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Breast Lesions and CarcinomasBreast Cancer Treatment StudiesCancer Risks and Factors

Breast collision tumor: malignant phyllodes tumor and synchronous ductal carcinoma, case report

Marcelo Chávez Díaz, D. Vela, María del Rosario Cueva Pérez

2026.1.1Revista de Senologia y Patologia Mamaria

DOI: 10.1016/j.senol.2025.100732

Abstract

Collision tumors are defined as the presence of two tumors with different histologies in the same organ. Associations of lymphoma, sarcomas, phyllodes tumors, and carcinomas have been described in the breast. Phyllodes tumors are fibroepithelial tumors that account for 1% of breast tumors. They are classified as benign, borderline

Citation format

DÍAZ, Marcelo Chávez; VELA, D.; PÉREZ, María del Rosario Cueva. Breast collision tumor: Malignant phyllodes tumor and synchronous ductal carcinoma, case report. Revista de Senologia y Patologia Mamaria, 2026, 39(1): 100732.