Fibroma MRI

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Maneesha Nandimandalam, M.B.B.S.[2], Simrat Sarai, M.D. [3]


MRI may be helpful in the diagnosis of fibroma. On MRI, fibromas appear isointense or hypointense on T1 sequences and hyperintense on T2 sequences.

MRI Findings

MRI findings of ovarian fibroma include the following:[1][2][3][4][5][6]

MRI component Features
  • Fibromas usually demonstrate homogeneous low signal intensity
  • Fibromas appear as well-circumscribed masses with low signal intensity
  • May contain scattered hyperintense areas representing edema or cystic degeneration
  • A band of T2 hypointensity separating the tumor from the uterus on all imaging planes is also considered a characteristic feature
T1 contrast + gadolinium

Non-ossifying Fibroma

  • MRI appearances of non-ossifying fibroma are variable and depends on when along the development and healing phase the lesion is imaged. Initially, the lesion has high or intermediate T2 signal, with a peripheral low signal rim corresponding to the sclerotic border. As it matures and begins to ossify, the signal becomes low on all sequences.
  • Contrast enhancement is also variable.[7][8]

Ossifying Fibroma

  • MRI findings of ossifying fibroma includes the following:[9][10][11][12][13][14]
    • T1: low signal
    • T2: iso-high signal
    • T1 C+ (Gd): typically shows enhancement

Chondromyxoid Fibroma

  • MRI features of chondromyxoid fibromas are often not particularly specific. Signal characteristics include the following:[15][16][17][18][19]
    • T1: low signal
    • T1 C+ (Gd)
    • T2: high signal

Desmoplastic Fibroma

  • There is considerable overlap with other bony lesions on MRI appearances of desmoplastic fibroma. Signal characteristics include the following:[20][21][22][23]
    • T1: typically low signal
    • T2: has background intermediate to high signal with intrinsic low to intermediate intensity foci within 7
    • T1 C+ (Gd): often shows heterogeneous enhancement

Cardiac Fibromas

  • Because of their dense, fibrous nature, the tumors are usually homogeneous and hypointense on T2-weighted MR images and isointense relative to muscle on T1-weighted images. Cardiac fibroma often demonstrate little or no contrast material enhancement.

Pleural Fibromas

Cemento-ossifying Fibroma

  • Although cemento-ossifying fibroma are composed of a mixture of calcified and noncalcified soft-tissue, as the later is predominantly fibrous, the whole mass is largely of low intensity on MRI.[27][28][29]
    • T1:
      • Intermediate to low signal
      • Focal regions of higher signal may represent fatty marrow in ossified components
    • T2:
      • Low signal
    • T1 C+ (Gd)

Uterine Fibromas

  • MRI is not generally required for diagnosis, except for complex or problem-solving cases. It is, however, the most accurate modality for detecting, localizing and characterising fibroids. Size, location and signal intensity should be noted. Signal characteristics are variable and include the following:[30][31][32][33][34][35][36]
    • T1
      • Non-degenerated fibroids and calcification appear as low to intermediate signal intensity compared with the normal myometrium
      • Characteristic high signal intensity on T1 weighted images/an irregular, T1 hyperintense rim around a centrally located myoma suggests red degeneration, which is caused by venous thrombosis
    • T2
      • Non-degenerated fibroids and calcification appear as low signal intensity
      • As they are usually hypervascular, flow voids are often observed around them
      • Fibroids that have undergone cystic degeneration/necrosis can have a variable appearance, usually appearing high signal on T2 sequences.
      • Hyaline degeneration is demonstrated as low T2 signal intensity
      • Cystic degeneration, which is an advanced stage of intratumoral edema, also shows high signal intensity on T2 weighted images and does not enhance
    • T1 C+ (Gd)
      • Variable enhancement is seen with contrast administration
      • Marked high signal intensity with gradual enhancement suggests myxoid degeneration


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  2. J. Ueda, T. Furukawa, K. Higashino, K. Ueda, S. Kobayashi, K. Shimura, T. Tsujimura & Y. Araki (1998). "Ovarian fibroma of high signal intensity on T2-weighted MR image". Abdominal imaging. 23 (6): 657–658. PMID 9922206. Unknown parameter |month= ignored (help)
  3. Troiano, R N; Lazzarini, K M; Scoutt, L M; Lange, R C; Flynn, S D; McCarthy, S (1997). "Fibroma and fibrothecoma of the ovary: MR imaging findings". Radiology. 204 (3): 795–798. doi:10.1148/radiology.204.3.9280262. ISSN 0033-8419.
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  7. Katchy, AmechiUchenna; Eyesan, SamuelUwale; Idowu, OlukayodeOluseyi; Adesina, StephenAdesope; Ayandele, BabajideOladayo; Ano-Edward, U (2018). "Non-ossifying fibroma of the right clavicle". Nigerian Postgraduate Medical Journal. 25 (2): 126. doi:10.4103/npmj.npmj_60_18. ISSN 1117-1936.
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  13. Chaudhari, Swapnali; Umarji, Hemant R. (2011). "Peripheral Ossifying Fibroma in the Oral Cavity: MRI Findings". Case Reports in Dentistry. 2011: 1–3. doi:10.1155/2011/190592. ISSN 2090-6447.
  14. Salina, Andrea Carolina Inacio; Souza, Pedro Mansueto Melo de; Gadelha, Camila Maria da Costa; Aguiar, Lindenberg Barbosa; Castro, José Daniel Vieira de; Barreto, André Rodrigues Façanha (2017). "Ossifying fibroma: an uncommon differential diagnosis for T2-hypointense sinonasal masses". Radiology Case Reports. 12 (2): 313–317. doi:10.1016/j.radcr.2017.03.019. ISSN 1930-0433.
  15. Cappelle, Sarah; Pans, Steven; Sciot, Raf (2016). "Imaging features of chondromyxoid fibroma: report of 15 cases and literature review". The British Journal of Radiology. 89 (1064): 20160088. doi:10.1259/bjr.20160088. ISSN 0007-1285.
  16. Shen, Shuai; Chen, Miao; Jug, Rachel; Yu, Cheng-Qian; Zhang, Wan-Lin; Yang, Lian-He; Wang, Liang; Yu, Juan-Han; Lin, Xu-Yong; Xu, Hong-Tao; Ma, Shuang (2017). "Radiological presentation of chondromyxoid fibroma in the sellar region". Medicine. 96 (49): e9049. doi:10.1097/MD.0000000000009049. ISSN 0025-7974.
  17. Oh, Noeun; Khorsandi, Azita S.; Scherl, Sophie; Wang, Beverly; Wenig, Bruce M.; Manolidis, Spiros; Jacobson, Adam (2019). "Chondromyxoid Fibroma of the Mastoid Portion of the Temporal Bone: MRI and PET/CT Findings and Their Correlation with Histology". Ear, Nose & Throat Journal. 92 (4): 201–203. doi:10.1177/014556131309200412. ISSN 0145-5613.
  18. Kim, Hyun-Soo; Jee, Won-Hee; Ryu, Kyung-Nam; Cho, Kil-Ho; Suh, Jin-Suck; Cho, Jae-Hyun; Choi, Yun-Sun; Lee, Sung Moon; Lee, Jong-Min; Sung, Mi Sook; Kim, Jee Young; Jung, Eun Sun; Chung, Yang-Guk; Ok, In-Young (2011). "MRI of chondromyxoid fibroma". Acta Radiologica. 52 (8): 875–880. doi:10.1258/ar.2011.110180. ISSN 0284-1851.
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  21. Kim, Ok Hwa; Kim, Seon Jeong; Kim, Ji Yeon; Ryu, Ji Hwa; Choo, Hye Jung; Lee, Sun Joo; Lee, In Sook; Suh, Kyung Jin (2013). "Desmoplastic Fibroma of Bone in a Toe: Radiographic and MRI Findings". Korean Journal of Radiology. 14 (6): 963. doi:10.3348/kjr.2013.14.6.963. ISSN 1229-6929.
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