Pathology: fibroblastic and myofibroblastic tumours

Benign

Nodular fasciitis

Proliferative fasciitis and proliferative myositis 

Myositis ossificans and fibro-osseous pseudotumour of digits

Ischaemic fasciitis

Elastofibroma

Fibrous hamartoma of infancy

Fibromatosis colli

Juvenile hyaline fibromatosis

Inclusion body fibromatosis

Fibroma of tendon sheath

Desmoplastic fibroblastoma

Myofibroblastoma

Calcifying aponeurotic fibroma 

EWSR1::SMAD3 - positive fibroblastic tumour

Angiomyofibroblastoma

Cellular angiofibroma

Angiofibroma of soft tissue

Nuchal-type fibroma

Acral fibromyxoma

Gardner fibroma

Intermediate (locally aggressive)

Palmar / Plantar fibromatosis

Desmoid fibromatosis

Lipofibromatosis

Giant cell fibroblastoma

Intermediate (rarely metastasizing)

Dermatofibrosarcoma protuberans

Solitary fibrous tumour

Inflammatory myofibroblastic tumour

Myofibroblastic sarcoma

Superficial CD34-positive fibroblastic tumour

Myxoinflammatory fibroblastic sarcoma

Infantile fibrosarcoma

Malignant

Adult fibrosarcoma

Myxofibrosarcoma

Low-grade fibromyxoid sarcoma

Sclerosing epithelioid fibrosarcoma

Pending consideration as a distinct entity

Acral FibroChondroMyxoid Tumour (emerging)

Calcifying fibrous tumour

Plexiform myofibroblastoma (emerging)

PRRX1-rearranged fibroblastic tumour (emerging)