Endocrine
1563, Italy (anatomical description of adrenal glands by Bartolomeo Eustachi); first pathologically recognized tumor case reported by Felix Fränkel in 1886, Germany
Pheochromocytoma, a tumor arising from chromaffin cells of the adrenal medulla, was entirely unknown to medicine until the late nineteenth and early twentieth centuries, when advances in pathology and surgical anatomy made its identification possible. For most of human medical history, the dramatic physiological crises it produced were attributed to cardiac, neurological, or hysterical causes. Its recognition as a distinct pathological entity unfolded in parallel with the broader scientific understanding of the adrenal glands and the hormones they secreted.
Historical Narrative
The adrenal glands, which sit atop the kidneys, were anatomically described by Bartolomeo Eustachi in 1563, but their physiological function remained entirely mysterious for nearly three centuries after their discovery. Early anatomists debated whether these structures served any purpose at all, with some proposing that they cushioned the kidneys or filtered impurities from the blood. The concept that the adrenal glands produced secretions essential to life emerged only in the nineteenth century.
Thomas Addison, a London physician, published his landmark monograph in 1855 describing the clinical consequences of adrenal gland destruction, establishing for the first time that the adrenal glands were indispensable to life. Addison's work prompted a surge of scientific interest in adrenal physiology, though the distinction between the cortex and the medulla as functionally separate entities took additional decades to clarify.
The chromaffin cells of the adrenal medulla, which give rise to pheochromocytoma, were identified and named in the late nineteenth century based on their characteristic staining reaction with chromium salts, a property that reflected their content of catecholamine-related substances. Alfred Kohn, an Austrian anatomist, contributed to the characterization of chromaffin tissue and its distribution beyond the adrenal gland itself.
The first pathologically recognized cases of what would be called pheochromocytoma were identified at autopsy in the late nineteenth and very early twentieth centuries. Felix Fränkel, a German physician, reported in 1886 what is widely regarded as the first documented case of a pheochromocytoma, describing a young woman who had died after dramatic episodic crises and was found at autopsy to have bilateral adrenal tumors. Fränkel did not understand the hormonal basis of the condition, and its connection to the substances the tumor secreted remained elusive at that time.
The isolation and characterization of adrenaline (epinephrine) around 1900, achieved through the parallel work of Jokichi Takamine and John Jacob Abel, provided the biochemical framework necessary to understand how tumors of the adrenal medulla might produce physiological crises. When researchers recognized that the adrenal medulla was the body's primary source of adrenaline, the mechanism by which an overactive or tumorous medulla could cause dramatic cardiovascular episodes became conceptually intelligible.
The term 'pheochromocytoma' was coined by Ludwig Pick, a German pathologist, in 1912, based on the tumor's staining characteristics. This naming formalized the entity within pathological nosology even before its clinical presentation was fully understood or reliably recognized during life.
The first successful surgical removal of a pheochromocytoma from a living patient was achieved in 1926, performed by César Roux in Lausanne, Switzerland, and independently around the same time by Charles Mayo at the Mayo Clinic in the United States. These surgical cases were landmark events because they demonstrated that the condition could be identified before death and potentially cured through operation, transforming pheochromocytoma from a postmortem curiosity into a surgical challenge.
Through the 1930s and 1940s, endocrinologists and surgeons accumulated experience with the condition, and the development of pharmacological agents capable of blocking the effects of catecholamines in the mid-twentieth century eventually changed the perioperative management of these surgeries, reducing their formerly very high mortality. Researchers also began recognizing that pheochromocytomas could occur outside the adrenal gland entirely, arising from paraganglionic chromaffin tissue distributed along the sympathetic chain.
Key Historical Figures
Historical narrative only — this page describes how Pheochromocytoma was understood historically. It is not medical advice and does not describe current diagnosis or treatment. Sourced from verified medical history references (NIH, Encyclopaedia Britannica, and standard medical history texts). See our medical disclaimer.