Double diagnostic deviance: Case report of chest wall liposarcoma mimicking inflammatory myofibroblastic tumor mimicking costochondritis.

Inflammatory myofibroblastic tumor and liposarcoma very rarely present as tumors of the chest wall. Never have both been reported together in the same lesion. We present a case wherein a 72-year-old man with a rapidly progressing lesion initially mistaken for a local infection underwent resection with diagnosis of inflammatory myofibroblastic tumor. He experienced recurrence less than 6 months before radical resection revealed well to dedifferentiated liposarcoma with areas of inflammatory myofibroblastic tumor. He is now doing well with over 4 years of follow-up.