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==Overview==
==Overview==
There is no classification system established for fibroma. Based on the pathophysiology and location of the tumor, fibroma may be classified into hard fibroma, soft fibroma, angiofibroma, cystic fibroma, chondromyxoid fibroma, desmoplastic fibroma, nonossifying fibroma, ossifying fibroma, nuchal fibroma, collagenous fibroma, fibroma of tendon sheath, perifollicular fibroma, pleomorphic fibroma, uterine fibroma, neurofibroma, and ovarian fibroma.<ref name="wiki">fibroma. Wikipedia(2015) https://en.wikipedia.org/wiki/Fibroma Accessed on February 25, 2016</ref>
There is no classification system established for fibroma. Based on the pathophysiology and location of the tumor, fibroma may be classified into hard fibroma, soft fibroma, [[angiofibroma]], [[cystic fibroma]], [[chondromyxoid fibroma]], [[desmoplastic fibroma]], [[nonossifying fibroma]], [[ossifying fibroma]], nuchal fibroma, [[collagenous fibroma]], fibroma of tendon sheath, perifollicular fibroma, pleomorphic fibroma, [[uterine fibroma]], neurofibroma, and [[ovarian fibroma]].<ref name="wiki">fibroma. Wikipedia(2015) https://en.wikipedia.org/wiki/Fibroma Accessed on February 25, 2016</ref>
==Classification==
==Classification==
Based on the pathophysiology and location of the tumor fibroma may be classified into the following types, which is shown below in a tabular form:<ref name="wiki">fibroma. Wikipedia(2015) https://en.wikipedia.org/wiki/Fibroma Accessed on February 25, 2016</ref>
Based on the pathophysiology and location of the tumor fibroma may be classified into the following types, which is shown below in a tabular form:<ref name="wiki">fibroma. Wikipedia(2015) https://en.wikipedia.org/wiki/Fibroma Accessed on February 25, 2016</ref>
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:Hard Fibroma
:Hard Fibroma
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*The ''hard fibroma'' (''fibroma durum'') consists of many fibers and a few cells, e.g. in the skin it is called ''dermatofibroma'' (''fibroma simplex'' or ''nodulus cutaneous'').  
*The ''hard fibroma'' (''fibroma durum'') consists of many fibers and a few cells, e.g. in the skin it is called ''[[dermatofibroma]]'' (''fibroma simplex'' or ''nodulus cutaneous'').  
*A special form is the ''keloid'', which derives from hyperplastic growth of scars.
*A special form is the ''keloid'', which derives from hyperplastic growth of scars.
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*The ''fibroma cavernosum'' or ''angiofibroma''
*The ''fibroma cavernosum'' or ''angiofibroma''
**It consists of many dilated vessels, it is a vasoactive tumor occurring almost exclusively in adolescent males.
**It consists of many dilated vessels, it is a vasoactive tumor occurring almost exclusively in adolescent males.
*The ''cystic fibroma'' (''fibroma cysticum'')
*The ''[[cystic fibroma]]'' (''fibroma cysticum'')
**It has central softening or dilated lymphatic vessels.
**It has central softening or dilated lymphatic vessels.
*''Myxofibroma''
*''[[Myxofibroma]]''
**The ''myxofibroma'' (''fibroma myxomatodes'') is produced by liquefaction of the underlying soft tissue.
**The ''myxofibroma'' (''fibroma myxomatodes'') is produced by liquefaction of the underlying soft tissue.
*''Cemento-ossifying fibroma''
*''[[Cemento-ossifying fibroma]]''
**The cemento-ossifying fibroma is hard and fibrous, most frequently seen on the jaw or in the mouth, sometimes in connection with a fracture or another type of injury.
**The cemento-ossifying fibroma is hard and fibrous, most frequently seen on the jaw or in the mouth, sometimes in connection with a fracture or another type of injury.
*Other fibromas:
*Other fibromas:
**''Chondromyxoid fibroma''
**''[[Chondromyxoid fibroma]]''
**''Desmoplastic fibroma''
**''[[Desmoplastic fibroma]]''
**''Nonossifying fibroma''
**''[[Nonossifying fibroma]]''
**''Ossifying fibroma''
**''[[Ossifying fibroma]]''
**''Nuchal fibroma''
**''Nuchal fibroma''
**''Collagenous fibroma''
**''[[Collagenous fibroma]]''
**''Fibroma of tendon sheath''
**''Fibroma of tendon sheath''
**''Perifollicular fibroma''
**''Perifollicular fibroma''
**''Pleomorphic fibroma''
**''Pleomorphic fibroma''
**''Uterine fibroma''
**''[[Uterine fibroma]]''
**''Neurofibroma''
**''[[Neurofibroma]]''
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:Ovarian Fibroma
:[[Ovarian Fibroma]]
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*It appears in the sex cord-stromal tumour group of ovarian neoplasms.  
*It appears in the sex cord-stromal tumor group of ovarian neoplasms.  
*Upon gross pathological inspection, ovary fibromas are firm and white or tan.
*Upon gross pathological inspection, ovary fibromas are firm and white or tan.
*Variants with edema are especially likely to be associated with Meigs' syndrome.  
*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).  
*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.
*The presence of an ovarian fibroma can cause ovarian torsion in some cases.
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Revision as of 18:16, 23 March 2016

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Simrat Sarai, M.D. [2]

Overview

There is no classification system established for fibroma. Based on the pathophysiology and location of the tumor, fibroma may be classified into hard fibroma, soft fibroma, angiofibroma, cystic fibroma, chondromyxoid fibroma, desmoplastic fibroma, nonossifying fibroma, ossifying fibroma, nuchal fibroma, collagenous fibroma, fibroma of tendon sheath, perifollicular fibroma, pleomorphic fibroma, uterine fibroma, neurofibroma, and ovarian fibroma.[1]

Classification

Based on the pathophysiology and location of the tumor fibroma may be classified into the following types, which is shown below in a tabular form:[1]

Type of Fibroma Features
Hard Fibroma
  • The hard fibroma (fibroma durum) consists of many fibers and a few cells, e.g. in the 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 fibrous tissue.
  • They mostly appear on the neck, armpits or groin.
Other types of fibroma
Ovarian Fibroma
  • It appears in the sex cord-stromal tumor group of ovarian neoplasms.
  • 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.

References

  1. 1.0 1.1 fibroma. Wikipedia(2015) https://en.wikipedia.org/wiki/Fibroma Accessed on February 25, 2016

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