Recurrent Extraskeletal Osteosarcoma

Reemergence of extraskeletal myxoid chondrosarcoma after a period of remission

Reemergence of extra-osseous Ewing sarcoma after a period of remission.

The reemergence of an extrahepatic bile duct carcinoma after a period of remission.

The reemergence of a small round cell tumor with or without neural differentiation after a period of remission.

Ewing sarcoma which has recurred after treatment and/or remission. While initial complete responses are not uncommon, there is a fair chance of…

An esophageal squamous cell carcinoma which has reappeared after a period of remission or after presumed treatment.