Oligodendroglioma other imaging findings: Difference between revisions
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Image:MR perfusion oligodendroglioma 2.jpg|MR perfusion of the brain.<ref name=radiopaediamrp>Image courtesy of Dr.Dr Frank Gaillard. Radiopaedia (original file [http://radiopaedia.org/cases/oligodendroglioma-2 here]). Creative Commons BY-SA-NC</ref> | |||
===Positron Emission Tomography=== | ===Positron Emission Tomography=== | ||
Revision as of 20:13, 13 October 2015
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Sujit Routray, M.D. [2]
Overview
Other Imaging Findings
Other imaging studies for oligodendroglioma include:[1][2]
Magnetic Resonance Spectroscopy
- N-acetyl aspartate (NAA) peak is dominant
- Choline-to-creatine ratio of less than 3:1
- Reduction of NAA/creatine ratio
Magnetic Resonance Perfusion
- There is increased "chicken wire" network of vascularity, which results in elevated relative cerebral blood volume (rCBV).[3]
- MR perfusion has a sensitivity of 95% for distinguishing grade II from grade III oligodendrogliomas. rCBV above the threshold of 1.75 demonstrates more rapid tumor progression.
Images
Image:MR perfusion oligodendroglioma 2.jpg|MR perfusion of the brain.[4]
Positron Emission Tomography
- 11C-Methionine PET and F-18 FDG PET studies can be used to differentiate oligodendroglioma from anaplastic oligodendroglioma.[3]
- [18F]-fluorodeoxyglucose (FDG) uptake of oligodendroglioma is similar to normal white matter, whereas FDG uptake of anaplastic oligodendroglioma is similar to normal gray matter.
Bone Scan
- Most malignant gliomas get metastasized to the bones via the hematogenous spread.[5]
- Bone scan may be performed to detect metastases of malignant oligodendroglioma or anaplastic oligodendroglioma to bones.[6]
References
- ↑ Eskandar EN, Loeffler JS, O'Neill AM, Hunter GJ, Louis DN (2004). "Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Case 33-2004. A 34-year-old man with a seizure and a frontal-lobe brain lesion". N Engl J Med. 351 (18): 1875–82. doi:10.1056/NEJMcpc049025. PMID 15509821.
- ↑ Nikaido K, Nihira H, Wakai S, Honmo O, Tsuzuki A (2003). "[A case of oligodendroglioma with temporal lobe epilepsy initially suspected as having paroxymal tachycardia]". No To Hattatsu. 35 (5): 401–5. PMID 13677949.
- ↑ 3.0 3.1 Radiographic features of oligodendroglioma. Dr. Henry Knipe and Dr. Frank Gaillard et al. http://radiopaedia.org/articles/oligodendroglioma
- ↑ Image courtesy of Dr.Dr Frank Gaillard. Radiopaedia (original file here). Creative Commons BY-SA-NC
- ↑ Beauchesne P (2011). "Extra-neural metastases of malignant gliomas: myth or reality?". Cancers (Basel). 3 (1): 461–77. doi:10.3390/cancers3010461. PMC 3756372. PMID 24212625.
- ↑ Al-Ali F, Hendon AJ, Liepman MK, Wisniewski JL, Krinock MJ, Beckman K (2005). "Oligodendroglioma metastatic to bone marrow". AJNR Am J Neuroradiol. 26 (9): 2410–4. PMID 16219856.