OBJECTIVE: To raise the main radiological alterations in patients who had been submitted previous the nasal-sinusal surgery and those they had not evolved satisfactorily in the postoperative one demanding in such a way reverse speed-operation. MATERIAL AND METHODS: Retrospective study of computerized tomography in cuts axial, coronal and sagittal of 24 patients who had demanded nasal-sinusal reverse speed-operation between January 2010 and January of 2012 in Blumenau/SC. RESULTS: Between the patients, the main joined alterations had been mucous thickening of the maxillary sinus (87.5%), shunting line of septum (75%), mucous and/or material hypodense thickening in ethmoidal (66.6%), hypertrophied inferior cornet (58%), mucous and/or material thickening hypodense in frontal sinus (54%) and esphenoidal (50%). CONCLUSION: The analysis of the computerized tomography demonstrates persistent structures that can exactly be responsible for the maintenance of the clinical picture of the patients after the initial surgical procedure. The computerized tomography is basic for the diagnosis and establishment of the therapeutical behavior in these cases.