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What is A middle aged female presented with a 4cm mass in upper outer quadrant of the breast. Biopsy showed densely packed cells within large lakes of mucin. Which of the following is the most likely diagnosis of this patient? and explain in detail?
Colloid (mucinous) carcinoma is an invasive variant. Colloid carcinoma has a glistening surface and mucoid consistencyon cut section Composed ofsmall clusters of epithelial cells,occasionally forming glands,floating in pools of extracellular mucin. In its pure form,colloid carcinomahas a considerablybetter prognosisthaninfiltrating ductal or lobular carcinoma Abundant mucin productionisnot a featureof the other choices. Diagnosis:Mucinous carcinoma of the breast