Table 2 Histological diagnoses for the 136 soft-tissue masses

Benign lesions

24 lipomas^a

1 elastofibroma

1 hibernoma

1 spindle-cell lipoma

5 desmoid tumors

5 hemangiomas

5 schwannomas

6 old hematomas

4 nodular fasciitis

4 solitary fibrous tumors

4 villonodular synovitis^b

4 benign nerve sheath tumors

3 non-diagnostic benign-appearing fibrous tissue

3 myxomas

2 chronic abscesses

2 circumscribed ossifying myositis

2 neurofibromas

1 benign myxoid tumor

1 Dupuytren’s disease

1 Ledderhose disease

1 tenosynovitis

1 ulcerated synovitis

Malignant lesions

8 atypical lipomatous tumors

1 dedifferentiated liposarcoma

1 myxoid liposarcoma

5 synovial sarcomas^b

2 leiomyosarcomas (grade 2 and 3)

3 dedifferentiated pleomorphic sarcomas (2 grade 3, 1 grade 2)

3 epithelioid sarcomas

3 lymphomas (B and Hodgkin)

3 myxofibrosarcomas (2 grade 1 and 1 grade 3)

2 chondrosarcomas (recurrences)

2 extraskeletal myxoid chondrosarcomas

2 Ewing sarcomas (extraskeletal sites)

2 kaposi sarcomas

1 alveolar soft-tissue sarcoma

1 extraosseous ewing sarcomas

1 malignant solitary fibrous tumor

1 myxofibrosarcoma (grade 2)

1 myxoinflammatory fibroblastic sarcoma

1 osteosarcoma (recurrence)

1 pleomorphic hyalinizing angiectatic tumor

1 superficial CD34-positive fibroblastic tumor

8 metastasis (leiomysarcomas, Ewing sarcoma, chondrosarcomas, 2 melanoma, sarcoma, papillary thyroid carcinoma, pulmonary adecarcinoma)