Saint's triad

Lore & Background

Charles Frederick Morris Saint was a British surgeon and Emeritus Professor who played a key role in developing surgical education in South Africa. He emphasized the importance of considering the possibility of multiple separate diseases in a patient whenever the history and physical examination results were atypical of any single condition. Traditionally, there is thought to be no pathophysiological basis for the coexistence of the three diseases in Saint's triad.

Reader's Guide

Saint's triad serves as a counterexample to Occam's Razor, the diagnostic principle that favors the simplest explanation for a patient's symptoms. Saint argued that more than one disease may be responsible for clinical signs and symptoms, a principle also expressed as Hickam's dictum. In recent times, the possibility of an underlying pathophysiology has been considered, with obesity associated with all three conditions and a suggestion of an underlying connective tissue defect such as 'herniosis.' The triad remains a notable concept in medical education, reminding clinicians to avoid oversimplification in diagnosis.

Did You Know?

• Saint's triad consists of cholelithiasis, hiatal hernia, and diverticular disease.
• The triad is named after British surgeon Charles Frederick Morris Saint, who contributed to surgical education in South Africa.
• Traditionally, there is thought to be no pathophysiological basis for the coexistence of these three diseases.