We have made a retrospective study of six cases of juvenile nasopharygeal angiofibroma stage III.A and one case of a large osteoma of the ethmoid labyrinth, all of them treated surgically through a bilateral horizontal osteotomy of the maxilla, Lefort I, with very good results. This is a new technique that has been used for the first time in our hospital, facilities the exposure of the skull base and sorrounding structures and allows a complete removal of the tumor with good control of the hemostasis, minimal blood loss and leaving no disfiguring scar on the face. The technique is described in detail (An Fac Med UNMSM II Epoca 1989; a (1-2): 45-48).

Annals of the Faculty of Medicine of the National University of San Marcos has posted just over five decades in almost uninterrupted annual volume; in his early years in bimonthly numbers and in his later years quarterly. 54 volumes until 1971, when it ceased to publish, diverse and complex circumstances were published. In the years when there was a regime Colleges in organizing the Universidad Mayor de San Marcos, it was published under the direction of Dean.