Presentation and treatment of two massive intrapericardial lipoma. Case report.

INTRODUCTION AND IMPORTANCE: Primary pericardial tumors are very rare with an overall incidence of 0.001-0.007 % and account for approximately 10 % of heart neoplasms. We present two clinical cases of massive mature intrapericardial lipomas (maximum size 270 × 230 mm) that were successfully treated in our department. CASE PRESENTATION: The first case is that of a 67-year-old male patient who underwent diagnostic investigations after the onset of dyspnea, which confirmed an intrapericardial mass of 270 × 230 mm in size that extended into the left lung field and was treated surgically by a clamshell incision. The second case is that of a 48-year-old patient who was completely asymptomatic and occasionally confirmed to have a 170 × 110 mm intrapericardial mass around the heart, which was surgically removed via sternotomy, also resulting in a mature lipoma. CLINICAL DISCUSSION: In asymptomatic patients with small lesions, close monitoring is generally indicated. In asymptomatic patients with large lesions the decision should be made after multidisciplinary (MDT) evaluation. In symptomatic patients, surgical treatment is indicated. Lipomas are usually mature lesions with a capsule connected to the origin structure by one or more pedicles. Once reached the cardiac level and opened the pericardium, attention must be paid in resecting these pedicles given the area of origin and the possibility that they may be associated with vital structures. CONCLUSION: Both cases were characterized by slow recovery of normal cardiac function in the postoperative course. The average length of patient stay was 12 days, and one case was noted for readmission because a slight increase in pericardial effusion was detected at the scheduled ultrasound check after discharge. After further expert evaluation and steriodine therapy, the patient was discharged to a healthy home after 5 days. This report aims to describe the decision-making process, successful surgical treatment and outcomes of two rare massive intrapericardial tumors.