Types

 cutaneous fibrous tumors (superficial fibrous tumors)
 deep fibrous tumors

Classification

 Reactive lesions

• hypertrophic scars
• keloid

 Benign neoplasms

• acrochordon (skin tag, soft fibroma)
• storiform collagenoma (sclerotic fibroma)
• myofibroblastic tumors
  • dermatomyofibroma
  • solitary myofibroma
  • infantile myofibromatosis

• giant cell fibroblastoma

• fibromas
  • fibroma of tendon sheath
  • calcifying aponeurotic fibroma

• infantile digital fibromatosis (inclusion body fibromatosis)
• knuckle pad
• Acquired digital fibrokeratoma
• fibrous hamartoma of infancy
• juvenile hyalin fibromatosis
• nodular fasciitis
• proliferative myositis
• elastofibroma
• fibrous hamartoma
• infantile digital fibroma
• sclerosing perineurioma

 Locally aggressive fibrous lesions

• palmar fibromatosis
• plantar fibromatosis
• penile fibromatosis
• desmoid fibromatosis (desmoid fibromas)

 Low-grade malignant lesions

• dermatofibrosarcoma protuberans

 Malignant lesions

• ETV6-NTRK3+ infantile fibrosarcoma
• adult-type fibrosarcoma

See also:

 sclerosing tumors
 fibroblastic tumors
 myofibroblastic tumors