Table 2.
Histological subtypes.
| Mahmoud et al. [7] | Andrä et al. [8] | González-González et al. [9]∗ | Vitzthum et al. [10]∗ | Tejani et al.[6] | Penel et al. [11]∗ | Sidappa and Krishnamurthy [12] | Park et al. [13] | Total | |
|---|---|---|---|---|---|---|---|---|---|
| Alveolar soft part sarcoma | — | — | — | — | 1 | — | — | 3 | 4 |
| Angiosarcoma | — | 9 | — | 14 | 4 | 5 | — | 15 | 47 |
| Carcinosarcoma | — | — | — | — | 1 | — | — | — | 1 |
| Chondrosarcoma | — | — | — | — | — | — | — | 8 | 8 |
| DFSP▪ | — | — | — | 1 | — | — | 16 | 17 | |
| Epithelioid sarcoma | — | — | — | — | 1 | 1 | — | — | 2 |
| Ewing's sarcoma/PNET◊ | — | — | — | — | — | — | — | 4 | 4 |
| Fibrosarcoma/fibromatous sarcoma○ | 125 | — | — | — | 1 | 2 | 1 | 7 | 136 |
| Histiocytic sarcoma | — | — | — | — | 1 | — | — | — | 1 |
| Leiomyosarcoma | 76 | — | — | 5 | 3 | — | 1 | 4 | 89 |
| Lipomatous sarcoma∆ | 31 | — | — | 3 | 4 | — | — | 10 | 48 |
| Low-grade fibromyxoid sarcoma | — | — | — | — | — | — | — | 2 | 2 |
| MFH/undiff. pleo./UPS∞ | — | 5 | — | 9 | — | 2 | 6 | 3 | 25 |
| Neurofibromatous sarcoma□ | 46 | — | 9 | 1 | — | — | 5 | — | 61 |
| Osteosarcoma | — | — | — | — | — | — | — | 5 | 5 |
| Others• | — | 8 | — | 3 | — | — | — | 5 | 16 |
| Peripheral neuroectodermic tumour | — | — | — | — | — | 3 | — | — | 3 |
| Rhabdomyosarcoma | — | — | 7 | 1 | 5 | 7 | — | 24 | 44 |
| Spindle cell | — | — | — | 4 | 3 | — | 10 | 9 | 26 |
| Synovial sarcoma | 34 | 4 | — | 6 | 6 | 2 | 1 | 7 | 60 |
| Uncommon sarcoma subtypes† | 139 | — | — | — | — | — | 2 | — | 141 |
| Undifferentiated sarcoma | — | — | — | — | — | 3 | — | — | 3 |
| Unidentified sarcoma♦ | 215 | — | — | — | — | — | — | — | 215 |
| Vascular sarcoma‡ | 122 | — | — | 2 | — | — | 1 | — | 125 |
∗Not all of the histological subtypes were reported. ▪Dermatofibrosarcoma protuberans. ◊Primitive neuroectodermal tumour. ○Including fibrosarcoma NOS, fibromyxoma, and fibrous histiocytoma. ∆Including myxosarcoma, angiomyxoma, atypical lipoma, liposarcoma NOS, fibromyxolipoma, myxoid, round cell, pleomorphic, mixed, and dedifferentiated liposarcoma, and spindle cell lipoma. ∞MFH = malignant fibrous histiocytoma, undiff. pleo. = undifferentiated pleomorphic sarcoma. UPS = unclassified pleomorphic sarcoma. □Including neurosarcoma and malignant peripheral nerve sheath tumour. •Andrä et al. [8], not otherwise specified; Vitzthum et al. [10], dendritic cell sarcoma, chordoma, and hemangioengothelioma; Park et al. [13], folicular dendritic cell sarcoma and teratocarcinosarcoma. †Including clear cell, dermatofibrosarcoma, rhabdomyosarcoma, epithelioid, desmoplastic small round cell tumour, fascial, infantile, angiomatoid, fibrous histiocytoma, rhabdoid, giant cell tumour of soft part, and alveolar soft part. ♦Sarcomatosis not otherwise specified (NOS), spindle cell, giant cell, small cell, and undifferentiated sarcoma. ‡Including hemangiosarcoma, malignant hemangioendothelioma, epithelioid hemangioendothelioma, malignant hemangiopericytoma, hemangiopericytoma, and lymphangiosarcoma.