SKIN, EYELID (67441)    ICDO TOPOGRAPHY (164)

Primary Tumor (T)
      margin, more than 5 mm but not more
      than 10 mm in greatest dimension
T3  Tumor involves full eyelid thickness or, at
      the eyelid margin, more than 10 mm in
      greatest dimension
T4  Tumor invades adjacent structures, which include
      bulbar conjunctiva, sclera and globe, soft tissues of
      the orbit, perineural space, bone and periosteum of
      the orbit, nasal cavity and paranasal sinuses, and
      central nervous system

TX  Primary tumor cannot be assessed
T0  No evidence of primary tumor
Tis Carcinoma 'in situ'
T1  Tumor of any size, not invading the tarsal
      plate or, at the eyelid margin, 5 mm or
      less in greatest dimension
T2  Tumor invades tarsal plate or, at the eyelid

Regional Lymph Nodes (N)

NX  Regional lymph nodes cannot be assessed
N0  No regional lymph node metastasis
N1  Regional lymph node metastasis

• T-CODE:   X
• T-CODE:   IS
• T-CODE:   2A
• T-CODE:   2B
• T-CODE:   3A
• T-CODE:   3B

Primary Tumor (T)
T2b  Tumor more than 10mm, but not more than 20 mm in greatest dimension
      Or, involves full thickness eyelid
T3a  Tumor more than 20 mm in greatest dimension
      Or, any tumor that invades adjacent ocular, or orbital structures
      Any T with perineural tumor invasion
T3b  Complete tumor resection requires enucleation, exenteration or bone 
      resection
T4   Tumor is not resectable due to extensive invasion of ocular, orbital,
      craniofacial structures or brain
 
TX   Primary tumor cannot be assessed
T0   No evidence of primary tumor
Tis  Carcinoma in situ
T1   Tumor 5 mm or less in greatest dimension
      Not invading the tarsal plate or eyelid margin
T2a  Tumor more than 5 mm, but not more than 10 mm in greatest dimension
      Or, any tumor that invades the tarsal plate or eyelid margin

• EYELID
• UPPER LID
• LID
• MELANOMA
• CANTHUS, NOS
• PALPEBRA
• INNER CANTHUS
• LOWER LID
• MEIBOMIAN GLAND
• OUTER CANTHUS

• CBA
  CODE:   TX
  ACOS CODE:   TX
• NET
  CODE:   T0
  ACOS CODE:   T0
• Carcinoma 'in situ'
  CODE:   Tis
  ACOS CODE:   TIS
• Any size, not tarsal pl/eyelid marg < 6 mm
  CODE:   T1
  ACOS CODE:   T1
• Tarsal plate/eylid margin 6 to 10 mm
  CODE:   T2
  ACOS CODE:   T2
• Full eyelid/eyelid margin more than 10 mm
  CODE:   T3
  ACOS CODE:   T3
• TIAS
  CODE:   T4
  ACOS CODE:   T4
• NA
  CODE:   NA
  ACOS CODE:   NA

• NCA
  CODE:   NX
  ACOS CODE:   NX
• NRN
  CODE:   N0
  ACOS CODE:   N0
• Regional lymph node metastasis
  CODE:   N1
  ACOS CODE:   N1
• NA
  CODE:   NA
  ACOS CODE:   NA