Abstract Objectives: Bone marrow transplantation is a preferred treatment method for some hematological diseases. During this treatment method, patients encounter many additional clinical problems independent of their illness. Some of these problems that arise are otorhinolaryngological problems. The aim of this study is to evaluate the types and frequency of otorhinolaryngological problems seen in the hospital isolation process after bone marrow transplantation and the treatments applied to them and to draw attention to the points that the transplant team should pay attention to during the hospital isolation process of these patients. Materials And Methods: Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) guidelines were followed for this original observational article. Thirty of 451 patients, who were taken into isolation after bone marrow transplantation, requested consultation from the otorhinolaryngology clinic, were included in this retrospective study using hospital records. Results: Following bone marrow transplantation, during the hospital isolation process, the most common reasons for otorhinolaryngological consultation were hearing loss and epistaxis. Conclusion: Although infections are expected more in patients after transplantation, during the isolation process after bone marrow transplantation, in terms of otorhinolaryngology hearing loss and epistaxis may be more common than infections. This situation should be kept in mind by transplant teams and patients should be closely monitored. Keywords: Bone Marrow Transplantation, Otorhinolaryngological Consultation, Hearing Loss, Epistaxis.