Path report, what does it all mean?

Hello all of you wonderful ILC ladies.  I haven't posted for awhile on this board, I'm going through chemo, and I have been on the chemo board, or just out of it.  I have read a bit of discussion on the ILC board, but like I said, I've been out of it.  I finally asked for a copy of my path report,and I have a few questions.  You all have so much information, I hope you can help me be sure I'm not missing anything.  Okay, here goes, I'm going to put in the medical lingo, and then ask questions at the bottom.

Breast, left, simple mastectomy:

Invasive lobular carcinoma, pleomorphic variant.

Location of tumor:  Approximately 10 o'clock position

Margins:  Margins of excision are uninvolved by invasive carcinoma

Size of invasive carcinoma: 1.5 cm greatest dimension, as measured on the glass slide.

Extent of Invasion:  The tumor invades the lower aspect of the dermal collagen of the skin.  No dermal lymphatic Invasion identified.  No evidence of Paget's disease of the epidermis.

Vascular Invasion:  Vascular/lymphatic Invasion is not identified.

Perineural Invasion: Is identified

Microcalcifications:  Microcalcifications are focally present in relationship to invasive carcinoma.

Multicentriec lobular carcinoma in situ and atypical lobular hyperplasia.

Location of tumor:  Adimixed with invasive carcinoma, relatively minor component.  Involving a lactiferous duct ("pagetoid" spread).  Multicentric involvement of all quadrants of the parenchyma by foci of lobular carcinoma in situ, atypical lobular hyperplasia, and foci of "pagetoid" ductal spread.  With involvement of small ducts (solid pattern). 

Then in a further description of an ultrasound guided biopsy that I had in May:

Invasive duct carcinoma, combined Intermediate grade II of III.  ER 90%, PR30%, Her2 neg 1+

Although this invasive tumor shows few foci suggestive of lobular infiltrative pattern, the overall findings are more in keeping with an invasive duct carcinoma.  This assessment is supported by the presence of focal neoplastic ducts, the degree of nuclear pleomorphism, and the focal definitive positive reactivity for e-Cadherin.

Then there is this description of an excisional biopsy I had first:

In the currently described specimens, the in situ and the invasive tumor react essentially negatively on e-Cadherin stain and positively upon review of 34BE12 special stain.  These reaction patterns, along with the morphologic features, fit best for lobular origin of this malignancy.

According to the literature, the pleomorphic variant of invasive lobular carcinoma appears to share molecular genetic and immunophentypic characteristics of other forms of lobular carcinoma, although it  appears to have an increased frequency of adverse prognostic characteristics such as higher nuclear grade and higher frequency of HER-2 gene amplification.

Okay, so I am wondering what Perineural Invasion. and "pagetoid"spread are?  I also wonder if it seems that I had both ILC and IDC.  Can someone fill me in on what the e-Cadherin testing means,also the 34BE12 special stain.  It seems that one area had positive reactivity and the other was negative.  Does that have any practical meaning?  Also, is there anything significant in what it says about the pleomorphic variant?  The report itself seems "pieced" together.  Any input you all have is most appreciated.  Overall I feel like it is basic, and good information.

Thank you and Hugs,

Susan