Hibernation of masses suspected to be remnant tumors after surgical resection of retroperitoneal liposarcoma is related to improved overall survival.

Hibernation of a recurrence-suspected mass was related to improvement of overall survival in patients with a mass detected within 6 months. This specific patient group should be monitored with care to see if the size of the mass increases. When a mass seemed to be hibernating, a favorable prognosis could be expected.