The Emperor of All Maladies: A Biography of Cancer

Physician and researcher Siddhartha Mukherjee wrote this book in 2010 as a biography of cancer: where the disease comes from, how it changes its behavior over the centuries, and why it resists being beaten so stubbornly. He is an oncologist, he treated real patients while writing, and that shows throughout the text, written by someone who saw the results of medical decisions on the faces of people lying in hospital beds.

The thread that ties the narrative together is the story of a patient he calls Carla, treated for leukemia when he was still a resident. Her story is woven in with the larger story of the disease, constantly reminding us that behind every scientific advance there is someone waiting for test results.

This summary explains the ideas and the history told in the book, and it does not replace tests, a diagnosis, or a conversation with an oncologist. Cancer is a serious disease, with hundreds of different variations, and any decision about screening or treatment has to go through a health professional and through each person's own insurance and health plan.

The book begins in ancient Egypt, with the papyrus attributed to Imhotep, a physician who cataloged cases of breast tumors around 2500 years before Christ. About one of the cases, the Egyptian text records a blunt conclusion: there is no treatment. It is probably the first written account of cancer in the history of medicine.

Mukherjee also tells the story of Atossa, a Persian queen who supposedly had breast cancer and had an enslaved Greek doctor cut out the tumor. The account is old and incomplete, but it shows that the idea of treating cancer surgically had been on the human mind from early on, even without understanding what caused that lump.

For centuries, the dominant explanation came from Galen, a Roman physician who blamed cancer on an excess of black bile in the body. That theory, wrong from start to finish, survived in an astonishing way until nearly the nineteenth century, delaying any real understanding of the disease, until science swapped black bile for the cell.

In the late nineteenth century, the American surgeon William Halsted, of Johns Hopkins, created the radical mastectomy: a surgery that removed not only the breast tumor but the chest muscle, the lymph nodes in the armpit, and a good part of the surrounding tissue. The logic was this: if cancer spreads locally, the more you cut around it, the greater the chance of removing everything before it advances.

That idea became medical dogma for decades. Surgeons competed with one another over even more extensive operations, believing that surgical aggression was a synonym for cure, with nobody rigorously testing whether cutting more really saved more people.

Only decades later, by comparing radical surgery against more conservative versions, did it become clear that the excess did not bring a survival benefit proportional to the damage it caused. Medicine had to admit that a practice accepted by generations of respected doctors did not hold up when properly tested, and the lesson that runs through the whole book remains: medical conviction, however sincere, is no substitute for a comparative trial.