A new session in this Congress was the development of a discussion panel re
garding controversies and queries about the main topics of treatment and pr
ophylaxis of severe systemic mycoses. Experts presenting each side of three
controversial areas provided an interchange of ideas and clarified those a
reas where there remain substantial disagreements. Some common recommendati
ons have been made, and some differences persist. The contents of this sess
ion are compiled in this paper. Due to the limitations of space, this paper
presents the most relevant parts of each presentation. The large and up-to
-date list of references should be useful to gain a better understanding of
these subjects.