Application of the Van Nuys prognostic index in a retrospective series of 367 ductal carcinomas in situ of the breast examinated by serial macroscopic sectioning: Practical considerations
| Autor: | Jean Michel Coindre, L. Mauriac, Gaëtan MacGrogan, Françoise Bonichon, Picot, M. Durand, A. Avril, de Lara Ct, Monique Trojani, de Mascarel I |
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| Rok vydání: | 2000 |
| Předmět: |
Cancer Research
medicine.medical_specialty medicine.medical_treatment Mammary gland Breast Neoplasms Mastectomy Segmental Independent predictor Severity of Illness Index Disease-Free Survival Breast cancer Histologic grade medicine Humans Life Tables Neoplasm Invasiveness Prospective cohort study Proportional Hazards Models Retrospective Studies Series (stratigraphy) business.industry Carcinoma Ductal Breast Microtomy Middle Aged Ductal carcinoma Prognosis medicine.disease Combined Modality Therapy Survival Analysis Surgery Radiation therapy Carcinoma Intraductal Noninfiltrating Treatment Outcome medicine.anatomical_structure Oncology Female Radiotherapy Adjuvant Radiology Neoplasm Recurrence Local business Follow-Up Studies |
| Zdroj: | Breast Cancer Research and Treatment. 61:151-159 |
| ISSN: | 1573-7217 0167-6806 |
| Popis: | The Van Nuys prognostic index (VNPI) was thought to be useful for predicting response to radiotherapy and local recurrence of ductal carcinoma in situ (DCIS). We applied the VNPI under the conditions defined by Silverstein et al., in 367 retrospective DCIS entirely sectioned into serial macroscopic 2 mm slices (155 patients had radiotherapy, median follow-up 71 months). The percentage of positive blocks with DCIS was also estimated for each specimen with cut-offs at 30% and 60% to obtain three scores. One hundred and ninety five lesions had a low VNPI, 152 an intermediate VNPI, and 20 a high VNPI. There were 9% of local recurrences (half invasive, all in the group without radiotherapy) in the low VNPI group. The local recurrence rate increased with size (p=0.001), with reduction of distance to margins (p=0.05), with histologic grade (p=0.02), with percentage of positive blocks (p=0.0003) and with VNPI score (p=0.03). The percentage of positive blocks was the only independent predictor for local recurrence (p=0.0001). Conclusion: (1) The VNPI was a local recurrence rate predictor between the low and the intermediate groups but in our series the low VNPI group had a surprisingly high local recurrence rate. (2) Only prospective studies will assess the importance of margin width and the role of radiotherapy in maintaining local control. (3) Estimation of the percentage of positive blocks is simple, may be an alternative when measurement of DCIS is difficult and should be taken into account. |
| Databáze: | OpenAIRE |
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