[Adipose retroperitoneal tumors. Apropos a giant myxoid liposarcoma].

Liposarcomas are the most frequent retroperitoneal tumours, second only to lymphomas. We present a new case of giant retroperitoneal liposarcoma treated in our hospital. A discussion is presented on the most peculiar aspects of this tumour, such us: multicentricity, tendency to local relapse, and need to post-operative (adjuvant) radiotherapy. A review of all nationwide cases over the last few years is included.