Ileocecal CD5-Positive Diffuse Large B-Cell Lymphoma Presenting with Acute Obstructive Symptoms: A Case Report. - Kashiwagi J; Hanaoka Y; Yoshimitsu H; Wakamatsu M; Takahashi Y; Tomita D; Kureyama Y; Maeda Y; Okazaki N; Hiramatsu K; Fukui Y; Toda S; et al. (Surgical case reports, 2026)