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  • Breast Metastases to Axillary Lymph Nodes (SLN-Breast)

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The detection of breast cancer metastases to lymph nodes is of great prognostic value for patient treatment. Using machine learning to detect metastatic breast cancer to lymph nodes can increase efficiency of pathologist diagnosis and ultimately ensure patients are accurately staged for prospective treatment. This dataset allows for the objective comparison of breast cancer metastases detection algorithms.

The dataset consists of 130 de-identified whole slide images of H&E stained axillary lymph node specimens from 78 patients. Metastatic breast carcinoma is present in 36 of the WSI from 27 patients. No patient inclusion/exclusion criteria were followed. No slide inclusion/exclusion criteria were followed. The slides were scanned at Memorial Sloan Kettering Cancer Center (MSKCC) with Leica Aperio AT2 scanners at 20x equivalent magnification (0.5 microns per pixel). Together with the slides, the class label of each slide, either positive or negative for breast carcinoma, is given. The slide class label was obtained from the pathology report of the respective case.


Localtab Group

titleData Access

Data Access

Data TypeDownload all or Query/Filter
Images (.SVS, 53 GB)
Supplemental Data (CSV)

Please note that Box has a 15GB download limit, so you will need to download images in batches.

Click the Versions tab for more info about data releases.

titleDetailed Description

Detailed Description

Image Statistics



Number of Participants


Number of Images


Images Size (GB)53

Explanation of target.csv files

target.csv contains a binary label for each slide image in the dataset.

  • target=1 means that the image contains breast cancer metastases.
  • target=0 means that the image does not contain breast cancer metastases.

titleCitations & Data Usage Policy

Citations & Data Usage Policy

Public collection license

titleData Citation

"Campanella, G., Hanna, M. G., Brogi, E., & Fuchs, T. J. (2019). Breast Metastases to Axillary Lymph Nodes [Data set]. The Cancer Imaging Archive."

titlePublication Citation

“Clinical-grade Computational Pathology using Weakly Supervised Deep Learning on Whole Slide Images”, Gabriele Campanella, Matthew G. Hanna, Luke Geneslaw, Allen Miraflor, Vitor Werneck Krauss Silva, Klaus J. Busam, Edi Brogi, Victor E. Reuter, David S. Klimstra, Thomas J. Fuchs, Nature Medicine, July 2019

titleTCIA Citation

Clark K, Vendt B, Smith K, Freymann J, Kirby J, Koppel P, Moore S, Phillips S, Maffitt D, Pringle M, Tarbox L, Prior F. The Cancer Imaging Archive (TCIA): Maintaining and Operating a Public Information Repository, Journal of Digital Imaging, Volume 26, Number 6, December, 2013, pp 1045-1057. DOI: 10.1007/s10278-013-9622-7

Other Publications Using This Data

TCIA maintains a list of publications which leverage TCIA data. If you have a manuscript you'd like to add please contact the TCIA Helpdesk.


Version 1 (Current): Updated 2019/07/18

Data TypeDownload all or Query/Filter
Images (.SVS, 53 GB)
Supplemental Data (CSV)

Please note that Box has a 15GB download limit, so you will need to download images in batches.