穿刺吸引細胞診で粘液球状様構造を認めた乳腺粘液癌の1例

抄録

We report a case of a 73-year-old woman with mucinous carcinoma of the breast mimicking cytological characteristics of secretory carcinoma. Fine needle aspiration (FNA) disclosed dispersed tumor cells with occasional aggregations consisting of “mucous globular structures (MGS) ” and “bunches of grapes”. There was only a small amount of mucinous materials in the background. Vacuoles or mucoid materials were often encountered in the cytoplasm showing signet-ring cell features. The findings in the present case suggest that FNA of mucinous carcinoma, especially mixed type, may present the formation of “MGS” and “bunches of grapes” previously described as a hallmark of secretory carcinoma.