A Case Report of Accessory Breast Cancer in the Anterior Chest Wall

Main Article Content

Nayla Robledo, MD Maria Jose Chico, MD Maria Paz Swiecicki, MD Maria Contos, MD Karina Alejandra Pesce, MD, PhD Pamela Causa Andrieu, MD


We present and discuss a case report of a 70-year-old patient with a primary carcinoma in accessory breast tissue in the anterior chest wall.

 Accessory breast tissue has a reported incidence of 0.3% to 6% in the general population, resulting from an incomplete involution of the mammary milk line. It usually presents as a palpable mass. The most frequent localization of accessory breast tissue and its possible pathologies is the armpit, although it can occur in the inframammary region and rarely on thighs, perineum, groin, or vulva.

 The diagnosis is mainly clinical, but imaging findings may be helpful to confirm the suspicion because they are similar to breast cancer within the breast. Ultrasound is the most useful radiological method to evaluate these lesions and guide the suspected diagnosis together with the clinical presentation.

Treatment should be performed under the same principles as breast cancer, both surgical and systemic therapies. The prognosis of accessory breast carcinoma may be poor in cases with delayed diagnosis compared to native breast cancer.

Keywords: Accessory breast tissue, Breast carcinoma, Ectopic breast tissue

Article Details

How to Cite
ROBLEDO, Nayla et al. A Case Report of Accessory Breast Cancer in the Anterior Chest Wall. Medical Research Archives, [S.l.], v. 10, n. 6, june 2022. ISSN 2375-1924. Available at: <https://esmed.org/MRA/mra/article/view/2820>. Date accessed: 17 apr. 2024. doi: https://doi.org/10.18103/mra.v10i6.2820.
Case Reports


1. Hallam S, Aggarwal A, Predolac D, Cunnick G, Ashford R. Primary ectopic breast carcinoma in a supernumerary breast arising in the anterior chest wall: a case report and review of the literature. J Surg Case Rep. Dec 16 2013;2013(12)doi:10.1093/jscr/rjt107
2. Laor T, Collins MH, Emery KH, Donnelly LF, Bove KE, Ballard ET. MRI appearance of accessory breast tissue: a diagnostic consideration for an axillary mass in a peripubertal or pubertal girl. AJR Am J Roentgenol. Dec 2004;183(6):1779-81. doi:10.2214/ajr.183.6.01831779
3. Miles RC, Amornsiripanitch N, Scheel J. Inflammatory breast cancer in accessory abdominal breast tissue. Radiol Case Rep. Dec 2017;12(4):639-641. doi:10.1016/j.radcr.2017.08.008
4. Khan RN, Parvaiz MA, Khan AI, Loya A. Invasive carcinoma in accessory axillary breast tissue: A case report. Int J Surg Case Rep. 2019;59:152-155. doi:10.1016/j.ijscr.2019.05.037
5. Soares A, Gonçalves J, Azevedo I, Pereira HG. Lobular ectopic breast carcinoma: A case-report. Rep Pract Oncol Radiother. 2013;18(3):189-91. doi:10.1016/j.rpor.2013.03.003