Preferred Label : Breast Periductal Stromal Tumor;
NCIt synonyms : Periductal Stromal Tumor; PDST;
NCIt definition : A rare, low-grade malignant stromal tumor that arises from the breast. It is characterized
by the proliferation of atypical stromal spindle cells that surround benign tubules
and ducts in a pericanalicular pattern. Mitotic activity is present. The tumor has
a multinodular and infiltrative growth pattern and lacks the leaf-like architecture
of phyllodes tumor. Wide excision with negative margins is the treatment of choice.;