Q. I have a quick question on the cell of origin in leukemia. In our pharmacology class, we went through a section on cancer. There was a slide that said leukemia is a tumor of hematopoietic stem cells. But leukemia involves more than just hematopoietic stem cells, right? (more…)
Here are a couple great questions from one of my lovely students regarding invasiveness and metastasis.
Q. I have a quick question on today’s lecture. There is a slide near the end that has a picture of non-invasive carcinoma. For a tumor to be malignant, should it not be invasive? (more…)
Q: Why is endodermal sinus tumor named that way? Does it really come from the yolk sac? What’s with the “sinus”? (more…)
I get so many really good questions from my students. I post them for our class – and from time to time I post them here, too, so everyone can benefit. (more…)
Q. I am wondering if you could differentiate between what extracorpuscular and intracorpuscular anemia are in terms of where they occur and why there is a difference in the two types. (more…)
Q. I was reviewing for boards and had a question about blood types and pregnancy. (more…)
Here is a good question from one of our readers: “Why is blood group O+ not a universal donor?”
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Neoplasia can be a tough concept at first. You hear people talk about cancer all the time – but when we use the word “neoplasia” in pathology, it has a very specific definition, and it’s not the same thing as cancer. (more…)
We’ve talked here before about the 6 types of necrosis. One type, fibrinoid necrosis, is sort of an outlier – it’s added at the end of the list of main types of necrosis as if it doesn’t quite belong in the list (Robbins calls it a “special” type of necrosis). (more…)
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