Grzybowski's keratoacanthoma--the man behind the eponym

The first textbook of dermatology in Poland was written in the 20th century by Ludwik Bierkowski, the professor of surgery. The later development of this field was due the 19th and 20th century dermatologists. The most prominent Polish dermatologist of the first half of the 20th century was professor Marian Grzybowski. His main contribution to international dermatology was the first description in the medical literature of a specific variant of keratoacanthoma, which has since then been called Grzybowski's eruptive keratoacanthoma or generalised eruptive keratoacanthoma--Grzybowski's variant. The goal of this paper is to give an overview of most important biographical details and other medical contributions of Grzybowski to international dermatology.