27 Neuroendocrine tumour of the breast: A case report & Literature review

Abstract

Abstract Introduction Neuroendocrine differentiation in breast carcinomas was first described by Feyrter and Hartmann in 1963, based on positive silver staining in mucinous carcinomas of the breast. NEBC are heterogeneous group of rare breast tumours which account for < 0.1 % of breast tumour and < 1% of neuroendocrine tumours. Case A 65-year-old female presented with a 12 x 10 cm non-tender hard globular slightly mobile mass in upper medial /inner quadrant of right breast with overlying 2 cm scar mark and bilateral axillary lymphadenopathy. Mammography revealed a BIRADS-4 lesion and FNAC showed atypical cells. Octreotide Scan showed that the mass was neuroendocrine in origin. Further CT imaging showed no other site for metastasis. She was managed with a Right sided modified radical mastectomy (MRM) after multidisciplinary team (MDT) decision. Biopsy of the Lesion showed ER, PR receptor & synaptophysin receptor positivity, negative Her 2-neu status, ki-67 proliferation index of 10% & grade II NET. Conclusion Primary neuroendocrine tumours of the breast are infrequent tumours that appear in women aged 60–70 years. Their diagnosis is complex as they lack defining clinical and radiological characteristics. Their low incidence makes it impossible to establish an optimal treatment protocol.