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Histopathology. 1985 Mar;9(3):271-80.

Tubular carcinoma of the breast. A long term follow-up.


The aim of this study is to provide a long-term follow-up of patients with tubular carcinoma and to investigate whether the separation of the mixed type of tubular carcinoma, tubular component more than 75%, from invasive ductal carcinoma with a major tubular component (ductal carcinoma MTC), tubular component 50 to 75%, is supported by long term follow-up. For this study 388 consecutive breast carcinomas were selected from the files of the Department of Pathology, Bispebjerg Hospital, Denmark for the years: 1956-59. Twenty tubular carcinomas were found and 16 ductal carcinomas MTC were also identified. For each patient with tubular carcinoma and ductal carcinoma MTC, two controls with ductal carcinoma NOS were selected. The patients in these four groups were followed until 1 April 1982. None of the patients were lost to follow-up. Among the 20 patients with tubular carcinoma, 10 died within this period compared to 37 of the 40 controls. Of the 16 patients with ductal carcinoma MTC, 15 died compared to 29 of the 32 controls. The difference in Kaplan-Meier survival curves between the tubular carcinomas and their controls is highly significant. There is no significant difference between ductal carcinomas MTC and their controls. These findings are not changed significantly when 5, 10, and 20 year survival rates are corrected for expected survival. This study demonstrates long-term survival for patients with tubular carcinoma as compared to ductal carcinoma NOS. There is no difference in long-term survival between ductal carcinoma MTC, tubular component between 50 and 75%, and ductal carcinoma NOS. It therefore seems appropriate to set 75% tubular component as a reasonable cut-off point for the mixed type of tubular carcinoma.

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