Fibroma CT: Difference between revisions
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==CT Findings== | ==CT Findings== | ||
===Ossifying Fibroma=== | ===Ossifying Fibroma=== | ||
Findings on CT scan of ossifying fibroma includes the following:<ref name=" | Findings on CT scan of ossifying fibroma includes the following:<ref name="KawaguchiKato2018">{{cite journal|last1=Kawaguchi|first1=Masaya|last2=Kato|first2=Hiroki|last3=Miyazaki|first3=Tatsuhiko|last4=Kato|first4=Keizo|last5=Hatakeyama|first5=Daijiro|last6=Mizuta|first6=Keisuke|last7=Aoki|first7=Mitsuhiro|last8=Matsuo|first8=Masayuki|title=CT and MR imaging characteristics of histological subtypes of head and neck ossifying fibroma|journal=Dentomaxillofacial Radiology|volume=47|issue=6|year=2018|pages=20180085|issn=0250-832X|doi=10.1259/dmfr.20180085}}</ref><ref name="OwoshoHughes2015">{{cite journal|last1=Owosho|first1=Adepitan A.|last2=Hughes|first2=Marion A.|last3=Prasad|first3=Joanne L.|last4=Potluri|first4=Anitha|last5=Costello|first5=Bernard J.|last6=Branstetter|first6=Barton F.|title=Is Computed Tomography an Adequate Imaging Modality for the Evaluation of Juvenile Ossifying Fibroma? A Comparison of 2 Imaging Modalities (Computed Tomography and Magnetic Resonance Imaging)|journal=Journal of Oral and Maxillofacial Surgery|volume=73|issue=7|year=2015|pages=1304–1313|issn=02782391|doi=10.1016/j.joms.2015.01.013}}</ref><ref name="YangWang2012">{{cite journal|last1=Yang|first1=B.T.|last2=Wang|first2=Y.Z.|last3=Wang|first3=X.Y.|last4=Wang|first4=Z.C.|title=Imaging study of ossifying fibroma with associated aneurysmal bone cyst in the paranasal sinus|journal=European Journal of Radiology|volume=81|issue=11|year=2012|pages=3450–3455|issn=0720048X|doi=10.1016/j.ejrad.2012.05.010}}</ref> | ||
*Seen as a well-circumscribed lesion | *Seen as a well-circumscribed lesion | ||
*Demonstrates evidence of intracortical osteolysis with a characteristic sclerotic band (osteoblastic rimming) | *Demonstrates evidence of intracortical osteolysis with a characteristic sclerotic band (osteoblastic rimming) | ||
*Moderate cortical expansion | *Moderate cortical expansion | ||
===Non-ossifying Fibroma=== | ===Non-ossifying Fibroma=== | ||
*Non-ossifying fibromas are typically sharply demarcated, asymmetrical, cortically based lucencies with a thin sclerotic rim.<ref name="radio"> Fibroma. Radiopedia(2015) http://radiopaedia.org/articles/non-ossifying-fibroma-1 Accessed on March 12, 2016</ref> | *Non-ossifying fibromas are typically sharply demarcated, asymmetrical, cortically based lucencies with a thin sclerotic rim.<ref name="radio"> Fibroma. Radiopedia(2015) http://radiopaedia.org/articles/non-ossifying-fibroma-1 Accessed on March 12, 2016</ref> | ||
Revision as of 18:36, 10 June 2019
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Fibroma Microchapters |
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Diagnosis |
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Treatment |
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Case Studies |
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Fibroma CT On the Web |
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American Roentgen Ray Society Images of Fibroma CT |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Simrat Sarai, M.D. [2]
Overview
CT scan may be helpful in the diagnosis of fibroma. Findings on x-ray suggestive of a particular fibroma depends on the type of the fibroma. Findings on CT scan of ossifying fibroma include a well-circumscribed lesion, intracortical osteolysis with a characteristic sclerotic band, and moderate cortical expansion. Findings on CT scan of non- ossifying fibroma include sharply demarcated, asymmetrical, cortically based lucencies with a thin sclerotic rim. Findings on CT scan of chondromyxoid fibroma include a mild cortical expansion and characteristic lack of mineralization within chondromyxoid fibroma. Findings on CT scan of cemento-ossifying fibroma include a well circumscribed masses which expand the underlying bone.[1][1][1][1]
CT Findings
Ossifying Fibroma
Findings on CT scan of ossifying fibroma includes the following:[2][3][4]
- Seen as a well-circumscribed lesion
- Demonstrates evidence of intracortical osteolysis with a characteristic sclerotic band (osteoblastic rimming)
- Moderate cortical expansion
Non-ossifying Fibroma
- Non-ossifying fibromas are typically sharply demarcated, asymmetrical, cortically based lucencies with a thin sclerotic rim.[1]
- They often appear multiloculated.
- They are located in the metaphysis, adjacent to the physis. However, as the patient ages, they seem to migrate away from the growth plate.
- They have no associated periosteal reaction, cortical breach or associated soft tissue mass.
Ovarian Fibromas
- Fibromas usually manifest as diffuse, slightly hypoattenuating masses with poor, very slow contrast enhancement. Calcification and bilaterality are both uncommon.[1]
Pleural Fibromas
- Tends to have soft tissue attenuation on unenhanced scans and show relatively homogenous intense background enhancement on contrast enhanced scans.[1]
- Non-enhancing areas may be present corresponding to necrosis, myxoid degeneration, or haemorrhage within the tumour. A pedicular attachment may also be seen.
Cardiac Fibromas
- At CT, cardiac fibromas are homogeneous soft-tissue masses that are usually sharply marginated, but also can be infiltrative. Dystrophic calcification is common.[1]
Chondromyxoid Fibroma
- On computed tomography (CT), mild cortical expansion may be observed, and the lesions have a density greater than fluid throughout.[1]
- CT scans also exhibit characteristic lack of mineralization within chondromyxoid fibromas.
Cemento-ossifying Fibroma
- Cemento-ossifying fibromas are usually well circumscribed masses which expand the underlying bone.[1]
- They are usually small, but can become large. This is particularly the case when they arise from the maxilla or paranasal sinuses because there is more room to expand.
- They are initially lucent on x-ray with soft tissue attenuation on CT. As they mature, they gradually develop increasing amounts of calcification/ossification as they mature.
- They usually expand the bone without cortical breach.
- Following administration of contrast, the soft tissue component usually enhances on CT.
Uterine Fibroma
- On CT scans, fibromas are usually of soft tissue density but may exhibit coarse peripheral or central calcification.
- They may distort the usually smooth uterine contour
- Enhancement pattern is variable
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 Fibroma. Radiopedia(2015) http://radiopaedia.org/articles/ossifying-fibroma Accessed on March 12, 2016
- ↑ Kawaguchi, Masaya; Kato, Hiroki; Miyazaki, Tatsuhiko; Kato, Keizo; Hatakeyama, Daijiro; Mizuta, Keisuke; Aoki, Mitsuhiro; Matsuo, Masayuki (2018). "CT and MR imaging characteristics of histological subtypes of head and neck ossifying fibroma". Dentomaxillofacial Radiology. 47 (6): 20180085. doi:10.1259/dmfr.20180085. ISSN 0250-832X.
- ↑ Owosho, Adepitan A.; Hughes, Marion A.; Prasad, Joanne L.; Potluri, Anitha; Costello, Bernard J.; Branstetter, Barton F. (2015). "Is Computed Tomography an Adequate Imaging Modality for the Evaluation of Juvenile Ossifying Fibroma? A Comparison of 2 Imaging Modalities (Computed Tomography and Magnetic Resonance Imaging)". Journal of Oral and Maxillofacial Surgery. 73 (7): 1304–1313. doi:10.1016/j.joms.2015.01.013. ISSN 0278-2391.
- ↑ Yang, B.T.; Wang, Y.Z.; Wang, X.Y.; Wang, Z.C. (2012). "Imaging study of ossifying fibroma with associated aneurysmal bone cyst in the paranasal sinus". European Journal of Radiology. 81 (11): 3450–3455. doi:10.1016/j.ejrad.2012.05.010. ISSN 0720-048X.