Friday, 9 April 2010

Role of magnetic resonance imaging in managing selected women with newly diagnosed breast cancer

Role of magnetic resonance imaging in managing selected women with newly diagnosed breast cancer
S. Scomersi, M. Urbani, M. Tonutti, F. Zanconati, M. Bortul
The Breast 2010 19;2:115-119

Link to Journal

The purpose of this study is evaluation of therapeutic impact of magnetic resonance imaging (MRI) in breast cancer patients that cannot be imaged adequately with traditional radiology: dense breasts, microcalcifications suspicious for carcinoma in situ or discordance between mammography and ultrasound. A review was performed of 493 patients’ records: determination of breast MRI effect on clinical management was made for the selected 70 cases by analysing pre-MRI and post-MRI therapeutic plans. Analysis of final pathology was useful to determine if the change in surgical plan prompted by MRI was appropriate. 

Breast MRI added clinical information in 52.9% of patients that resulted in 44.3% of management changes that were judged as appropriate in 83.9% of cases. Breast  MRI provides additional useful information, but causes more extensive surgery (40%) with no proven prognostic benefit. MRI should be considered optional in the clinical staging  of breast cancer and performed in selected cases.

Freehand versus ultrasound-guided core biopsies of the breast: reducing the burden of repeat biopsies in patients presenting to the breast clinic

Freehand versus ultrasound-guided core biopsies of the breast: reducing the burden of repeat biopsies in patients presenting to the breast clinic
S.T. Ward, J.A. Shepherd, H. Khalil
The Breast 2010 19;2:105-108

Link to Journal

In our breast unit a significant proportion of core biopsies are performed freehand sometimes necessitating a repeat biopsy under image guidance. The aims of this study were to establish the proportion of patients undergoing freehand core biopsies who proceeded to a repeat procedure and to determine any factors associated with a missed freehand biopsy. Four hundred and ten core biopsies over 21 months were included in the analysis. Demographic details, position and size of the lump, breast volume and lesion depth were recorded.

Twenty-four percent freehand biopsies were repeated under ultrasound guidance. The histological classification of two-thirds of the repeat biopsies were upgraded, suggesting that the lesion had been previously missed. Multivariate analysis showed that missed freehand biopsies were strongly associated with deep lesions. If all lumps sited at a depth of 6 mm or more were selected for US-guided core biopsy, the workload for the ultrasound department would increase by just less than a half and would have the effect of reducing the freehand biopsy miss rate by almost two-thirds.

Core biopsies should be performed under ultrasound guidance. A freehand technique could be limited to superficial lesions. Depth is more predictive for a missed biopsy than lesion size or breast volume