MDM2 and liposarcoma: This issue has been extensively discussed in the literature [7,8,9,10], and a case has been reported very recently by Saldana et al. [11] in which the amplification in FISH of the MDM2 gene was described for the first time in a lesion of a 73-year-old subject, which had led, in the first instance, to hypothesize a liposarcoma.