| CLIN |
PATH |
DEFINITIONS |
| |
|
PRIMARY
TUMOR (T) |
| |
|
NO
CLASSIFICATION IS RECOMMENDED AT PRESENT. |
| |
|
LYMPH
NODE (N) |
|
|
|
NX |
Regional lymph nodes cannot
be assessed |
|
|
|
N0 |
No regional lymph node
metastasis |
|
|
|
N1 |
Metastasis 3 cm or less in
greatest dimension in any regional lymph node(s) |
|
|
|
N2 |
Metastasis more than 3 cm
in greatest dimension in any regional lymph node(s)
and/or in-transit metastasis |
|
|
|
|
N2a |
Metastasis more than 3 cm
in greatest dimension in any regional node(s) |
|
|
|
|
N2b |
In-transit metastasis |
|
|
|
|
N2c |
Both |
| |
|
PRIMARY
TUMOR (PT) |
|
|
|
pTX |
Primary tumor cannot be
assessed |
|
|
|
pT0 |
No evidence of primary
tumor |
|
|
|
pTis |
Melanoma in situ (atypical
melanocytic hyperplasia, severe melanocytic dysplasia),
not an invasive malignant lesion(Clark's Level I) |
|
|
|
|
pT1 |
Tumor 0.75 mm or less in
thickness and invades the papillary dermis (Clark's Level
II) |
|
|
|
|
pT2 |
Tumor more than 0.75 mm but
not more than 1.5 mm in thickness and/or invades to the
papillary-reticular dermal interface(Clark's Level III) |
|
|
|
|
pT3 |
Tumor more than 1.5 mm but
not more than 4 mm in thickness and/or invades the
reticular dermis (Clark's Level IV) |
|
|
|
|
pT3a |
Tumor more than 1.5 mm but
not more than 3 mm in thickness |
|
|
|
|
pT3b |
Tumor more than 3 mm but
not more than 4 mm in thickness |
|
|
|
|
pT4 |
Tumor more than 4 mm in
thickness and/or invades the subcutaneous tissue and/or
satellite(s) within 2 cm of the primary tumor (Clark's
Level V) |
|
|
|
|
pT4a |
Tumor more than 4 mm in
thickness and/or invades the subcutaneous tissue |
|
|
|
|
pT4b |
Satellite(s) within 2 cm of
the primary tumor |
| |
|
LYMPH
NODE (PN) |
|
|
|
pNX |
Regional lymph nodes cannot
be assessed |
|
|
|
pN0 |
No regional lymph node
metastasis |
|
|
|
pN1 |
Metastasis 3 cm or less in
greatest dimension in any regional lymph node(s) |
|
|
|
pN2 |
Metastasis more than 3 cm
in greatest dimension in any regional lymph node(s)
and/or in-transit metastasis |
|
|
|
|
pN2a |
Metastasis more than 3 cm
in greatest dimension |
|
|
|
|
pN2b |
In-transit metastasis |
|
|
|
|
pN2c |
Both (pN2a and pN2b) |
| |
|
DISTANT
METASTASIS (PM) |
|
|
|
pMX |
Presence of distant
metastasis cannot be assessed |
|
|
|
pM0 |
No distant metastasis |
|
|
|
pM1 |
Distant metastasis |
|
|
|
|
pM1a |
Metastasis in skin or
subcutaneous tissue or lymph node(s) beyond the regional
lymph nodes |
|
|
|
|
pM1b |
Visceral metastasis |