Intracranial teratoma magnetic resonance imaging

• A Rare Presentation of Ruptured Pineal Region Teratoma with Postoperative Aseptic Meningitis
• Primary intracranial immature teratoma in an adult woman: case report and literature review
• Mature hyperdense teratomas in the posterior fossa
• Intracranial Off-Midline Mature Teratoma and Pneumosinus Dilatans: A Unique Clinical Report
• Mature teratoma with a germinoma component presenting with undetectable placental alkaline phosphatase in cerebrospinal fluid: illustrative case
• Endoscopic-assisted removal of a nasofrontal dermoid cyst with intracranial extradural extension
• Fully endoscopic neurosurgery using a two-handed technique for cerebellopontine angle tumors via the retrosigmoid approach
• Congenital intracranial immature teratoma in a preterm infant: illustrative case

Primary intracranial teratomas are usually localized in the pineal and the suprasellar regions, 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 ¹⁾

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 ²⁾.

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

intermediate components of soft tissue

hypointense components due to calcification and blood products

solid soft tissue components show enhancement

Again mixed signal from differing components.

Nevertheless, MR imaging does not allow differentiation of germinomas from other NGGCTs ^{3) 4)}.