Pseudoangiomatous hyperplasia of mammary stroma in an HIV patient.

Pseudoangiomatous hyperplasia of the mammary stroma is a benign mesenchymal proliferative lesion. It is rarely observed as a tumor mass that has to be differentiated from angiosarcoma. We give a review of the literature and report a case unusual in that it occurred in a clinical setting of HIV infection, was rapidly growing, and has been the largest described so far.