TumorChain: Interleaved Multimodal Chain-of-Thought Reasoning for Traceable Clinical Tumor Analysis. - Sijing Li; Zhongwei Qiu; Jiang Liu; Wenqiao Zhang; Tianwei Lin 001; Yihan Xie; Jianxiang An; Boxiang Yun; Chenglin Yang; Jun Xiao 001; Guangyu Guo 001; Jiawen Yao; et al. (CoRR, 2026)