Sentinel lymph node mapping of a breast cancer of the vulva: Case report and literature review

Figure 1 Ectopic breast tissue has been previously reported in various locations along the primitive milk line, from the axilla to the vulva.

Figure 2 Estrogen receptor staining of primary tumor (A), Her2neu staining of primary tumor (B), metastasis to the lymph node (C), progesterone receptor staining of primary tumor (D).

Figure 3 Patient returned to the operating room with preoperative technetium 99 lymphoscintography and lymphazurin blue (injected into the previous left surgical site) lymph node localization.

Figure 4 Ectopic breast tissue originates in the fetus at the ectodermal mammary streak extending from the axilla to the groin. RT: Radiation therapy.