Wide local excision of breast carcinomas: the effect of ultrasound and wire guidance on the Surgical Precision Index
© BioMed Central 2006
Published: 10 July 2006
To determine the effect of ultrasound and wire guidance on the Surgical Precision Index (SPI) for wide local excision (WLE) of breast carcinomas.
The SPI is calculated from the minimum excision margin being divided by the total specimen weight (sw) to tumour diameter (td) ratio (sw/td). The standard of surgical performance increases with an increase in SPI. A review of histology reports provided SPIs for 97 WLE specimens in 96 patients treated by one surgeon. The mean SPIs for palpable tumours, ultrasound-guided tumours and wire-guided tumours were calculated.
There was a significant difference between palpable tumours and impalpable tumours (Kruskal-Wallis test P = 0.007). There was no significant difference between ultrasound-guided and wire-guided WLEs (Mann-Whitney test P = 0.153).
SPI by guidance technique