Occult breast cancer may originate from ectopic breast tissue present in axillary lymph nodes.
Mitsuo TeradaYayoi AdachiMasataka SawakiMasaya HattoriAkiyo YoshimuraGondo NaomiHaruru KotaniMadoka IwaseAyumi KataokaSakura OnishiKayoko SuginoMakiko MoriNanae HorisawaEiichi SasakiYasushi YatabeHiroji IwataPublished in: Breast cancer research and treatment (2018)
It is important to distinguish between "primary" OBC in ALNs and "metastatic" OBC from micro-primary breast tumor. Further studies are required to determine if omission of mastectomy and WBRT is acceptable.