8 min
JCO Article Insights: Axillary Soft Tissue Involvement and Breast Cancer Prognosis Journal of Clinical Oncology (JCO) Podcast
-
- Science
In this JCO Article Insights episode, Giselle de Souza Carvalho provides a summary on "Pathologic Exploration of the Axillary Soft Tissue Microenvironment and Its Impact on Axillary Management and Breast Cancer Outcomes" by Naoum, et al and "Optimization of Breast Cancer Regional Nodal Management" by Braunstein et al published in the January 10, 2024 issue in Journal of Clinical Oncology. The original report discusses how the examination of axillary soft tissue beyond lymph nodes is often omitted and it predicts breast cancer outcomes and need for nodal radiation.
TRANSCRIPT
The guest on this podcast episode has no disclosures to declare.
Giselle Carvalho: Welcome to the JCO Article Insights episode for the February issue of the Journal of Clinical Oncology. This is Giselle Carvalho, your host, one of the ASCO editorial fellows at JCO this year. Today, I'll be providing a summary of an article focused on “The Association of Axillary Soft Tissue Involvement on Outcomes for Breast Cancer Patients.” It was published in November 2023 and was partially presented at the 64th Annual ASCO in October 2022.
Although lymph node involvement in breast cancer patients is correlated with a worse prognosis, the impact of extracapsular involvement is still a matter of debate, and the implications of axillary soft tissue involvement are still not fully understood. There is some evidence indicating a decrease in disease-free survival for patients with less than four lymph nodes and with extracapsular extension, while other studies show that extracapsular involvement has no prognostic role in these patients and that the number of positive lymph nodes might matter more. Patients with node-positive disease may present with only lymph node involvement or lymph node involvement plus extracapsular extension and/or axillary soft tissue involvement. The axillary soft tissue involvement can result from either direct lymph node extension through the capsule or direct microscopic spread from the primary tumor. It is pathologically defined in this article as axillary lymphatic channel invasion, axillary soft tissue deposits, axillary blood vessel invasion, or any combination of these.
This was a retrospective study of patients with invasive breast cancer who received treatment at Massachusetts General Hospital in Boston, Massachusetts, from 2000 to 2020. Lymph nodes and surrounding adipose tissue were submitted in their entirety for histopathologic evaluation using hematoxylin and eosin stain, and immunohistochemical stains could be added at the pathologist's discretion. Eligibility criteria included primary breast cancer and positive lymph nodes without prior or contralateral breast cancer. 2,162 patients were included. They were divided into four groups according to their axillary pathology: the first group was composed of patients with positive lymph nodes with no additional axillary involvement; the second group of patients with positive lymph nodes and extracapsular involvement; the third group of patients with positive lymph nodes and axillary soft tissue involvement but with no extracapsular extension; and the fourth group of patients with positive lymph node and both extracapsular extension and axillary soft tissue involvement.
Primary endpoints were 10-year rates of local-regional failure, which was defined as recurrence in the breast or chest wall or ipsilateral axilla, axillary failure, and distant metastasis. Among 2,162 patients, 58% had lymph node involvement only, 25% had lymph nodes with extracapsular extension, 3.5% had lymph node involvement with axillary soft tissue involvement, and 14% had lymph node involvement with both extracapsular and axillary soft tissue involvement. 51% of cases of axillary soft tissue involvement were in the form of axillary lymphatic channel invasion. The median follow-up was 9.4 years, and 74% of the cohort had hormone receptor-positive breast cancer, 10% had triple-negative disease, and 16
In this JCO Article Insights episode, Giselle de Souza Carvalho provides a summary on "Pathologic Exploration of the Axillary Soft Tissue Microenvironment and Its Impact on Axillary Management and Breast Cancer Outcomes" by Naoum, et al and "Optimization of Breast Cancer Regional Nodal Management" by Braunstein et al published in the January 10, 2024 issue in Journal of Clinical Oncology. The original report discusses how the examination of axillary soft tissue beyond lymph nodes is often omitted and it predicts breast cancer outcomes and need for nodal radiation.
TRANSCRIPT
The guest on this podcast episode has no disclosures to declare.
Giselle Carvalho: Welcome to the JCO Article Insights episode for the February issue of the Journal of Clinical Oncology. This is Giselle Carvalho, your host, one of the ASCO editorial fellows at JCO this year. Today, I'll be providing a summary of an article focused on “The Association of Axillary Soft Tissue Involvement on Outcomes for Breast Cancer Patients.” It was published in November 2023 and was partially presented at the 64th Annual ASCO in October 2022.
Although lymph node involvement in breast cancer patients is correlated with a worse prognosis, the impact of extracapsular involvement is still a matter of debate, and the implications of axillary soft tissue involvement are still not fully understood. There is some evidence indicating a decrease in disease-free survival for patients with less than four lymph nodes and with extracapsular extension, while other studies show that extracapsular involvement has no prognostic role in these patients and that the number of positive lymph nodes might matter more. Patients with node-positive disease may present with only lymph node involvement or lymph node involvement plus extracapsular extension and/or axillary soft tissue involvement. The axillary soft tissue involvement can result from either direct lymph node extension through the capsule or direct microscopic spread from the primary tumor. It is pathologically defined in this article as axillary lymphatic channel invasion, axillary soft tissue deposits, axillary blood vessel invasion, or any combination of these.
This was a retrospective study of patients with invasive breast cancer who received treatment at Massachusetts General Hospital in Boston, Massachusetts, from 2000 to 2020. Lymph nodes and surrounding adipose tissue were submitted in their entirety for histopathologic evaluation using hematoxylin and eosin stain, and immunohistochemical stains could be added at the pathologist's discretion. Eligibility criteria included primary breast cancer and positive lymph nodes without prior or contralateral breast cancer. 2,162 patients were included. They were divided into four groups according to their axillary pathology: the first group was composed of patients with positive lymph nodes with no additional axillary involvement; the second group of patients with positive lymph nodes and extracapsular involvement; the third group of patients with positive lymph nodes and axillary soft tissue involvement but with no extracapsular extension; and the fourth group of patients with positive lymph node and both extracapsular extension and axillary soft tissue involvement.
Primary endpoints were 10-year rates of local-regional failure, which was defined as recurrence in the breast or chest wall or ipsilateral axilla, axillary failure, and distant metastasis. Among 2,162 patients, 58% had lymph node involvement only, 25% had lymph nodes with extracapsular extension, 3.5% had lymph node involvement with axillary soft tissue involvement, and 14% had lymph node involvement with both extracapsular and axillary soft tissue involvement. 51% of cases of axillary soft tissue involvement were in the form of axillary lymphatic channel invasion. The median follow-up was 9.4 years, and 74% of the cohort had hormone receptor-positive breast cancer, 10% had triple-negative disease, and 16
8 min