Breast Flashcards
Breast pT0
No evidence of primary tumor
Breast pTis (DCIS)
Ductal carcinoma in situ
Breast pTis (Paget)
Paget disease of the nipple NOT associated with invasive carcinoma and/or carcinoma in situ (DCIS) in the underlying breast parenchyma
Breast pT1
General category:
Tumor less than or equal to 20mm in greatest dimension
OR subcategory not determined
Breast pT1mi
Tumor less than or equal to 1mm in greatest dimension
Breast pT1a
Tumor greater than 1mm but less than or equal to 5mm in greatest dimension
Breast PT1b
Tumor greater than 5mm but less than or equal to 10mm
Breast pT1c
Tumor greater than 10mm but less than or equal to 20mm
Breast pT2
Tumor greater than 20mm but less than or equal to 50mm in greatest dimension
Breast pT3
Tumor greater than 50mm in greatest dimension
Breast pT4
Tumor of any size with direct extension to the chest wall and/or to the skin (ulceration or skin nodules)
*invasion of dermis alone does not qualify
OR subcategory not determined
Breast pT4a
Extension to the chest wall (invasion or adherence to the pectoralis muscle in the absence of invasion of chest wall structures does not qualify)
Breast pT4b
Ulceration and/or ipsilateral satellite nodules and/or edema (including peau d’orange) of the skin which do not meet the criteria for inflammatory carcinoma
Breast pT4c
Both T4a and T4b are present
Breast pT4d
Inflammatory carcinoma (erythema and edema involving at least 1/3 or more of the skin of the breast)
