The prognosis of MCB can vary between different sub-classifications, which, given the heterogeneity of classification systems, makes assigning prognoses difficult. However, the prognosis for MCB is generally poor. Predictors associated with worse prognosis of MCB include age younger than 39 years at presentation, tumor invasion of the skin, and squamous cell carcinoma spread to the lymph nodes. The 5-year survival rate for MCB varies by classification, and ranges from 49% in the most deadly classifications to 64%.
Metaplastic carcinoma
Anaplastic carcinoma
Verrucous carcinoma
Adenosquamous carcinoma
Spindle cell carcinoma
Mucinous carcinoma
Adenosarcoma
Mucoepidermoid carcinoma