Astrocytoma MRI: Difference between revisions

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Revision as of 14:55, 4 January 2019

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Ammu Susheela, M.D. [2]

MRI may be helpful in the diagnosis of astrocytoma. Findings on MRI suggestive of astrocytoma include:^[1]

Low grade astrocytoma (pilocytic and diffuse astrocytoma)
- T1: Decreased resonance in comparison to surrounding brain tissue
- T2: Increased resonance in comparison to surrounding brain tissue
High grade astrocytoma
- Anaplastic astrocytomas
  - Hypointense T1
  - Hyperintense T2
  - There might be some contrast enhancement and edema
- Glioblastoma multiform
  - Irregular ring-nodular enhancing lesions
  - Central necrosis
  - Surrounding vasogenic edema

↑ Sathornsumetee S, Rich JN, Reardon DA (November 2007). "Diagnosis and treatment of high-grade astrocytoma". Neurol Clin. 25 (4): 1111–39, x. doi:10.1016/j.ncl.2007.07.004. PMID 17964028.
↑ Case courtesy of A.Prof Frank Gaillard, <a href="https://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="https://radiopaedia.org/cases/8474">rID: 8474</a>
↑ Case courtesy of Dr Bruno Di Muzio, <a href="https://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="https://radiopaedia.org/cases/41396">rID: 41396</a>
↑ Case courtesy of Dr Bruno Di Muzio, <a href="https://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="https://radiopaedia.org/cases/39124">rID: 39124</a>
↑ Case courtesy of A.Prof Frank Gaillard, <a href="https://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="https://radiopaedia.org/cases/2589">rID: 2589</a>

@@ Line 5: / Line 5: @@
 ==MRI==
-MRI may be helpful in the diagnosis of astrocytoma. Findings on MRI suggestive of astrocytoma include:
+MRI may be helpful in the diagnosis of astrocytoma. Findings on MRI suggestive of astrocytoma include:<ref name="pmid17964028">{{cite journal |vauthors=Sathornsumetee S, Rich JN, Reardon DA |title=Diagnosis and treatment of high-grade astrocytoma |journal=Neurol Clin |volume=25 |issue=4 |pages=1111–39, x |date=November 2007 |pmid=17964028 |doi=10.1016/j.ncl.2007.07.004 |url=}}</ref>
 * Low grade astrocytoma (pilocytic and diffuse astrocytoma)
 ** T1: Decreased resonance in comparison to surrounding brain tissue