Pathologic T

This input is used for staging

Notes

**Note 1:** Assign 88 for in situ cases (behavior code /2). EORTC does not include an in situ category for Mycosis Fungoides tumors. **Note 2:** For skin * Patch indicates any size skin lesion without significant elevation or induration * Plaque indicates any size skin lesion that is elevated or indurated * Tumor indicates at least one 1 centimeter (cm) diameter solid or nodular lesion with evidence of depth and/or vertical growth **Note 3:** Assign T1 when skin involvement is present but only a general location/site is mentioned (i.e., face, torso, arms, legs). **Note 4:** Assign T2 If a physician describes a skin lesion of less than 1 cm as a tumor. **Note 5:** Assign T3 if eythrodema is greater than 50%. * Ignore erythroderma if stated to involve less than 50% of the skin **Note 6:** Physicians use more than one method to estimate percentage of skin involvement by mycosis fungoides (MF). Code percent of skin involvement as stated by the physician. * If no percentage is stated and no word such as localized or generalized is used and no stage is given, code as percent not stated

NAACCR Item

NAACCR #880
Pathologic T Pathologic T Display Description Registrar Notes
pX pTX Primary tumor cannot be assessed# Pathologic classification criteria met, evaluation done:
Physician unable to assess T
Surgical resection of primary tumor, extension not stated
Physician assigns pTX, no other information available to determine T
p0 pT0 No evidence of primary tumor## No evidence of any type of skin involvement, including plaques, papules, patches, or tumors
p1 pT1 Limited patches, papules, and/or plaques covering <10% of skin surface Note: T1 has subcategories of T1a and T1b. Assign T1 only when there is no information available to assign one of the subcategories

Skin involvement less than 10%, not stated whether plaques, papules or patches, no tumors
Limited plaques/patches
Plaques, papules, or erythematous patches: % body surface not stated, no tumors

Skin involvement, NOS:
Extent not stated, no tumors
Localized, NOS

Stated as T1 [NOS]
p1A pT1a Patch only Patches only with less than 10% of skin surface involved

Stated as T1a
p1B pT1b Plaque with or without patch Plaques or papules, WITH or WITHOUT patches, with less than 10% of skin surface involved, no tumors

Stated as T1b
p2 pT2 Patches, papules or plaques covering >= 10% of the skin surface Note: T2 has subcategories of T2a and T2b. Assign T2 only when there is no information available to assign one of the subcategories

Skin involvement 10% or more, not stated whether plaques, papules or patches, no tumors
Skin lesion described as tumor less than 1 cm
Generalized plaques/patches

Stated as T2 [NOS]
p2A pT2a Patch only Patches only with 10% or more of skin surface involved

Stated as T2a
p2B pT2b Plaque with or without patch Plaques or papules, WITH or WITHOUT patches, with 10% or more of skin surface involved, no tumors

Stated as T2b
p3 pT3 One or more tumors (>= 1 cm diameter) Cutaneous tumor, size not stated
Generalized erythroderma
(Greater than 50% less than 80% body surface involved with diffuse redness)

Stated as T3
p4 pT4 Confluence of erythema covering >=80% body surface area Generalized erythroderma
Equal to or greater than or equal to 80% body surface involved with diffuse redness

Stated as T4
88 88 Not applicable In situ case but no pTis is defined by EORTC
Death certificate only (DCO) case
<BLANK> BLANK See Registrar Notes Pathologic classification criteria not met
Pathologic classification criteria met, evaluation done:
Results not documented in patient record
No surgical resection of known primary tumor (not T0)
Resection insufficient for site-specific pathologic assessment
No surgical resection of primary tumor and there isn’t a positive biopsy of a structure in the highest T category and highest N category
Evidence of metastatic disease (pM1), no other workup
Only Pathologic Stage Group documented (no T, N, or M information available)
\# TX is not defined in AJCC 7th edition. \## T0 is not defined in AJCC 7th edition.