TY - JOUR T1 - Ectopic breast carcinoma presenting as sebaceous cyst left axilla JF - BMJ Case Reports JO - BMJ Case Reports DO - 10.1136/bcr-2018-224789 VL - 12 IS - 1 SP - e224789 AU - Uzma Jalali AU - Alhad Dhebri AU - Eszter Karip AU - Roger Hunt Y1 - 2019/01/01 UR - http://casereports.bmj.com/content/12/1/e224789.abstract N2 - A 43-year-old woman with a positive family history of breast cancer presented with a painless lump in her left axilla for 2 years. Clinical diagnosis was a left axillary sebaceous cyst as the lump was inseparable from the skin. The lesion was excised under local anaesthesia and reported as breast tissue widely infiltrated by an invasive ductal carcinoma (grade 2). The malignancy was not involving the epidermis but <1 mm away from deeper margins. Re-excision of the deeper tissue with an axillary sentinel lymph nodes biopsy was performed and deep margins were reported to be tumour-free with no nodal involvement. ER -