Antoni Lesniowski

Antoni Leśniowski (January 28, 1867–April 4, 1940) was a Polish surgeon. During 1912-1914, he was director of Warsaw’s St Anthony Hospital, then until 1919, was the head of the surgery department in the Holy Ghost Hospital in Warsaw. During 1919-1936, he was professor of surgery at the University of Warsaw.

In 1904 he described regional ileitis, especially intense in the terminal region of the ileum (ileitis terminalis). The same disease was described again in 1932 by American Burril Bernard Crohn and since that time in the worldwide literature is called Crohn’s disease, excluding the priority of  Leśniowski (only in Poland it’s called Leśniowski-Crohn’s disease). He also wrote a textbook of general surgery.

Antoni Leśniowski Antoni Leśniowski