In the teaching-learning process of the Pneumology course of the Medical Career, during the academic year, students must perform under the supervision of their instructors - teaching assistants of the Chair, literature review work on important topics of the specialty and relevant and pertinent at the time of the development of the course.For this reason, this edition presents the bibliographic review work of the students with their instructors that will be developed during the Academic Year 2021 of the Chair of Pneumology of the School of Medical Sciences of the National University of Asuncion, School of Medical Sciences of the National University of Asuncion.