Hard fibroma 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.
Soft fibroma 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.
Other types of fibroma 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. Other fibromas:
chondromyxoid fibroma,
desmoplasmic fibroma,
nonossifying fibroma,
ossifying fibroma,
nuchal fibroma,
collagenous fibroma,
fibroma of tendon sheath, perifollicular fibroma, pleomorphic fibroma,
uterine fibroma,
Gardner fibroma, etc. The
neurofibroma is a benign nerve-sheath tumor in the peripheral nervous system.
Ovarian fibroma It appears in the
sex cord-stromal tumour group of
ovarian neoplasms. Ovary fibromas are most frequent during
middle age, and rare in
children. Upon gross
pathological inspection, ovary fibromas are firm and white or tan. Variants with
edema are especially likely to be associated with
Meigs' syndrome. On
microscopic examination, there are intersecting bundles of spindle cells producing
collagen. There may be
thecomatous areas (
fibrothecoma). The presence of an ovarian fibroma can cause
ovarian torsion in some cases. == Treatment ==