Abstract B114: Core biopsy in breast cancer diagnosis: The provincial evaluation of utilization and relationship with treatment outcomes
Notice bibliographique
Résumé
Abstract Purpose:To determine: 1) The proportion of women in British Columbia (BC) who have a pre-operative diagnosis of breast cancer by image-guided core biopsy; 2) Whether women who have a pre-operative radiological diagnosis of breast cancer with core biopsy have fewer breast surgeries as part of their initial therapy; 3) Whether local/ locoregional relapse is lower in women who have had a pre-operative diagnosis of breast cancer with a core biopsy versus an open biopsy; 4) Whether there is regional variation in the use of pre-operative core biopsies versus open biopsies in the diagnosis of breast cancer in B.C. 5) Whether the risk of pN0i+ on sentinel node biopsy (SNB) is reduced when the initial diagnosis of breast cancer is made on core biopsy versus open biopsy. Methods: All B.C residents diagnosed with breast cancer in 2006 were reviewed. The women were divided into groups according to the method of diagnosis- pre-operative core needle biopsy, operative biopsy (open biopsy or other surgery), versus other diagnosis. Core biopsies were further divided into image-guided versus clinically-directed core. Women with denovo metastatic disease, locally advanced disease, prior or synchronous invasive or insitu breast cancer, Paget's, alone or with insitu disease, patients with surgical procedures performed out of province, patients diagnosed on death certificate/ autopsy only, and cases without pathology were all excluded. Results: 3130 patients diagnosed in 2006 were identified in the BC Cancer Agency Registry. After exclusions, 2589 patients were included in the study cohort. 32% of patients had diagnosis made on an open surgical procedure, and 68% were diagnosed on a non-open biopsy, of which, 80% were image-guided core biopsies. Seventy-five percent of women with an image-guided core had one or less surgical procedure compared to only 26% of women whose diagnosis was made by surgery, despite the image-guided core biopsy group having larger, more invasive tumors and increased nodal positivity. The type of biopsy did not impact the prevalence of pN0i+ on SNB, or local and locoregional relapse rate. Regionally, Vancouver Coastal and Vancouver Island Health Authority, which are more densely populated urban centres, had the highest proportion of patients diagnosed by core biopsy, 70.3% and 75.4% respectively, and the sparsely populated Northern Health Authority had the lowest proportion at 46.7%. Conclusions: Core biopsies for breast cancer diagnosis are under-utilized in British Columbia and show significant regional variation. Although core biopsy diagnosis does not impact rate of pN0i+ on nodal biopsy or locoregional relapse rates, it is associated with substantially fewer breast/nodal surgeries. More resources are required to promote the use of CNB to providers and patients. Citation Format: Kristy KM Cho, Christine Wilson, Scott Tyldesley, Caroline Speers. Core biopsy in breast cancer diagnosis: The provincial evaluation of utilization and relationship with treatment outcomes. [abstract]. In: Proceedings of the AACR Special Conference on Advances in Breast Cancer Research: Genetics, Biology, and Clinical Applications; Oct 3-6, 2013; San Diego, CA. Philadelphia (PA): AACR; Mol Cancer Res 2013;11(10 Suppl):Abstract nr B114.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».