====== Intracranial teratoma magnetic resonance imaging ======

{{rss>https://pubmed.ncbi.nlm.nih.gov/rss/search/12ossLvs5ql8o6fUzgaAe12pXhW66Ac5dD8um0-WdpV0aytM5T/?limit=15&utm_campaign=pubmed-2&fc=20240313154724}}
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Primary [[intracranial teratoma]]s are usually localized in the [[pineal]] and the [[suprasellar region]]s, and often present an ovoid or lobulated [[mass]] with or without multilocularity on MRI. Marked [[enhancement]] of the solid portion or the thick wall of the tumor was the key feature for distinguishing [[mature teratoma]] and malignant teratoma
((Liu Z, Lv X, Wang W, An J, Duan F, Feng X, Chen X, Ouyang B, Li S, Singh S, Qiu S. Imaging characteristics of primary intracranial teratoma. Acta Radiol. 2014 Sep;55(7):874-81. doi: 10.1177/0284185113507824. Epub 2013 Oct 8. PMID: 24103916.))
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[[MRI]] has advantages in characterizing the shape, texture, outline, composition, and original position of the tumor, as well as its association with surrounding structures, particularly in enhanced scanning. MRI can identify the original position of the tumor and its invasiveness and subsequently guide surgery
((http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3742749/)).
===== T1 =====

hyperintense components due to fat and proteinaceous/lipid-rich fluid

intermediate components of soft tissue

hypointense components due to calcification and blood products

===== T1 C+ (Gd) =====
solid soft tissue components show enhancement

===== T2 =====
Again mixed signal from differing components.
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Nevertheless, MR imaging does not allow differentiation of [[germinoma]]s from other NGGCTs
((Liang L, Korogi Y, Sugahara T, et al. MRI of intracranial
germ-cell tumours. Neuroradiology 2002;44(5):382–388.))
((Douglas-Akinwande AC, Ying J, Momin Z, Mourad A,
Hattab EM. Diffusion-weighted imaging characteristics
of primary central nervous system germinoma with histopathologic correlation: a retrospective study. Acad Radiol
2009;16(11):1356–1365)).