Eight patients are described who had palpable breast lumps with clinic
al and imaging features suspicious of malignancy which proved to be sc
lerosing lymphocytic lobulitis on histological examination. In this se
ries the typical mammographic appearance of this condition was increas
ed parenchymal density and/or localized stromal distortion while on ul
trasound, the typical appearance was an ill-defined mass with distal a
coustic shadowing. This rare benign condition has been described in as
sociation with longstanding insulin-dependent diabetes or autoimmune d
isease, but four of our eight patients had no such medical history.