Difference between revisions of "Ganglioglioma"
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Features: | Features: | ||
*Dysplastic neurons. | *Dysplastic neurons. | ||
**Out of regular architecture / | **Out of regular architecture / heterotopic location. | ||
**Cytomegaly | **Cytomegaly | ||
** | **Abnormal clustering | ||
**Binucleated (very occassionally). | **Binucleated (very occassionally). | ||
**Perimembranous Nissl aggreation. | |||
*Atypical glia (ie neoplastic). | *Atypical glia (ie neoplastic). | ||
*Eosinophilic granular bodies (more common than rosenthal fibers). | *Eosinophilic granular bodies (more common than rosenthal fibers). | ||
Line 82: | Line 83: | ||
**[[MAP2]] +ve | **[[MAP2]] +ve | ||
**Synaptophysin +ve | **Synaptophysin +ve | ||
***Perikaryal surface immunoreactivity for synaptophysin.<ref name="pmid8246055">{{cite journal |authors=Lang FF, Epstein FJ, Ransohoff J, Allen JC, Wisoff J, Abbott IR, Miller DC |title=Central nervous system gangliogliomas. Part 2: Clinical outcome |journal=J. Neurosurg. |volume=79 |issue=6 |pages=867–73 |date=December 1993 |pmid=8246055 |doi=10.3171/jns.1993.79.6.0867 |url=}}</ref> | |||
***This is however also seen in reactive changes.<ref name="pmid9591724">{{cite journal |authors=Quinn B |title=Synaptophysin staining in normal brain: importance for diagnosis of ganglioglioma |journal=Am. J. Surg. Pathol. |volume=22 |issue=5 |pages=550–6 |date=May 1998 |pmid=9591724 |doi=10.1097/00000478-199805000-00005 |url=}}</ref> | |||
** Neurofilament +ve | ** Neurofilament +ve | ||
** Chromogranin +ve | ** Chromogranin +ve | ||
Line 102: | Line 105: | ||
</ref> | </ref> | ||
*H3F3A wildtype. | *H3F3A wildtype. | ||
**DDx: consider G34-mutant | **DDx: consider [[Diffuse hemispheric glioma, H3 G34-mutant]] (rare cases may contain dysplastic ganglion cells).<ref>{{Cite journal | last1 = Andreiuolo | first1 = F. | last2 = Lisner | first2 = T. | last3 = Zlocha | first3 = J. | last4 = Kramm | first4 = C. | last5 = Koch | first5 = A. | last6 = Bison | first6 = B. | last7 = Gareton | first7 = A. | last8 = Zanello | first8 = M. | last9 = Waha | first9 = A. | title = H3F3A-G34R mutant high grade neuroepithelial neoplasms with glial and dysplastic ganglion cell components. | journal = Acta Neuropathol Commun | volume = 7 | issue = 1 | pages = 78 | month = May | year = 2019 | doi = 10.1186/s40478-019-0731-5 | PMID = 31109382 }}</ref> | ||
*Rare cases with co-occurrence of K27M mutation.<ref>{{Cite journal | last1 = Pagès | first1 = M. | last2 = Beccaria | first2 = K. | last3 = Boddaert | first3 = N. | last4 = Saffroy | first4 = R. | last5 = Besnard | first5 = A. | last6 = Castel | first6 = D. | last7 = Fina | first7 = F. | last8 = Barets | first8 = D. | last9 = Barret | first9 = E. | title = Co-occurrence of histone H3 K27M and BRAF V600E mutations in paediatric midline grade I ganglioglioma. | journal = Brain Pathol | volume = | issue = | pages = | month = Dec | year = 2016 | doi = 10.1111/bpa.12473 | PMID = 27984673 }}</ref> | *Rare cases with co-occurrence of K27M mutation.<ref>{{Cite journal | last1 = Pagès | first1 = M. | last2 = Beccaria | first2 = K. | last3 = Boddaert | first3 = N. | last4 = Saffroy | first4 = R. | last5 = Besnard | first5 = A. | last6 = Castel | first6 = D. | last7 = Fina | first7 = F. | last8 = Barets | first8 = D. | last9 = Barret | first9 = E. | title = Co-occurrence of histone H3 K27M and BRAF V600E mutations in paediatric midline grade I ganglioglioma. | journal = Brain Pathol | volume = | issue = | pages = | month = Dec | year = 2016 | doi = 10.1111/bpa.12473 | PMID = 27984673 }}</ref> | ||
Latest revision as of 09:01, 4 April 2022
Ganglioglioma | |
---|---|
Diagnosis in short | |
LM DDx | piloid gliosis, pilocytic astrocytoma, DNT |
Stains | PAS-D +ve (eosinophilic granular bodies) |
IHC | GFAP +ve, Synapto +ve |
Gross | usually temporal +/-cystic |
Site | brain - usu. supratentorial |
| |
Syndromes | associated with epilepsy |
| |
Prevalence | rare - esp. in children |
Prognosis | good (WHO Grade I) |
Ganglioglioma is a epilepsy-associated glioneuronal tumour with benign course. Not to be confused with ganglioneuroma.
General
- Gangliolioma: Grade I WHO mixed neuronal-glial tumour (ICD-O code: 9505/1).
- Anaplastic ganglioglioma: Grade III (ICD-O: 9505/3)
- Rare (approx. 0.5% of all CNS tumors).
- Usu. temporal lobe.
- Predominantly children (mean age: 9 years).
- Recognized as a cause of epilepsy.[1]
- Favourable prognosis (survival rates up to 97%)
Imaging
- Well-defined, T2-hyperintense.
- Strong CM enhancement.
- May contain cysts.
- Associated with temporal lobe.
Gross
- Circumscribed lesion.
- Usu. contrast enhancing.
- Solid, but intracortical cysts may be present.
- Little mass effect.
Microscopic
Microscopic
Features:
- Dysplastic neurons.
- Out of regular architecture / heterotopic location.
- Cytomegaly
- Abnormal clustering
- Binucleated (very occassionally).
- Perimembranous Nissl aggreation.
- Atypical glia (ie neoplastic).
- Eosinophilic granular bodies (more common than rosenthal fibers).
- Dystrophic calcification.
- Prominent capillary network.
- Lymphocytic cuffing.
- May contain some reticulin.
- Glial component may resemble:
- Fibrillary astrocytoma.
- Oligodendroglioma.
- Pilocytic astrocytoma.
Anaplastic ganglioglioma:
- Brisk mitotic activity
- Necrosis
IHC
- Neurons:
- Glia:
- CD34+/-ve
- BRAF V600E +ve (approx. 25%, mainly ganglion cells).
- MAP2: usu. absent.
- MIB-1 (low, but resembles proliferative tumor component).
Molecular
- BRAF V600E-mutated(approx. 25%).[6]
- BRAF V600E antibody stains especially neuronal cells.[7]
- IDH1/2 wt.
- No 1p/19q codeletion.
- Usu. Chr. 7 gain.
- Rare cases with KIAA1459-BRAF fusion.[8]
- DDx: consider pilocytic astrocytoma with ganglioglioma component. [9]
- CDKN2A deletions, ATRX loss and TERT promotor mutations in anaplastic ganglioglioma.[10]
- DD: consider anaplastic astrocytoma with piloid features (similiar molecular profile).[11]
- H3F3A wildtype.
- DDx: consider Diffuse hemispheric glioma, H3 G34-mutant (rare cases may contain dysplastic ganglion cells).[12]
- Rare cases with co-occurrence of K27M mutation.[13]
Images
Prognosis
- Very good (10-year OS: 97%)
- Primary treatment: surgery.
- Seizure free outcome: 81%.
- Incomplete resection as major factor for persisting epilepsia.[14]
DDx:
- DNT.
- Oligodendroglioma.
- PXA.
- Desmoplastic infantile astrocytoma and ganglioglioma.
- Cortical tuber.
- Trapped cortical neurons in diffuse astrocytoma.
- Papillary glioneuronal tumor.
See also
References
- ↑ Im, SH.; Chung, CK.; Cho, BK.; Lee, SK. (Mar 2002). "Supratentorial ganglioglioma and epilepsy: postoperative seizure outcome.". J Neurooncol 57 (1): 59-66. PMID 12125968.
- ↑ Terrier, LM.; Bauchet, L.; Rigau, V.; Amelot, A.; Zouaoui, S.; Filipiak, I.; Caille, A.; Almairac, F. et al. (05 2017). "Natural course and prognosis of anaplastic gangliogliomas: a multicenter retrospective study of 43 cases from the French Brain Tumor Database.". Neuro Oncol 19 (5): 678-688. doi:10.1093/neuonc/now186. PMID 28453747.
- ↑ Zanello, M.; Pages, M.; Tauziède-Espariat, A.; Saffroy, R.; Puget, S.; Lacroix, L.; Dezamis, E.; Devaux, B. et al. (Oct 2016). "Clinical, Imaging, Histopathological and Molecular Characterization of Anaplastic Ganglioglioma.". J Neuropathol Exp Neurol 75 (10): 971-980. doi:10.1093/jnen/nlw074. PMID 27539475.
- ↑ Lang FF, Epstein FJ, Ransohoff J, Allen JC, Wisoff J, Abbott IR, Miller DC (December 1993). "Central nervous system gangliogliomas. Part 2: Clinical outcome". J. Neurosurg. 79 (6): 867–73. doi:10.3171/jns.1993.79.6.0867. PMID 8246055.
- ↑ Quinn B (May 1998). "Synaptophysin staining in normal brain: importance for diagnosis of ganglioglioma". Am. J. Surg. Pathol. 22 (5): 550–6. doi:10.1097/00000478-199805000-00005. PMID 9591724.
- ↑ Schindler, G.; Capper, D.; Meyer, J.; Janzarik, W.; Omran, H.; Herold-Mende, C.; Schmieder, K.; Wesseling, P. et al. (Mar 2011). "Analysis of BRAF V600E mutation in 1,320 nervous system tumors reveals high mutation frequencies in pleomorphic xanthoastrocytoma, ganglioglioma and extra-cerebellar pilocytic astrocytoma.". Acta Neuropathol 121 (3): 397-405. doi:10.1007/s00401-011-0802-6. PMID 21274720.
- ↑ Koelsche, C.; Wöhrer, A.; Jeibmann, A.; Schittenhelm, J.; Schindler, G.; Preusser, M.; Lasitschka, F.; von Deimling, A. et al. (Jun 2013). "Mutant BRAF V600E protein in ganglioglioma is predominantly expressed by neuronal tumor cells.". Acta Neuropathol 125 (6): 891-900. doi:10.1007/s00401-013-1100-2. PMID 23435618.
- ↑ Pekmezci, M.; Villanueva-Meyer, JE.; Goode, B.; Van Ziffle, J.; Onodera, C.; Grenert, JP.; Bastian, BC.; Chamyan, G. et al. (06 2018). "The genetic landscape of ganglioglioma.". Acta Neuropathol Commun 6 (1): 47. doi:10.1186/s40478-018-0551-z. PMID 29880043.
- ↑ Mesturoux, L.; Durand, K.; Pommepuy, I.; Robert, S.; Caire, F.; Labrousse, F. (Aug 2016). "Molecular Analysis of Tumor Cell Components in Pilocytic Astrocytomas, Gangliogliomas, and Oligodendrogliomas.". Appl Immunohistochem Mol Morphol 24 (7): 496-500. doi:10.1097/PAI.0000000000000288. PMID 27389560.
- ↑ Zanello, M.; Pages, M.; Tauziède-Espariat, A.; Saffroy, R.; Puget, S.; Lacroix, L.; Dezamis, E.; Devaux, B. et al. (Oct 2016). "Clinical, Imaging, Histopathological and Molecular Characterization of Anaplastic Ganglioglioma.". J Neuropathol Exp Neurol 75 (10): 971-980. doi:10.1093/jnen/nlw074. PMID 27539475.
- ↑ Reinhardt, A.; Stichel, D.; Schrimpf, D.; Sahm, F.; Korshunov, A.; Reuss, DE.; Koelsche, C.; Huang, K. et al. (Aug 2018). "Anaplastic astrocytoma with piloid features, a novel molecular class of IDH wildtype glioma with recurrent MAPK pathway, CDKN2A/B and ATRX alterations.". Acta Neuropathol 136 (2): 273-291. doi:10.1007/s00401-018-1837-8. PMID 29564591.
- ↑ Andreiuolo, F.; Lisner, T.; Zlocha, J.; Kramm, C.; Koch, A.; Bison, B.; Gareton, A.; Zanello, M. et al. (May 2019). "H3F3A-G34R mutant high grade neuroepithelial neoplasms with glial and dysplastic ganglion cell components.". Acta Neuropathol Commun 7 (1): 78. doi:10.1186/s40478-019-0731-5. PMID 31109382.
- ↑ Pagès, M.; Beccaria, K.; Boddaert, N.; Saffroy, R.; Besnard, A.; Castel, D.; Fina, F.; Barets, D. et al. (Dec 2016). "Co-occurrence of histone H3 K27M and BRAF V600E mutations in paediatric midline grade I ganglioglioma.". Brain Pathol. doi:10.1111/bpa.12473. PMID 27984673.
- ↑ Devaux, B.; Chassoux, F.; Landré, E.; Turak, B.; Laurent, A.; Zanello, M.; Mellerio, C.; Varlet, P. (Jun 2017). "Surgery for dysembryoplastic neuroepithelial tumors and gangliogliomas in eloquent areas. Functional results and seizure control.". Neurochirurgie 63 (3): 227-234. doi:10.1016/j.neuchi.2016.10.009. PMID 28506485.