Fibroma

Fibroma
Soft fibroma (fibroma molle)
Classification and external resources
ICD-O	M8810/0
MeSH	D005350
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Fibromas (or fibroid tumors or fibroids) are benign tumors that are composed of fibrous or connective tissue. They can grow in all organs, arising from mesenchyme tissue. The term "fibroblastic" or "fibromatous" is used to describe tumors of the fibrous connective tissue. When the term fibroma is used without modifier, it is usually considered benign, with the term fibrosarcoma reserved for malignant tumors.

The hard fibroma (fibroma durum) consists of many fibres and few cells, e.g. in skin it is called dermatofibroma (fibroma simplex or nodulus cutaneous). A special form is the keloid, which derives from hyperplastic growth of scars.

The soft fibroma (fibroma molle) or fibroma with a shaft (acrochordon, skin tag, fibroma pendulans) consist of many loosely connected cells and less fibroid tissue. It mostly appears at the neck, armpits or groin. The photo shows a soft fibroma of the eyelid.

The fibroma cavernosum or angiofibroma, consists of many often dilated vessels, it is a vasoactive tumor occurring almost exclusively in adolescent males.

The cystic fibroma (fibroma cysticum) has central softening or dilated lymphatic vessels.

The myxofibroma (fibroma myxomatodes) is produced by liquefaction of the underlying soft tissue.

The cemento-ossifying fibroma is hard and fibrous, most frequently seen in the jaw or mouth, sometimes in connection with a fracture or another type of injury.

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