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There are a number of changes in the classification of penile carcinomas involving the T and N categories and stage grouping. The T classification of kidney has also been modified. Changes in the prostate classification are discussed under that heading. The remaining urological sites are unchanged.

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Except for a finer definition of the N categories, there are no basic changes in the breast classification in TNM 7. The subject of isolated tumour cells in regional lymph nodes, which originally referred to single cells and small clusters, has now evolved to a proposal to include “a cluster of fewer than 200 cells in a single histological cross section.”