Pathology report shows infiltrating mammary carcinoma, no special type, low combined histologic grade, Low proliferative rate with apocrine cytology, measuring at least 6MM in greatest extent (best measrued on P63 IHC Slide) Calponin and P63 show absence of myoepithelial cells int he neoplastic tubules, consistent with an invasive interpretation. Immunohistochemical studies for estrogen receptor and progesteron receptor are negative.
My questions: No special type? What does that mean?