On the TNM Classification of Extramammary Paget’s Disease

Abstract

We statistically examined 95 patients with extramammary Paget’s disease. These examinations were performed between 1962 and 2005 at the Division of Dermatology, National Cancer Center Hospital. In the results, we found that the survival rate of the patients with vessel invasion was 26.5%, but that without vessel invasion was 78.5%.The survival rate of the patients with one lymph node metastasis was 100%, but that with more than two lymph node metastases was only 13.5%. On the basis of these results, we adovocate the definition and future of TNM classification and staging of extramammary Paget’s disease.