INTRODUCTION. Patient’s prognosis and management depend on correct diagnosis of bone tumor. The most important is to differ the benign lesions from malignant OBJECTIVE. The aim is to present two cases of bone tumors of a similar CT presentation but different histological diagnosis – benign and malignant. MATERIAL AND METHOD. Two cases of bone tumors detected in multilinear CT are presented. The CT scans of 1mm thickness with 30% overlap are presented, schemes of the performed scans and spatial reconstructions are given. DISCUSSION. Bibliographic findings are analyzed concerning various diagnostic methods and distinguishing between benign and malignant lesions. Oncological alertness and aspiration in definite diagnosis are emphasized. Imaging techniques have some limitations and histological sampling/biopsy is often required for an unmistakable diagnosis. CONCLUSIONS. Some tumors may present similarly in multilinear CT. The method is highly sensitive but poorly specific in diagnostics of bone tumors.