Objective: Thre are multiple subtypes of breast cancer with diffrent biological and pathological features and accordingly exhibit diffrent clinicalbehaviors. Th aim of this study was to compare the treatment modalities, clinical features and prognostic characteristics of Mix Mucinous Carcinomas (MMBC) and other rare tumors of the breast.Materials and Method: A total of 2152 patients who were operated on for breast cancer in our clinic between 2010-2019, with pathologicaldiagnoses of tubular, pure mucinous, mix mucinous or papillary carcinoma were enrolled in the study. Patients were divided into two groups as mixmucinous patients (Group1) and other rare tumors (Group2). Th demographic, clinical and prognostic characteristics and treatment approacheswere compared between Groups, and additionally between the subtypes of Group 2.Results: 42 patients participated in our study. Group 1 consisted of 7 patients, and Group2 consisted of 35 patients. Th subtypes in Group2 werepapillary (n=21), pure mucinous (n=10) and tubular (n=4). Progesterone Receptor Positivity was found to be signifiantly higher in Group 2 patientsthan in Group1 patients (p=0.005, p<0.05). Multicentricity rates in the tumors of the patients in Group1 were found to be statistically signifiantlyhigher than the patients in Group 2 (p=0.024, p<0.05). In subtype analysis in Group2, there were no statistically signifiant diffrences parametersin the subgroups (p>0.05). Mean survival was 19.5+5.6 (8.5-30.5) months in Group 1 and 46.3+5.2 (36.1-56.6) months, in Group2 when evaluated separately (p:0.002).Conclusion: Th prognosis of pure mucinosis (PMBC) and other atypical cancers of the breast compared to the (MMBC) is quite good. Rarepathological types of breast cancer can have favorable outcomes when treated with necessary oncological principles.