Human Anatomy, Physiology, and Medicine. Anything human!
Mon Nov 28, 2011 4:50 pm
I have same basic questions.
I have a problem defining what carcinoma means: a tumour originating in the epithelium, or can it also come from endothelium, or basically any tissue that derives from the embryonic ectoderm?
Same with sarcoma: any type of tumour that has the origin in the mesoderm? (e.g. A tumor of the blood cell lineage, bone marrow, are also considered sarcoma? A tumour of mesothelium is also a sarcoma?)
One more: is it true that a mesothelial cell and a mesenchymal cell has nothing to do with each other other than they both originate in the embryonic mesoderm?