I have uploaded the Tutorial on Breast Pathology, Part II which covers the basics of invasive carcinoma.  As with the other tutorials it is in pdf format.  Please feel free to comment or post suggestions for future articles. I hope you find this information useful.
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Question: I was just diagnosed with Stage I invasive lobular carcinoma, 1.4 cm, ER/PR positive and Her2/neu negative. But my doctor told me the pathologists found some cancer cells in my sentinel lymph node, but they were so small that he said they are called “isolated tumor cells.” What does this mean?

The better you understand your pathology report, the better prepared you’ll be to discuss your prognosis and treatment with your team of physicians. While pathology reports vary depending on the laboratory, they are generally divided into the following sections:

Gross Description
Final Diagnosis
Microscopic Description or Comment