5th edition WHO classification of pediatric soft tissue tumors

Adipocytic tumors
  • Lipomatosis
  • Lipoblastoma/lipoblastomatosis
  • Liposarcoma
Fibroblastic and myofibroblastic tumors
  • Fasciitis
  • Fibrodysplasia ossificans progressiva
  • Fibroma of tendon sheath
  • Gardner fibroma
  • Fibrous hamartoma of infancy
  • Lipofibromatosis
  • Inclusion body infantile digital fibromatosis
  • Juvenile hyaline fibrzomatosis
  • Fibromatosis colli
  • Calcifying aponeurotic fibroma
  • Sinonasal angiofibroma
  • Plantar/palmar fibromatosis
  • Desmoid fibromatosis
  • Infantile fibrosarcoma
  • Giant cell fibroblastoma
  • Low grade fibromyxoid sarcoma
  • Inflammatory myofibroblastic tumor 
Fibrohistiocytic tumors
  • Fibrous histiocytoma
  • Plexiform fibrohistiocytic tumor
  • Tenosynovial giant cell tumor 
Vascular tumors
  • Capillary malformations
  • Venous malformations
  • Arteriovenous malformations
  • Intramuscular vascular anomalies
  • Lymphatic anomalies
  • Congenital hemangioma
  • Infantile hemangioma
  • Hemangioma of placenta
  • Pyogenic granuloma
  • Epithelioid hemangioma
  • Tufted angioma and kaposiform hemangioendothelioma
  • Papillary intralymphatic angioendothelioma
  • Pseudomyogenic hemangioendothelioma
  • Kaposi sarcoma
  • Epithelioid hemangioendothelioma
  • Angiosarcoma 
Perivascular tumors
  • Myofibroma and myopericytoma
  • Glomus tumor and glomuvenous malformation 
Smooth muscle tumors
  • EBV associated smooth muscle tumor 
Skeletal muscle tumors
  • Rhabdomyoma 
  • Rhabdomyosarcoma
  • Ectomesenchymoma 
Gastrointestinal stromal tumor 
  • Pediatric GIST
Peripheral nerve sheath tumors
  • Schwannoma 
  • Neurofibroma
  • Perineurioma 
  • Hybrid nerve sheath tumor
  • Granular cell tumor 
  • Solitary circumscribed neuroma
  • Ectopic meningioma and meningothelial hamartoma
  • Benign triton tumor/neuromuscular choristoma
  • Malignant peripheral nerve sheath tumor
Tumors of uncertain differentiation
  • Intramuscular / juxta-articular myxoma
  • Superficial angiomyxoma
  • Deep angiomyxoma 
  • Angiomatoid fibrous histiocytoma
  • Clear cell sarcoma of soft tissue
  • Alveolar soft part sarcoma
  • Synovial sarcoma
  • Epithelioid sarcoma
  • Desmoplastic small round cell tumor