Breast Ca Diagnosis

Hi.  Thank you for taking my question.  I am a 31 y/o female w/ history of right breast lumpectomy.  Path report is as follows:
     Right breast, excisional biopsy, specimen measures 3.5 x 3 cm x 1.7 cm.  (By the way, On US report it mentions that this lump runs along chest wall.)  Diagnosis:  (1) invasive and in situ low grade ductal carcinoma with cribriform and tubular features measuring 1.2 cm.  (2) in situ ductal carcinoma is focally present at superior resecting margin. (3) Remaining breast tissue shows fibrosystic changes with ducal epithelial hyperplasia and focal atypia.
      Consulting doctor's report reads as follows:  "I believe that this breast is involved by a ductal carcinoma having both an in situ and invasive component.  The in situ component has prominent cribriform features, it exhibits a moderate degree of nuclear atypia and there are foci of central necrosis in some of the nests.  The tumor extends to some of the lobules resulting into so-called lobular cancerization.
      The invasive component is of low grade and characterized by the formation of irregular shaped ductal structures associated with prominent dysplastic stroma.  The architectural features are those of a mixed invasive cribriform and tubular carcinoma, both of them being low grade variants of ductal carcinoma.  The in situ component of the tumor is present at the inked surgical margin."  
     Please help me to understand this dx.  I see my surgeon next week to discuss options.  My lymph nodes weren't checked.  What is the prognosis for this type of ca? Thank you in advance.

[CCF-RN,MSN-JS]

Dear Pandora9049,  The pathology report from a biopsy gives information that is used to make decisions regarding further treatment.  "In situ" means that abnormal cells are contained within the lining of the duct or lobule.  "Invasive" carcinoma means that cancer cells have invaded the wall of the duct or lobule.   Grading gives information about growth rate of the cells, this is categorized as low, intermediate or high.  Low grade would describe less rapidly dividing cells.   This information along with the description of features of the cells, presence of abnormal cells at the surgical margin, will be looked at to make decisions about the next step in treatment.  Lymph nodes aren't usually checked at the time of biopsy, the lymph nodes are checked  if further surgery is determined to be necessary.