AUTHOR=Lin Xiaohui , Liao Tingting , Yang Yuting , Zhou Jingzhi , Ma Jie TITLE=Mucinous carcinoma in a male breast with skin ulcer: a case report JOURNAL=Frontiers in Oncology VOLUME=15 YEAR=2025 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2025.1521704 DOI=10.3389/fonc.2025.1521704 ISSN=2234-943X