MUCINOUS BREAST-CARCINOMA - SINGLE CUTANEOUS METASTASIS

BACKGROUND. Mucinous or colloid carcinoma is an uncommon breast neoplasm which is generally associated with a good prognosis. Metastases tend to occur late in the disease and are found principally in lymph nodes, lungs, and bones. The longest latency period reported for development of a distant metastasis is 30 years after primary resection of the tumor. OBJECTIVE. To describe a case of cutaneous metastasis from a mucinous breast carcinoma occurring 22 years after initial resection and review the literature. RESULTS. Comparison of the primary tumor with the metastatic lesion showed identical histology. Review of the literature revealed this case represents the second longest latency for a distant metastasis from mucinous breast carcinoma and the unusual involvement of the skin. CONCLUSION. This represents the second longest reported latency period for the development of a distant metastasis from mucinous breast carcinoma and its rare occurrence in the skin.