Secretory carcinoma breast: A rare cytodiagnosis.

Secretory carcinoma is a rare low grade malignant breast carcinoma of children and adults. Since patients are often young and presents with indolent breast lump in the breast, a high degree of suspicion is often needed for the clinical diagnosis. Fine needle aspiration cytology (FNAC) is often the primary investigation, and because of the indolent clinical presentation, rarity of tumour and unanticipated cytological findings a primary cytological diagnosis of secretory carcinoma is often difficult. We present a case of 13-year-old female, presented with a well defined mobile  right breast lump. The aspiration cytology revealed highly cellular smears consisted of singly scattered and loosely cohesive cluster of monomorphic cell population of round to ovoid cells with bland cytological appearance in background of thick mucinous material, leading to cytological diagnosis of secretory carcinoma.  A primary diagnosis of secretory carcinoma on FNAC can provide early and definite surgical management including simple mastectomy with axillary lymph node resection recommended for treatment of secretory carcinoma.