This work investigates the evolution of St Mark's Hospital in London, examining how its specialized focus on colorectal diseases shaped the broader landscape of medical practice and institutional development. Lindsay Granshaw utilizes extensive archival research to trace the hospital's growth from its nineteenth-century origins to its modern status. The text argues that the institution's survival and success were contingent upon its ability to adapt to changing social expectations and advancements in surgical science. By situating the hospital within the context of London's medical history, the author provides a framework for understanding the role of specialized care in urban health systems.

Historians of medicine recognize this text as a definitive institutional study that effectively bridges the gap between clinical history and social development. Scholars frequently cite the book for its meticulous use of primary sources and its clear articulation of the challenges faced by specialized medical facilities in the Victorian and post-Victorian eras.