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Definition |
A pathologic primary tumor TNM stage finding. The definition of pT4 stage finding depends on the particular type of cancer that it refers to; for example, for breast cancer, pT4 stage finding is defined as follows: cancer with tumor of any size with direct extension to chest wall or skin, but only as described in pT4 sub-categories, in accordance with TNM guidelines; for cervical cancer, pT4 stage finding is defined as follows: cancer invades mucosa of bladder or rectum, and/or extends beyond true pelvis (bullous edema is not sufficient to classify a tumor as T4). (from AJCC 7th Ed.)
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