Although an azygos lobe is a rare anomaly of the lung, its radiological appearance has been well defined. Clinically, the azygos lobe has been accepted as a normal variation that can simulate various diseases. However, on chest roentgenograms, this anomaly may appear to be present if there are any other pathological conditions. So, the detection of this anomaly and clarification of its precise anatomical features are important not only to differentiate this anomaly from other pathological conditions, but also to alert the surgeon to potential problems during surgery. In the present study, an azygos lobe was observed on the right lung of a 56-year-old male cadaver. Because of the clinical importance and rare occurrence, this anomaly was compared and discussed with other related articles.