Ectopic Carcinoma Breast: A Rare Presentation

Abstract

INTRODUCTION: Ectopic breast tissue is a rare entity. It may be present at any site along the embryonic mammary streak, from axilla to valve. Having normal breast tissue, it responds to hormonal influences and is at risk of breast disease, paralleling the anatomically correct breast. Carcinoma of ectopic breast tissue much rare. Due to its rarity and low index of suspicion, it often diagnosed at later stage compared to breast cancer. We report about 45 yrs. old premenopausal lady came with complaints of a swelling below right inframammary region for 3 months. Tissue diagnosis suggested metastatic deposit from occult adenocarcinoma. Immunohistochemistry clinched the diagnosis of invasive ductal carcinoma. Subsequently patient was subjected to right modified radical mastectomy with subsequent chemo-radiotherapy and endocrine therapy.