never been reported in the breast before and its mammography and ultrasound appearances are described.