Pure colloid carcinoma of the breast: About a rare case

Introduction: Colloid carcinoma of the breast, also known as mucinous or gelatinous carcinoma, is a rare histological form of cancer. It is characterized by the production of extracellular mucus. Two types of colloid carcinoma are distinguished: pure colloid carcinoma, and mixed colloid carcinoma. Presentation of case: We report a rare case of a 48-year-old patient with a history of infiltrating carcinoma of the left breast, treated with surgery, radiotherapy, chemotherapy, and hormonal therapy in 2013, presented with pure mucinous colloid carcinoma of the right breast for which she underwent a lumpectomy with axillary dissection, radiotherapy is planned. Discussion: The distinction between pure and mixed colloid carcinoma is significant because it determines the therapeutic approach and prognostic impact. The prognosis for the mixed form, which closely resembles invasive ductal carcinomas, is bleaker compared to the pure form. Overall survival for women with mucinous carcinoma is better than that for infiltrating carcinoma, underscoring the importance of accurate diagnosis. Surgery remains the most effective first-line treatment for managing these cancers. Conclusion: The overall survival of women with mucinous carcinoma is better than that of infiltrating carcinoma. Surgery remains the best first-line treatment.