Gallbladder Cancer Concomitant With Para‐Aortic Paraganglioma: A Case Report. - Murakami, Hisashi; Okubo, Satoshi; Naka, Yutaro; Kudo, Noritaka; Takazawa, Yutaka; Kobayashi, Masahiro; Matsumura, Masaru; Shindoh, Junichi; Hashimoto, Masaji (Clinical Case Reports, 2025)