The 1994 WHO classification divides liposarcomas into five categories:
well-differentiated: includes lipoma-like, sclerosing and inflammatory subtypes
round cell (poorly differentiated myxoid)
Liposarcomas are rare in children and adolescents but most such cases are myxoid liposarcomas. In this age group, low and high grade variants termed respectively spindle cell myxoid liposarcoma and pleomorphic myxoid liposarcoma have been proposed2.
Prognosis is primarily dependent on tumour location. Subcutaneous and intramuscular tumours may recur locally but do not kill. Those in deep central sites, except for conventional atypical lipomatous tumours, recur and are difficult to control1.