Classification

 Reactive lesions

• hypertrophic scars
• keloid
• nodular fasciitis
• proliferative myositis
• elastofibroma

 Benign neoplasms

• acrochordon (skin tag, soft fibroma)
• dermatomyofibroma
• storiform collagenoma (sclerotic fibroma)
• solitary myofibroma
• giant cell fibroblastoma
• fibroma of tendon sheath
• infantile digital fibromatosis (inclusion body fibromatosis)
• calcifying aponeurotic fibroma
• knuckle pad
• Acquired digital fibrokeratoma
• Infantile myofibromatosis
• Fibrous hamartoma of infancy
• Juvenile hyalin fibromatosis

 Locally aggressive fibrous lesions

• palmar fibromatosis
• plantar fibromatosis
• penile fibromatosis
• desmoid fibromatosis

 Low-grade malignant lesions

• dermatofibrosarcoma protuberans

 Malignant lesions

• adult-type fibrosarcoma
• infantile fibrosarcoma