Audit of the results of the Breast Diagnostic Unit of the British Hospital
Abstract
Objectives: to evaluate the performance of the British Hospital's Breast Diagnosis Center during its first year of operation.
Method: the cancer detection rate, the positive predicitive value (PPV), the average size of invading cancer, the minimum cancer percentage, the percentage of stages 0 and I cancer, and the percentage of negative axillary lymph were calculated. Results were compared to reference parameters provided by the Breast Cancer Surveillance Consortium (BCSC).
Results: the PPV of all positive mammograms (BI-RADS 4 and 5) was 61,5% (over P90 according to the BCSC database).
Cancer detection rate was 5.4 cancer cases /1.000 (P10 for a diagnosis center and P75 for a screening center).
Minimum cancer percentage was 37.5% (P25 to P50). 20 cases of breast invasive cancers were diagnosed, and average size of the same was 15.9 mm (P10). The percentage of stage 0 and stage I cancer was 56% (P25 a P50). The percentage of negative axillary lymph was (P10 a P25).
Conclusions: results indicate the British Hospital Breast Diagnosis Center successfully achieves the goals set.
Values of measured parameters fall within the frequency distribution range which include most figures supplied by the reference database (BCSC).
References
(2) Sickles E. Quality assurance: how to audit your own mammography practice. Radiol Clin North Am 1992; 30(1): 265-75.
(3) Feig S. Auditing and benchmarks in screening and diagnostic mammography. Radiol Clin North Am 2007; 45(5): 791-800.
(4) Breast Cancer Surveillance Consortium. Disponible en: http://breastscreening.cancer.gov/benchmarks/diagnostic. Consulta: 20 octubre 2010.
(5) Sickles EA, Miglioretti DL, Ballard-Barbash R, Geller BM, Leung JW, Rosenberg RD, et al. Performance benchmarks for diagnostic mammography. Radiology 2005; 235(3): 775-90.
(6) D'Orsi CJ, Bassett LW, Berg WA. Breast imaging reporting and data system: ACRBI-RADS. 4ª ed. Reston, Virgina: American College of Radiology, 2003; 229-51.
(7) Sohlich RE, Sickles EA, Burnside ES, Dee KE. Interpreting data from audits when screening and diagnostic mammography outcomes are combined. AJR Am J Roentgenol 2002; 178(3): 681-6.
(8) Dee KE, Sickles EA. Medical audit of diagnostic mammography examinations: comparison with screening outcomes obtained concurrently. AJR Am J Roentgenol 2001; 176(3): 729-33.
(9) Febles G, Estellano F, Simón O. Auditoría de los resultados de la mamografía diagnóstica en el Centro de Diagnóstico Mamario de la Asociación Española. Rev Méd Urug 2009; 25(1): 5-13.
(10) Horvath J, Milans S, Méndez G. 10 años del Servicio de Imagenología Mamaria del Hospital Universitario: resultados auditados. Rev Imagenol 2006; 9(2): 36-40.
(11) Horvath J, Krivianski N, Bianco C. Resultados auditados. Servicio de Imagenología Mamaria CASMU. Rev Imagenol 2006; 10(1): 41-5.
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