Myxoid neoplasms

• intramuscular myxoma
• ganglion cyst
• soft tissue perineurioma
• myxofibrosarcoma
• low grade fibromyxoid sarcoma
• myxoid liposarcoma
• lipoblastoma
• myxofibrosarcoma-like dedifferentiated liposarcoma
• myxoinflammatory fibroblastic sarcoma
• chordoma
• extraskeletal myxoid chondrosarcoma

Spindle cell neoplasms

• leiomyosarcoma
• schwannoma
• MPNST
• synovial sarcoma
• solitary fibrous tumor
• fibromatosis
• nodular fasciitis
• DFSP
• inflammatory myofibroblastic tumor
• hemangiopericytoma
• fibrosarcoma

Fibrohistiocytic neoplasms

• tenosynovial giant cell tumor
• angiomatoid fibrous histiocytoma

Round cell neoplasms

• neuroblastoma
• Ewing sarcoma
• desmoplastic small round cell tumor
• embryonal rhabdomyosarcoma
• alveolar rhabdomyosarcoma
• extraskeletal mesenchymal chondrosarcoma
• BCC

Epithelioid neoplasms

• epithelioid sarcoma
• clear cell sarcoma
• alveolar soft part sarcoma
• epithelioid hemangioendothelioma
• epithelioid angiosarcoma
• granular cell tumor

Pleomorphic neoplasms

• undifferentiated pleomorphic sarcoma
• pleomorphic rhabdomyosarcoma

Dedifferentiated sarcoma

Non-neoplastic

• epidermal inclusion cyst
• fat necrosis
• idiopathic retroperitoneal fibrosis
• elastofibroma
• amyloidoma

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