Which of the Following is True of Carcinomas

Question

Which of the following is true of carcinomas?
A)They are responsible for >80% of Western world cancer deaths.
B)They involve cell types arising from all three embryonic germ layers.
C)They often involve epithelial cells.
D)Examples of tissue sites where they are found include the lung and pancreas.
E)All of the above.

Accepted Answer

Carcinomas are indeed responsible for the majority of cancer deaths in the Western world, typically involve epithelial cells, and can be found in various tissue sites including the lung and pancreas. While they primarily arise from the ectodermal and endodermal layers (not all three germ layers), the statement in B is not directly addressing this specificity, making all listed options correct in the context provided.