The Emperor of All Maladies: A Biography of Cancer is a book written by Siddhartha Mukherjee, an Indian-born American physician and oncologist.

In the end, cancer truly emerges, as a nineteenth-century surgeon once wrote in a book's frontispiece, as "the emperor of all maladies, the king of terrors.

"The book weaves together Mukherjee's experiences as a hematology/oncology fellow at Massachusetts General Hospital as well as the history of cancer treatment and research.

Galen's theory was later challenged by the work of Andreas Vaselius and Matthew Baille, whose dissections of human bodies failed to reveal black bile.

Rudolph Virchow first observed leukemia, and Franz Ernst Christian Neumann localized the pathology to the bone marrow.

[6] The Emperor of All Maladies won the 2011 Pulitzer Prize for General Nonfiction: the jury called it "an elegant inquiry, at once clinical and personal".