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Breast Cancer Res. 2004; 6(Suppl 1): P20.
Published online Jul 14, 2004. doi:  10.1186/bcr839
PMCID: PMC3300380
Screen-detected lobular carcinoma in situ (LCIS) of the breast: 166 cases within the National Health Service Breast Screening Programme (NHSBSP)
RKF Hogben,1 MW Kissin,1 C de Vries,2 P Jackson,1 and C Kissin1
1Royal Surrey County Hospital, Guildford, UK
2University of Surrey, Guildford, UK
Supplement
Symposium Mammographicum 2004
Conference
Symposium Mammographicum 2004
19th - 20th July 2004
Edinburgh, UK
Background
LCIS is classically an incidental finding on breast biopsy with no positive mammographic features. However, screening has identified a small number of cases of pure LCIS.
Aim
To review cases of screen-detected LCIS within the NHSBSP programme since its inception.
Methods
Cases of pure LCIS were identified via Quality Assurance offices and screening centres. Mammograms and pathology were reviewed and recurrence/survival data obtained. New immunohistochemistry was performed on the available pathology blocks.
Results
One hundred and sixty-six cases of screen-detected LCIS were identified in 20 centres since 1988. One hundred and seven (64%) presented with calcifications on mammography, 25 (15%) with a mass lesion and 34 (21%) with distortion or asymmetry. The preoperative diagnosis rate with core biopsy was 28/84 = 33%.
Of 106 patients in which follow-up was available to date, six went on to get an invasive cancer at a median time of 60 months; four of these were unilateral.
Conclusions
Screen-detected LCIS is a rare but important lesion. Preoperative diagnosis is difficult. Invasive recurrence is 1% per year of follow-up.
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