Results: Of the patients, 3 were female and 2 were male. The average age of the patients was 62.2 years (range: 54–77). All of the cases were symptomatic and the most common symptom was chest pain (3 cases). Diaphragmatic lipomas were located on the right posterolateral side in all cases. The methods of approach were thoracotomy in 4 cases and video-assisted thoracoscopic surgery in 1 case. Postoperative complications and mortality did not occur in any of the cases. The average hospital stay was 5 days (range: 3–7). There were no recurrences during the average follow-up of 21.4 months (range: 2–58).