Collaborative Stage Data Set - Revised 05/31/2011 FINAL


CS Site-Specific Factor 2
Clark Level

010Clark level I
In situ, intraepidermal, intraepithelial, noninvasive
Basement membrane of epidermis is intact
020Clark level II
Papillary dermis invaded
030Clark level III
Papillary-reticular dermal interface invaded
040Clark level IV
Reticular dermis invaded
050Clark level V
Subcutaneous tissue invaded (through entire dermis)
See code 988

Not applicable for this site
987Not applicable, not squamous cell carcinoma of skin of eyelid
988Not applicable:  Information not collected for this case
(May include cases converted from code 888 used in CSv1 for "Not applicable" or when the item was not collected.  If this item is required to derive T, N, M, or any stage, use of code 988 may result in an error.)
998No histologic examination of primary site
999Unknown or no information
Not documented in patient record

List of Schemas   SkinEyelid Schema Index