Sahanashree Rajeshkumar
Robbinsville, New Jersey, United States

Somewhere around 2650 BCE, an Egyptian scribe described a patient with tumors of the breast, hard and resistant to pressure. When he turned to the question of treatment, he wrote what no patient wants to hear and no doctor wants to say: there was none. The Edwin Smith Surgical Papyrus did not soften the blow or search for gentler phrasing. It concluded that there was no treatment.¹

About 1,200 years later, in the hands of Hippocrates and his disciples, the disease found a name.^2,3 They looked at the hardened masses spreading through the body and reached for an image: karkinos, a crab. The veins fanning outward from a solid tumor resembled an animal’s legs. Centuries later, Paul of Aegina offered a second explanation, less visual and more behavioral: cancer was named for the crab because it “adheres to any part which it seizes upon in an obstinate manner,” the way a crab locks its claws and will not release.⁵ In his seventh-century commentary on Hippocrates, Stephanus of Athens held both explanations together, arguing that the name came from the crab’s aggression and from the resemblance of tumor veins to its legs.⁶ The crab seemed the one creature stubborn and uncanny enough to hold both qualities at once.

About 500 years after Hippocrates, the Roman encyclopedist Aulus Cornelius Celsus translated karkinos into Latin.⁷ He chose cancer, the Latin word for crab. In Sanskrit, karka also means crab, and one of the oldest Indian names for the disease, karkaroga, means “crab disease.” Across languages and cultures, the same animal kept appearing at the edge of the same human experience.³

Naming the disease after a crab embedded assumptions about its character. It was not simply a poetic image but a surprisingly accurate biological description. Because Greek tradition prohibited dissection, Hippocratic physicians could observe only what appeared on the body’s surface. Yet the image they chose captured much of what is now known: they described biology in the only language available to them, and that language proved remarkably precise.³

The word cancer carried its imagery forward through the centuries. During the Middle Ages, cancer was still understood through the humoral framework of the body containing four fluids: blood, phlegm, yellow bile, and black bile, and any imbalance among them produced disease. Excess black bile pooling in an organ was believed to give rise to malignancy. It was wrong. When anatomists finally began opening corpses in the sixteenth century, they searched everywhere for black bile. It was not there. What they found instead was the cellular architecture of disease: a reality far stranger and more precise than anything the humoral framework had imagined.⁸

By the twentieth century, cancer metaphors had expanded beyond the crab and, in Susan Sontag’s phrase, become punishing.⁴ After being diagnosed with breast cancer in 1975, Sontag argued that the dominant imagery of cancer was not merely descriptive but harmful.⁴ Tumors “invaded” the body, cells “colonized” healthy tissue, and treatments became “bombardments.”⁴ The patient was cast as a soldier, implying that survival depended on willpower and that death reflected a failure to fight hard enough.

When President Nixon signed the National Cancer Act in December 1971, its rhetoric was already martial: an “all-out assault,” a “relentless and insidious enemy,” and a “conquest.” Nixon framed cancer as a single, identifiable threat requiring the full force of US science. One proposed title was the Conquest of Cancer Act, and a cure was promised by the 1976 bicentennial. But 1976 came, and patients were still dying. If cancer were a battle, then death became defeat, and the language used to rally research funding became another burden for patients to bear.⁹

Modern oncology complicates this history further by revealing that cancer is not a single entity but a shifting constellation of cellular errors, each shaped by mutations, environments, and time. Even as knowledge sharpens, uncertainty persists, reminding us that explanation does not guarantee control, and that language still mediates how patients understand risk, hope, and survival. It shapes decisions in clinics, conversations at bedsides, and the stories families tell themselves about what is happening and what may come next.

What the ancient naming grasped, and what the military framing could not accommodate, is that cancer originates from within. It is the body’s own cells, released from the mechanisms that keep growth bounded, proliferating past the point of use. There is only tissue that has stopped listening to the body’s signals that growth should end. It is itself a living thing, persistent and moved by its own biology, behaving according to its nature and indifferent to what the body around it needs. Xeni Jardin, a journalist and cancer survivor, captured the problem with the alternative: “Cancer, I soon learned, is my own cells going rogue. Suddenly, all the combat language was confusing. Am I the invading army or the battleground? Am I the soldier or a hostage the soldier’s trying to liberate?”¹⁰ The crab does not generate this confusion. It names something without assigning moral valence, without making the patient responsible for the outcome of a war they did not declare.

The history of the word cancer is the history of what humans have needed from language when confronted with what they cannot cure. The Hippocratic image revealed something true about the disease’s behavior fifteen centuries before anyone could look inside the body to confirm it. The humoral framework gave physicians a vocabulary for a condition that defied explanation. Even the military metaphor succeeded in directing unprecedented resources toward cancer research. What gets obscured in the gratitude for what each metaphor accomplished is what each one cost. The humoral framework locked treatment within a theory that bore no relation to reality; the military framework handed the dying a language that framed their death as personal failure. Every metaphor is also a set of walls.^2,4,8,9

What makes the history of cancer unusual is not that physicians repeatedly misunderstood the disease, but that they misunderstood it in ways that were, for a time, useful. Error, in the history of medicine, is rarely pure error. More often, it is a scaffold: something erected around a mystery that allows understanding to climb higher before it must eventually come down. The danger is not the scaffold itself but the moment it gets mistaken for the building.⁸

Cancer is a crab. For twenty-five centuries, languages and cultures have independently returned to the same animal, as close to consensus as the ancient world could offer. The Egyptian scribe saw something different: not a name, but a verdict—the blunt fact of intractability, recorded without softening. It may be worth returning to that kind of looking and asking whether every word we now place around this disease helps us see more clearly, or merely makes the darkness more bearable.^1,3

References

1. James Henry Breasted, The Edwin Smith Surgical Papyrus (Chicago: University of Chicago Press, 1930).
2. Siddhartha Mukherjee, The Emperor of All Maladies: A Biography of Cancer (New York: Scribner, 2010).
3. Demetrios Panegyres, “The Story of How Cancer Got Its Name,” Cancer 130, no. 15 (2024): 2702–2706. https://doi.org/10.1002/cncr.35428.
4. Susan Sontag, Illness as Metaphor (New York: Farrar, Straus and Giroux, 1978).
5. Paul of Aegina, Medical Compendium in Seven Books, trans. Francis Adams (London: Sydenham Society, 1844–1847), 6.45.
6. Stephanus of Athens, Commentary on Hippocrates’ Aphorisms, 6.38, in Corpus Medicorum Graecorum 11.1.3.3, ed. Leendert Westerink (Berlin: Akademie Verlag, 1995).
7. Aulus Cornelius Celsus, De Medicina, trans. W. G. Spencer (Cambridge, MA: Harvard University Press, 1935).
8. Owsei Temkin, “The Scientific Approach to Disease: Specific Entity and Individual Sickness,” in The Double Face of Janus (Baltimore: Johns Hopkins University Press, 1977).
9. Oluwafemi Brawley, “The 50 Years’ War: The History and Outcomes of the National Cancer Act of 1971,” Cancer 128, no. 1 (2022): 15–24.
10. Xeni Jardin, quoted in William Wan, “The Problem with Calling Cancer a ‘Battle,’” The Washington Post, November 8, 2017.