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nonmalignant tumor of connective tissue

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2013/02/13 01:04:02」(JST)

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Fibroma can also mean uterine fibroids

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.

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, etc.

The Neurofibroma

Ovarian fibroma

Main article: 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

Benign fibromas can be removed or left alone. Removal is usually a brief outpatient procedure.

External links

Wikimedia Commons has media related to: Fibroma

Dermatofibroma
Angiofibroma
Ovarian fibroma HP:3654 at humpath.com

UpToDate Contents

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1. 卵巣の性索間質腫瘍：顆粒膜-間質細胞腫瘍 sex cord stromal tumors of the ovary granulosa stromal cell tumors

English Journal

Malignant mesenchymoma in the nasal cavity of a bull.

Puff C, Kehler W, Baumgartner W, Herden C.SourceDepartment of Pathology, University of Veterinary Medicine, Bunteweg 17, Hannover, Germany. christina.puff@tiho-hannover.de
Journal of comparative pathology.J Comp Pathol.2011 Aug-Oct;145(2-3):148-51. Epub 2011 Feb 8.
A 4-year-old bull was presented with facial distortion and abnormal respiratory noise. Endoscopically, a proliferative mass was found obliterating the left nasal cavity and a tumour was suspected. The head was examined after slaughter and there was a well-circumscribed solid structure (15×12×6 cm)
PMID 21306728

Conventional and diffusion-weighted magnetic resonance imaging findings of benign fibromatous paratesticular tumor: a case report.

Tsili AC, Argyropoulou MI, Giannakis D, Sofikitis N, Tsampoulas K.SourceDepartment of Clinical Radiology, University Hospital of Ioannina, Leoforos S Niarchou, 45500, Ioannina, Greece. a_tsili@yahoo.gr.
Journal of medical case reports.J Med Case Reports.2011 May 3;5:169.
INTRODUCTION: The vast majority of paratesticular masses are benign. Magnetic resonance imaging of the scrotum may provide valuable information in the pre-operative work-up of scrotal masses, by allowing the precise localization of the lesion and helping in characterizing its nature. Diffusion-weigh
PMID 21539739

Japanese Journal

症例整容面に考慮し術後良好な結果が得られた乳腺過誤腫の1例

柴田大,松村一,渡辺克益
外科 72(9), 983-986, 2010-09
NAID 40017265330

イヌのエプーリスに関する臨床病理学的研究

YOSHIDA Kazunori,YANAI Tokuma,IWASAKI Toshiro,SAKAI Hiroki,OHTA Jyoji,KATI Singo,MINAMI Takeo,LACKNER Andrew A.,MASEGI Toshiaki
The journal of veterinary medical science 61(8), 897-902, 1999-08-25
… The incidence of the fibromatous, ossifying, acanthomatous and giant cell epulides were 56.6% (107/189), 23.3% (44/189), 18.0% (34/189) and 2.1 % (4/189), respectively. … The average ages of dogs with fibromatous, ossifying, acanthomatous and giant cell epulides were 8.8, 8.4, 7.8 and 8.7 years, respectively. … The male/female ratio of dogs with the acanthomatous epulis (0.8) was lower than those of dogs with the fibromatous (1.9), ossifying (1.4) and giant cell epulis (3.0). …
NAID 110003920196