Table 2. Regional Lymph Nodes (N)a

NXRegional lymph nodes cannot be assessed.
N0No regional lymph node involvement.
N1Regional lymph node involvement (preauricular, cervical, submandibular).
N2Distant lymph node involvement.

aReprinted with permission from AJCC: Retinoblastoma. In: Edge SB, Byrd DR, Compton CC, et al., eds.: AJCC Cancer Staging Manual. 7th ed. New York, NY: Springer, 2010, pp 562–63.

From: Retinoblastoma Treatment (PDQ®)

Cover of PDQ Cancer Information Summaries
PDQ Cancer Information Summaries [Internet].
Bethesda (MD): National Cancer Institute (US); 2002-.

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