[Relationship between biopsy and prognosis of breast cancer].

Clinical data from 131 patients who underwent primary radical operation for breast cancer at the Second Department of Surgery, Shinshu University Hospital during five-years from January 1976 to the end of December 1980 were analyzed to investigate for the relationship between biopsy and prognosis. The incisional biopsy group had a significant higher recurrence rate as compared with the no biopsy group, cytology group and the cancer negative group after excisional biopsy. Although the puncture aspiration cytology group did not show significant difference in recurrence rate, an any more than 3 weeks of interval between puncture aspiration cytology and radical surgery associated with a significant high recurrence rate. This suggests that the interval also exerts an unfavorable influence upon prognosis. Puncture aspiration cytology was recognized to be apt to result in distant metastasis than any other biopsy methods and also it is tended to have a higher recurrence rate in scirrhous and mucinous carcinoma of the breast.