Immun Checkpoint Washout in Patients With Invasive Ductal Breast Cancer

During routine axillary lymph node sampling, which is performed as part of standard staging using imaging methods, a washout sample (which is not not routinely applied ) will be obtained by injecting 1 cc of 0.9% saline into axillary lymph nodes suspected to be metastatic. The aspirated washout sample will be placed in a biochemistry gel tube labeled as Sample 1.

Description: During the biopsy performed to histopathologically confirm the benign nature of a radiologically presumed benign axillary lymph node, a washout sampling will also be conducted by injecting 1 cc of 0.9% saline into benign lymph node. The aspirated washout sample will be placed in a biochemistry gel tube labeled as Sample 2.