Retinoblastoma classification: Difference between revisions

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Latest revision as of 15:26, 17 January 2021

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Sahar Memar Montazerin, M.D.[2] Simrat Sarai, M.D. [3]

Overview

There are several classification systems available for retinoblastoma. As the treatment of the tumor has evolved, a new classification system has been introduced. For intraocular disease, the available grouping systems include International Intraocular Retinoblastoma Classification (IIRC), Intraocular Classification of Retinoblastoma (ICRB), and cTNMH systems. For extraocular disease, the International Retinoblastoma Staging System (IRSS) and cTNMH schemes can be used.

Classification

Retinoblastoma has been classified according to different classification systems for variable purposes.^[1]
Each classification system has been developed depending on the change in the management of the tumor.
For treatment purposes, retinoblastoma is classified into:

Intraocular Retinoblastoma Classification System

- This classification system incudes the following:
  - International Intraocular Retinoblastoma Classification (IIRC)^[2]^[3]^[4]
  - Intraocular Classification of Retinoblastoma (ICRB)
  - The cTNMH system of American Joint Committee on Cancer (AJCC)

Intraocular Classifications of Retinoblastoma and their Features

	International Intraocular Retinoblastoma Classification (IIRC)	Intraocular Classification of Retinoblastoma (ICRB)
Group A (very low risk)	Small intraretinal tumors away from foveola and optic nerve 3mm or smaller in the greatest dimension, confined to the retina Located > 3 mm from the foveola and 1.5 mm from the optic disc	Tumors ≤ 3 mm (in basal dimension or thickness)
Group B (low risk)	Tumors confined to the retina Not in group A Tumor-associated subretinal fluid less than 3 mm from the tumor with no subretinal seeding	Tumors > 3 mm (in basal dimension or thickness) or Macular location (≤ 3 mm to foveola) Juxtapapillary location (≤ 1.5 mm to disc) Additional subretinal fluid (≤3 mm from margin)
Group C (moderate risk)	Local disease with minimal subretinal or vitreous seeding with the following characteristics: Discrete Subretinal fluid, present or past, without seeding involving up to one-fourth of the retina Local fine vitreous seeding may be present close to the discrete tumor Local subretinal seeding less than 3 mm (2 DD) from the tumor	Tumor with: Subretinal seeds ≤ 3 mm from tumor Vitreous seeds ≤ 3 mm from tumor Both subretinal and vitreous seeds ≤ 3 mm from the tumor
Group D (high risk)	Diffuse tumor with significant vitreous or subretinal seeding Maybe massive or diffuse Subretinal fluid present or past without seeding, involving up to total retinal detachment The diffuse or massive vitreous disease may include “greasy” seeds or avascular tumor masses Diffuse subretinal seeding may include subretinal plaques or tumor nodules	Tumor with: Subretinal seeds > 3 mm from tumor Vitreous seeds > 3 mm from tumor Both subretinal and vitreous seeds > 3 mm from retinoblastoma
Group E (very high risk)	Presence of any one or more of the following poor prognostic features: Tumor touching the lens Tumor anterior to anterior vitreous face involving the ciliary body or anterior segment Diffuse infiltrating retinoblastoma Neovascular glaucoma Opaque media from hemorrhage Tumor necrosis with aseptic orbital cellulitis Phthisis bulbi	Extensive tumor filling >50% globe or with neovascular glaucoma Opaque media from hemorrhage in the anterior chamber, vitreous, or subretinal space Invasion of the post-laminar optic nerve choroid (>2 mm), sclera, orbit, and anterior chamber

Reese-Ellsworth Classification for Intraocular Tumors^[5]

This classification system was first introduced in 1960 and used to predict the chance of salvaging the eye after external beam radiotherapy.
However, following the introduction of chemotherapy for retinoblastoma treatment, it lost its significance.

Reese-Ellsworth Classification^[6]

Stage	Sub-stage	Features	Prognosis
Group I	a	Solitory tumor < 6 mm at or behind the equator	Very favorable
Group I	b	Multiple tumors, none > 6 mm, all are at or behind the equator	Very favorable
Group II	a	Solitary tumor, 6 to 15 mm, all at or behind the equator	Favorable
Group II	b	Multiple tumors, 6 to 15 mm, behind the equator	Favorable
Group III	a	Lesion anterior to the equator	Undetermind
Group III	b	Solitary tumor larger than 15 mm, behind the equator	Undetermined
Group IV	a	Multiple tumors, some larger than 15 mm	Unfavorable
Group IV	b	Any lesions extending to the ora serrata	Unfavorable
Group V	a	Massive tumor occupying over half the retina	Very unfavorable
Group V	b	Vitreous seeding	Very unfavorable

Extra-ocular Retinoblastoma Classification System

- This classification system includes the following:
  - International retinoblastoma staging system
  - cTNMH system of American Joint Committee on Cancer (AJCC)^[7]

To see the full staging system click here.

References

↑ Chantada GL, Sampor C, Bosaleh A, Solernou V, Fandiño A, de Dávila MT (September 2013). "Comparison of staging systems for extraocular retinoblastoma: analysis of 533 patients". JAMA Ophthalmol. 131 (9): 1127–34. doi:10.1001/jamaophthalmol.2013.260. PMID 23787805.
↑ Shields CL, Mashayekhi A, Au AK, Czyz C, Leahey A, Meadows AT, Shields JA (December 2006). "The International Classification of Retinoblastoma predicts chemoreduction success". Ophthalmology. 113 (12): 2276–80. doi:10.1016/j.ophtha.2006.06.018. PMID 16996605.
↑ Zage PE, Reitman AJ, Seshadri R, Weinstein JL, Mets MB, Zeid JL, Greenwald MJ, Strauss LC, Goldman S (March 2008). "Outcomes of a two-drug chemotherapy regimen for intraocular retinoblastoma". Pediatr Blood Cancer. 50 (3): 567–72. doi:10.1002/pbc.21301. PMID 17729249.
↑ Novetsky DE, Abramson DH, Kim JW, Dunkel IJ (March 2009). "Published international classification of retinoblastoma (ICRB) definitions contain inconsistencies--an analysis of impact". Ophthalmic Genet. 30 (1): 40–4. doi:10.1080/13816810802452168. PMID 19172510.
↑ Linn Murphree A (March 2005). "Intraocular retinoblastoma: the case for a new group classification". Ophthalmol Clin North Am. 18 (1): 41–53, viii. doi:10.1016/j.ohc.2004.11.003. PMID 15763190.
↑ Murphree, A. Linn; Chantada, Guillermo L. (2015). "Retinoblastoma: Staging and Grouping": 29–37. doi:10.1007/978-3-662-43451-2_3.
↑ "TNM8: The updated TNM classification for retinoblastoma". Community Eye Health. 31 (101): 34. 2018. PMC 5998398. PMID 29915471.

Template:WH Template:WS

[pmid23787805-1] Chantada GL, Sampor C, Bosaleh A, Solernou V, Fandiño A, de Dávila MT (September 2013). "Comparison of staging systems for extraocular retinoblastoma: analysis of 533 patients". JAMA Ophthalmol. 131 (9): 1127–34. doi:10.1001/jamaophthalmol.2013.260. PMID 23787805.

[pmid16996605-2] Shields CL, Mashayekhi A, Au AK, Czyz C, Leahey A, Meadows AT, Shields JA (December 2006). "The International Classification of Retinoblastoma predicts chemoreduction success". Ophthalmology. 113 (12): 2276–80. doi:10.1016/j.ophtha.2006.06.018. PMID 16996605.

[pmid17729249-3] Zage PE, Reitman AJ, Seshadri R, Weinstein JL, Mets MB, Zeid JL, Greenwald MJ, Strauss LC, Goldman S (March 2008). "Outcomes of a two-drug chemotherapy regimen for intraocular retinoblastoma". Pediatr Blood Cancer. 50 (3): 567–72. doi:10.1002/pbc.21301. PMID 17729249.

[pmid19172510-4] Novetsky DE, Abramson DH, Kim JW, Dunkel IJ (March 2009). "Published international classification of retinoblastoma (ICRB) definitions contain inconsistencies--an analysis of impact". Ophthalmic Genet. 30 (1): 40–4. doi:10.1080/13816810802452168. PMID 19172510.

[pmid15763190-5] Linn Murphree A (March 2005). "Intraocular retinoblastoma: the case for a new group classification". Ophthalmol Clin North Am. 18 (1): 41–53, viii. doi:10.1016/j.ohc.2004.11.003. PMID 15763190.

[MurphreeChantada2015-6] Murphree, A. Linn; Chantada, Guillermo L. (2015). "Retinoblastoma: Staging and Grouping": 29–37. doi:10.1007/978-3-662-43451-2_3.

[pmid29915471-7] "TNM8: The updated TNM classification for retinoblastoma". Community Eye Health. 31 (101): 34. 2018. PMC 5998398. PMID 29915471.

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@@ Line 1: / Line 1: @@
 __NOTOC__
 {{Retinoblastoma}}
-{{CMG}}{{AE}}{{Simrat}}
+{{CMG}}; {{AE}} {{Sahar}} {{Simrat}}
 ==Overview==
-Retinoblastoma may be classified into several subgroups based on the International Retinoblastoma Staging System (IRSS).<ref name="pmid10388023">{{cite journal| author=Pratt CB, Fontanesi J, Lu X, Parham DM, Elfervig J, Meyer D| title=Proposal for a New Staging Scheme for Intraocular and Extraocular Retinoblastoma Based on an Analysis of 103 Globes. | journal=Oncologist | year= 1997 | volume= 2 | issue= 1 | pages= 1-5 | pmid=10388023 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=10388023  }} </ref> <ref name="pmid15136321">{{cite journal| author=Shields CL, Mashayekhi A, Demirci H, Meadows AT, Shields JA| title=Practical approach to management of retinoblastoma. | journal=Arch Ophthalmol | year= 2004 | volume= 122 | issue= 5 | pages= 729-35 | pmid=15136321 | doi=10.1001/archopht.122.5.729 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=15136321  }} </ref><ref name="pmid15763190">{{cite journal| author=Linn Murphree A| title=Intraocular retinoblastoma: the case for a new group classification. | journal=Ophthalmol Clin North Am | year= 2005 | volume= 18 | issue= 1 | pages= 41-53, viii | pmid=15763190 | doi=10.1016/j.ohc.2004.11.003 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=15763190  }} </ref>
+There are several [[classification]] systems available for retinoblastoma. As the treatment of the [[tumor]] has evolved, a new [[classification]] system has been introduced. For [[Ocular|intraocular]] [[diseases|disease]], the available grouping systems include International Intraocular Retinoblastoma [[Classification]] (IIRC), Intraocular [[Classification]] of Retinoblastoma (ICRB), and [[TNM|cTNMH systems]]. For [[Ocular|extraocular]] [[disease]], the International Retinoblastoma [[Cancer staging|Staging]] System (IRSS) and [[TNM Staging System|cTNMH]] schemes can be used.
 ==Classification==
-The International Classification for Intraocular Retinoblastoma, based upon the Philadelphia and Murphree systems is currently the classification being used by the Children's Oncology Group in multicenter treatment protocols.<ref name="pmid10388023">{{cite journal| author=Pratt CB, Fontanesi J, Lu X, Parham DM, Elfervig J, Meyer D| title=Proposal for a New Staging Scheme for Intraocular and Extraocular Retinoblastoma Based on an Analysis of 103 Globes. | journal=Oncologist | year= 1997 | volume= 2 | issue= 1 | pages= 1-5 | pmid=10388023 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=10388023  }} </ref><ref name="pmid15136321">{{cite journal| author=Shields CL, Mashayekhi A, Demirci H, Meadows AT, Shields JA| title=Practical approach to management of retinoblastoma. | journal=Arch Ophthalmol | year= 2004 | volume= 122 | issue= 5 | pages= 729-35 | pmid=15136321 | doi=10.1001/archopht.122.5.729 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=15136321  }} </ref><ref name="pmid15763190">{{cite journal| author=Linn Murphree A| title=Intraocular retinoblastoma: the case for a new group classification. | journal=Ophthalmol Clin North Am | year= 2005 | volume= 18 | issue= 1 | pages= 41-53, viii | pmid=15763190 | doi=10.1016/j.ohc.2004.11.003 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=15763190  }} </ref><ref name="pmid16996605">{{cite journal| author=Shields CL, Mashayekhi A, Au AK, Czyz C, Leahey A, Meadows AT et al.| title=The International Classification of Retinoblastoma predicts chemoreduction success. | journal=Ophthalmology | year= 2006 | volume= 113 | issue= 12 | pages= 2276-80 | pmid=16996605 | doi=10.1016/j.ophtha.2006.06.018 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=16996605  }} </ref><ref name="pmid15763190">{{cite journal| author=Linn Murphree A| title=Intraocular retinoblastoma: the case for a new group classification. | journal=Ophthalmol Clin North Am | year= 2005 | volume= 18 | issue= 1 | pages= 41-53, viii | pmid=15763190 | doi=10.1016/j.ohc.2004.11.003 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=15763190  }} </ref> The goal of International Classification of Retinoblastoma (ICRB) is to reflect the likelihood of ocular survival based on modern treatment techniques such as [[chemotherapy]] and focal therapy. The International Classification of Retinoblastoma (ICRB) was developed to better predict those with intraocular retinoblastoma who are likely to be cured without the need for external-beam radiation treatment or [[enucleation]]. International retinoblastoma classification predicts the overall survival in patients with retinoblastoma.<ref name="radio">  Retinoblastoma. Radiopedia(2015) http://radiopaedia.org/articles/retinoblastoma Accessed on October 10 2015</ref>
+* Retinoblastoma has been [[Classification|classified]] according to different [[classification]] systems for variable purposes.<ref name="pmid23787805">{{cite journal |vauthors=Chantada GL, Sampor C, Bosaleh A, Solernou V, Fandiño A, de Dávila MT |title=Comparison of staging systems for extraocular retinoblastoma: analysis of 533 patients |journal=JAMA Ophthalmol |volume=131 |issue=9 |pages=1127–34 |date=September 2013 |pmid=23787805 |doi=10.1001/jamaophthalmol.2013.260 |url=}}</ref>
-{| style="border: 0px; font-size: 90%; margin: 3px; width: 800px" align=center
+* Each [[classification]] system has been developed depending on the change in the management of the [[tumor]].
-|valign=top|
+* For treatment purposes, retinoblastoma is [[Classification|classified]] into:
-|+
-! style="background: #4479BA; width: 200px;" | {{fontcolor|#FFF|MRI component}}
+=== '''Intraocular Retinoblastoma''' [[Classification]] System ===
-! style="background: #4479BA; width: 400px;" | {{fontcolor|#FFF|Features}}
+**This [[classification]] system incudes the following:
+***International Intraocular Retinoblastoma [[Classification]] (IIRC)<ref name="pmid16996605">{{cite journal |vauthors=Shields CL, Mashayekhi A, Au AK, Czyz C, Leahey A, Meadows AT, Shields JA |title=The International Classification of Retinoblastoma predicts chemoreduction success |journal=Ophthalmology |volume=113 |issue=12 |pages=2276–80 |date=December 2006 |pmid=16996605 |doi=10.1016/j.ophtha.2006.06.018 |url=}}</ref><ref name="pmid17729249">{{cite journal |vauthors=Zage PE, Reitman AJ, Seshadri R, Weinstein JL, Mets MB, Zeid JL, Greenwald MJ, Strauss LC, Goldman S |title=Outcomes of a two-drug chemotherapy regimen for intraocular retinoblastoma |journal=Pediatr Blood Cancer |volume=50 |issue=3 |pages=567–72 |date=March 2008 |pmid=17729249 |doi=10.1002/pbc.21301 |url=}}</ref><ref name="pmid19172510">{{cite journal |vauthors=Novetsky DE, Abramson DH, Kim JW, Dunkel IJ |title=Published international classification of retinoblastoma (ICRB) definitions contain inconsistencies--an analysis of impact |journal=Ophthalmic Genet. |volume=30 |issue=1 |pages=40–4 |date=March 2009 |pmid=19172510 |doi=10.1080/13816810802452168 |url=}}</ref>
+***Intraocular Classification of Retinoblastoma (ICRB)
+***The [[TNM classification|cTNMH]] system of American Joint Committee on [[Cancer]] (AJCC)
+==== Intraocular [[Classification|Classifications]] of Retinoblastoma and their [[Features (pattern recognition)|Features]] ====
+{| border="3"
+! style="background: #4479BA; width: 150px;" | {{fontcolor|#FFF}} !! style="background: #4479BA; width: 600px;" | {{fontcolor|#FFF|International Intraocular Retinoblastoma Classification (IIRC)}} !! style="background: #4479BA; width: 600px;" | {{fontcolor|#FFF|Intraocular Classification of Retinoblastoma (ICRB)}}
+|-
+! style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" align="center" |Group A
+(very low
+risk)
+|style="padding: 5px 5px; background: #F5F5F5; |
+* Small [[Retina|intraretinal]] [[tumors]] away from foveola and [[optic nerve]]
+* 3mm or smaller in the greatest dimension, confined to the [[retina]]
+* Located > 3 mm from the [[Foveola suprameatica|foveola]] and 1.5 mm from the [[optic disc]]
+|style="padding: 5px 5px; background: #F5F5F5; |
+* [[Tumors]] ≤ 3 mm (in basal dimension or thickness)
+|-
+!style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" align="center" |Group B
+(low risk)
+|style="padding: 5px 5px; background: #F5F5F5; |
+* [[Tumors]] confined to the [[retina]]
+* Not in group A
+* [[Tumor]]-associated [[Retina|subretinal]] fluid less than 3 mm from the [[tumor]] with no [[Retina|subretinal]] seeding
+|style="padding: 5px 5px; background: #F5F5F5; |
+* [[Tumors]] > 3 mm (in basal dimension or thickness) or
+* [[Macular]] location (≤ 3 mm to [[Foveola suprameatica|foveola]])
+* Juxtapapillary location (≤ 1.5 mm to [[Optic disc|disc]])
+* Additional [[Retina|subretinal]] fluid (≤3 mm from margin)
+|-
+! style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" align="center" |Group C
+(moderate
+risk)
+|style="padding: 5px 5px; background: #F5F5F5; |
+* Local [[disease]] with minimal [[Retina|subretinal]] or [[vitreous]] seeding with the following characteristics:
+** Discrete
+** [[Retina|Subretinal]] fluid, present or past, without seeding involving up to one-fourth of the [[retina]]
+** Local fine [[vitreous]] seeding may be present close to the discrete [[tumor]]
+** Local [[Retina|subretinal]] seeding less than 3 mm (2 DD) from the [[tumor]]
+|style="padding: 5px 5px; background: #F5F5F5; |
+* [[Tumor]] with:
+** [[Retina|Subretinal]] seeds ≤ 3 mm from [[tumor]]
+** [[Vitreous]] seeds ≤ 3 mm from [[tumor]]
+** Both [[Retina|subretinal]] and [[vitreous]] seeds ≤ 3 mm from the [[tumor]]
+|-
+!style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" align="center" |Group D
+(high risk)
+|style="padding: 5px 5px; background: #F5F5F5; |
+* Diffuse [[tumor]] with significant [[vitreous]] or [[Retina|subretinal]] seeding
+* Maybe massive or diffuse
+* [[Retina|Subretinal]] fluid present or past without seeding, involving up to total [[retinal detachment]]
+* The diffuse or massive [[vitreous]] [[disease]] may include “greasy” seeds or [[avascular]] [[tumor]] [[Mass|masses]]
+* Diffuse [[Retina|subretinal]] seeding may include [[Retina|subretinal]] plaques or [[tumor]] [[Nodule (medicine)|nodules]]
+|style="padding: 5px 5px; background: #F5F5F5; |
+* [[Tumor]] with:
+** [[Retina|Subretinal]] seeds > 3 mm from [[tumor]]
+** [[Vitreous]] seeds > 3 mm from [[tumor]]
+** Both [[Retina|subretinal]] and [[vitreous]] seeds > 3 mm from retinoblastoma
+|-
+!style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" align="center" |Group E
+(very high
+risk)
+|style="padding: 5px 5px; background: #F5F5F5; |
+* Presence of any one or more of the following poor [[prognosis|prognostic]] [[Features (pattern recognition)|features]]:
+** [[Tumor]] touching the [[lens]]
+** [[Tumor]] [[Anatomical terms of location|anterior]] to [[Anatomical terms of location|anterior]] [[vitreous]] face involving the [[ciliary body]] or [[Anatomical terms of location|anterior]] segment
+** Diffuse infiltrating retinoblastoma
+** [[Neovascular glaucoma]]
+** Opaque media from [[hemorrhage]]
+** [[Tumor]] [[necrosis]] with [[aseptic]] [[orbital cellulitis]]
+** [[Phthisis bulbi]]
+|style="padding: 5px 5px; background: #F5F5F5; |
+* Extensive [[tumor]] filling >50% globe or with<br>[[neovascular glaucoma]]
+* Opaque media from [[hemorrhage]] in the [[anterior chamber]], [[vitreous]], or [[Retina|subretinal]] space
+* Invasion of the post-laminar [[optic nerve]]<br>[[choroid]] (>2 mm), [[sclera]], [[orbit]], and [[anterior chamber]]
+|}
+=== Reese-Ellsworth [[Classification]] for Intraocular [[Tumors]]<ref name="pmid15763190">{{cite journal |vauthors=Linn Murphree A |title=Intraocular retinoblastoma: the case for a new group classification |journal=Ophthalmol Clin North Am |volume=18 |issue=1 |pages=41–53, viii |date=March 2005 |pmid=15763190 |doi=10.1016/j.ohc.2004.11.003 |url=}}</ref> ===
+*This [[classification]] system was first introduced in 1960 and used to predict the chance of salvaging the [[eye]] after [[external beam radiotherapy]].
+*However, following the introduction of [[chemotherapy]] for retinoblastoma treatment, it lost its significance.
+{| style="border: 0px; font-size: 90%; margin: 3px; width: 800px;" align="center"
+| valign="top" |
+|}
+==== Reese-Ellsworth [[Classification]]<ref name="MurphreeChantada2015">{{cite journal|last1=Murphree|first1=A. Linn|last2=Chantada|first2=Guillermo L.|title=Retinoblastoma: Staging and Grouping|year=2015|pages=29–37|doi=10.1007/978-3-662-43451-2_3}}</ref> ====
+{| style="border: 0px; font-size: 90%; margin: 3px; width: 800px;" align="center"
+! style="background: #4479BA; width: 200px;" | {{fontcolor|#FFF|Stage}}
+! style="background: #4479BA; width: 200px;" | {{fontcolor|#FFF|Sub-stage}}
+! style="background: #4479BA; width: 200px;" | {{fontcolor|#FFF|Features}}
+! style="background: #4479BA; width: 200px;" | {{fontcolor|#FFF|Prognosis}}
 |-
-| style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" |
+| rowspan="2" style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" |Group I
-:Group A
+| style="padding: 5px 5px; background: #F5F5F5;" |
+*a
 | style="padding: 5px 5px; background: #F5F5F5;" |
-*Retinoblastoma 3 mm or less in basal dimension or thickness, located at least 3 mm from the foveola and 1.5 mm from the optic nerve
+*Solitory [[tumor]] < 6 mm at or behind the equator
+| style="padding: 5px 5px; background: #F5F5F5;" |
+*Very favorable
 |-
-| style="padding: 5px 5px; background: #DCDCDC;font-weight: bold" |
-:Group B
 | style="padding: 5px 5px; background: #F5F5F5;" |
-*Retinoblastoma not in Group A with 1 or more of the following:
+* b
-**Macular location (≤3 mm to foveola)
+| style="padding: 5px 5px; background: #F5F5F5;" |
-**Juxtapapillary location (≤1.5 mm to optic nerve)
+* Multiple [[Tumor|tumors]], none > 6 mm, all are at or behind the equator
-**Additional subretinal fluid (≤5 mm from margin)
+| style="padding: 5px 5px; background: #F5F5F5;" |
+* Very favorable
 |-
-| style="padding: 5px 5px; background: #DCDCDC;font-weight: bold" |
+| rowspan="2" style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" |Group II
-:Group C
 | style="padding: 5px 5px; background: #F5F5F5;" |
-*Retinoblastoma tumor with 1 of the following:
+* a
-**Focal subretinal seeds
+| style="padding: 5px 5px; background: #F5F5F5;" |
-**Focal vitreous seeds
+* Solitary [[tumor]], 6 to 15 mm, all at or behind the equator
-**Both focal subretinal and vitreous seeds.
+| style="padding: 5px 5px; background: #F5F5F5;" |
+* Favorable
 |-
-| style="padding: 5px 5px; background: #DCDCDC;font-weight: bold" |
-:Group D
 | style="padding: 5px 5px; background: #F5F5F5;" |
-*Retinoblastoma tumor with 1 of the following:
+* b
-**Diffuse subretinal seeds
+| style="padding: 5px 5px; background: #F5F5F5;" |
-**Diffuse vitreous seeds
+* Multiple [[Tumor|tumors]], 6 to 15 mm, behind the equator
-**Both diffuse subretinal and vitreous seeds
+| style="padding: 5px 5px; background: #F5F5F5;" |
+* Favorable
 |-
-| style="padding: 5px 5px; background: #DCDCDC;font-weight: bold" |
+| rowspan="2" style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" |Group III
-:Group E
 | style="padding: 5px 5px; background: #F5F5F5;" |
-*Very high-risk eyes with 1 or more of the following:
+* a
-**Neovascular glaucoma
+| style="padding: 5px 5px; background: #F5F5F5;" |
-**Massive intraocular hemorrhage
+* [[Lesion]] [[Anatomical terms of location|anterior]] to the equator
-**Aseptic orbital cellulitis
+| style="padding: 5px 5px; background: #F5F5F5;" |
-**Tumor anterior to the vitreous face
+* Undetermind
-**Tumor touching the lens
+|-
-**Diffuse infiltrating retinoblastoma
+| style="padding: 5px 5px; background: #F5F5F5;" |
-**Phthisis bulbi (also known as end-stage eye, this is a nonfunctioning, atrophic, scarred, and disorganized globe, frequently with dystrophic calcification).
+* b
+| style="padding: 5px 5px; background: #F5F5F5;" |
+* Solitary [[tumor]] larger than 15 mm, behind the equator
+| style="padding: 5px 5px; background: #F5F5F5;" |
+* Undetermined
+|-
+| rowspan="2" style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" |Group IV
+| style="padding: 5px 5px; background: #F5F5F5;" |
+* a
+| style="padding: 5px 5px; background: #F5F5F5;" |
+* Multiple [[Tumor|tumors]], some larger than 15 mm
+| style="padding: 5px 5px; background: #F5F5F5;" |
+* Unfavorable
+|-
+| style="padding: 5px 5px; background: #F5F5F5;" |
+* b
+| style="padding: 5px 5px; background: #F5F5F5;" |
+* Any [[Lesion|lesions]] extending to the [[ora serrata]]
+| style="padding: 5px 5px; background: #F5F5F5;" |
+* Unfavorable
+|-
+| rowspan="2" style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" |Group V
+| style="padding: 5px 5px; background: #F5F5F5;" |
+* a
+| style="padding: 5px 5px; background: #F5F5F5;" |
+* Massive [[tumor]] occupying over half the [[retina]]
+| style="padding: 5px 5px; background: #F5F5F5;" |
+* Very unfavorable
+|-
+| style="padding: 5px 5px; background: #F5F5F5;" |
+* b
+| style="padding: 5px 5px; background: #F5F5F5;" |
+* [[Vitreous]] seeding
+| style="padding: 5px 5px; background: #F5F5F5;" |
+* Very unfavorable
 |}
+=== '''Extra-ocular Retinoblastoma''' Classification System ===
+**This classification system includes the following:
+***International retinoblastoma staging system
+***[[TNM|cTNMH]] system of American Joint Committee on Cancer (AJCC)<ref name="pmid29915471">{{cite journal |vauthors= |title=TNM8: The updated TNM classification for retinoblastoma |journal=Community Eye Health |volume=31 |issue=101 |pages=34 |date=2018 |pmid=29915471 |pmc=5998398 |doi= |url=}}</ref>
+*To see the full [[Cancer staging|staging]] system [[Retinoblastoma staging|click here]].
 ==References==
@@ Line 59: / Line 190: @@
 {{WS}}
-[[Category:Disease]]
+[[Category:Medicine]]
-[[Category:Ophthalmology]]
+[[Category:Oncology]]
-[[Category:hereditary cancers]]
+[[Category:Up-To-Date]]
+[[Category:Surgery]]