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Table 2 Summary of World Health Organization (WHO) classification of soft tissue tumors of the neck

From: Giant cell angiofibroma misdiagnosed as a vascular malformation and treated with absolute alcohol for one year: a case report and review of the literature

Histologic type

Benign

Intermediate, locally aggressive

Intermediate, rarely metastasizing

Malignant

Adipocytic

Lipoma and its variants (lipoblastoma, hibernoma, lipomatosis)

Atypical lipomatous tumor, well-differentiated liposarcoma

Liposarcoma

Fibroblastic/myofibroblastic

Fibromatosis colli, myofibroma, giant cell angiofibroma

Desmoid-type fibromatosis

Solitary fibrous tumor hemangio-pericytoma, inflammatory myofibroblastic tumor (inflammatory pseudotumor)

Fibrosarcoma

So-called fibrohistiocytic

Benign fibrous histiocytoma, diffuse-type giant cell tumor (pigmented villonodular synovitis)

Giant cell tumor of soft tissues

Malignant fibrous histiocytoma (undifferentiated pleomorphic sarcoma)

Skeletal muscle

Rhabdomyoma

Rhabdomyosarcoma

Smooth muscle

Leiomyoma, angioleiomyoma

Leiomyosarcoma

Vascular

Hemangioma, lymphangioma

Kaposiform hemangioendothelioma

Kaposi sarcoma

Angiosarcoma

Perivascular

Glomus tumor, myopericytoma

Malignant glomus tumor

Chondro-osseous

Soft tissue chondroma

Mesenchymal chondrosarcoma, extraskeletal osteosarcoma

Uncertain differentiation

Myxoma

Ossifying fibro-myxoid tumor

Synovial sarcoma, alveolar soft part sarcoma, primitive neuroectodermal tumor, Ewing sarcoma

  1. Source- Reference [19].