Sampling of Internal Mammary Chain Lymph Nodes during Breast Reconstruction by Free Flaps from the Abdomen

The role of internal mammary chain lymph node removal in breast cancer is still not clarified. Although it has been proven that elective dissection of the internal mammary chain nodes does not improve survival, their selective treatment based on sentinel lymph node biopsy is under evaluation. There is another possibility to establish the status of internal mammary chain nodes - sampling of the nodes during the preparation of the site for microvascular anastomosis to the internal mammary artery and vein for free flap transfer. From August 2002 to December 2003, 54 free flaps were performed for breast reconstruction. In 11 cases, an internal mammary chain lymph node was harvested. A positive internal mammary chain node was found in only one case. In this case, the treatment policy was changed by adding irradiation to the internal mammary chain. The sampling of internal mammary chain nodes during preparation of the site for microvascular anastomosis to the internal mammary artery and vein should be a part of the reconstructive procedure after total mastectomy for invasive breast cancer because it could change the treatment plan.

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Impact of Surgically and Radiologically Detected Incidental Internal Mammary Lymph Node Enlargement in Breast Cancer Patients Undergoing Free-Flap Breast Reconstruction

Journal of Reconstructive Microsurgery Open ◽

10.1055/s-0038-1642626 ◽

2018 ◽

Vol 03 (01) ◽

pp. e32-e40 ◽

Cited By ~ 1

Author(s):

Haitham Khalil ◽

Maninder Kalkat ◽

Marco Malahias ◽

Saif Rhobaye ◽

Tarek Ashour ◽

...

Keyword(s):

Breast Cancer ◽

Lymph Node ◽

Adjuvant Therapy ◽

Breast Reconstruction ◽

Treatment Plan ◽

Comprehensive Treatment ◽

Internal Mammary Lymph Node ◽

Nodal Basin ◽

Internal Mammary

Background The internal mammary lymph node (IMLN) basin is considered the second most important regional nodal basin in breast cancer. IMLNs are often not detected radiologically and left untreated, with symptomatic recurrence being 0.1%. Challenges in accessibility have been an obstacle in achieving a comprehensive treatment plan, especially with undetermined and radiologically enlarged IMLN. Free autologous tissue breast reconstruction is considered the gold standard, and the familiarity of microvascular surgeons in using the internal mammary vessels (IMVs) puts them in a unique position to shed more light on the natural pathological process of IMLN metastases. Materials and Methods A retrospective data analysis study was conducted evaluating 270 patients who underwent 307 free flaps for breast reconstruction using the IMV in the period between 2009 and 2017. Patient's demographics and clinicopathological data including IMLN harvest, radiological, operative details, adjuvant therapy, postoperative morbidity, and follow-up outcome data were analyzed. Results Eighty-nine enlarged IMLNs were surgically retrieved from 30.7% (83/270) of the patients (73 delayed, 10 immediate breast reconstructions) with an age range of 29 to 77 years (mean: 45). Eighty six were incidentally encountered during surgery, whereas in three, the enlarged IMLN was preoperatively, radiologically determined and biopsied during computed tomography (CT) scan staging and was retrieved subsequently during surgery. IMLN metastases were confirmed in 8.4% (7/83) of the patients in whom IMLNs were retrieved with subsequent modification of the proposed adjuvant therapy. The follow-up period ranged from 3 to 84 months (mean: 42) for the involved IMLN patients. Two patients (28% [2/7]) showed signs of disease progression with mortality. Conclusion Microvascular surgeons in a multidisciplinary setting would provide a valuable role in improving outcomes of patients with IMLN metastases through better diagnosis and staging of incidentally enlarged metastatic IMLN and provision of an effective approach for locoregional disease control.

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