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Mucinous Carcinoma of Breast : Types A and B

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Comments:
Some authors have proposed subclassification of mucinous carcinomas into types A and B. Type A mucinous carcinomas have more abundant extracellular mucin and are seen in younger patients. Type B tumors show neuroendocrine differentiation and have less abundant extracellular mucin than type A tumors. There are no significant clinical or prognostic differences between the two groups and it is not necessary to differentiate between the two in pathology reports at this time.

slide 18 of 30