The paper presents up to date knowledge about oncocytic neoplasms (Hürtle cell tumor). The following paper is based on the biggest study group in Poland. Most of these tumors were benign. The histopathological diagnosis was usually very difficult. The authors pointed out that the most important problem in the treatment process was the histopathological examination. Even intraoperative pathological diagnosis is not discriminative for the diagnosis. All diagnoses were based on paraffin-embedded samples examination. In the authors' opinion treatment process should be individualised according to all clinical and histopathological results.