Tumor-Related Pericardial and Myocardial Infiltration in Diffuse Large B-Cell Lymphoma Presenting as an ST-Elevation Myocardial Infarction Mimic: A Case Report. - Burkitbayev, Zhandos; Bilmakhanbetova, Ainur; Omarbek, Aliya; Aidarbekova, Kulshat; Zhumabekova, Assel; Tanyrbergenova, Aigerim; Kochiev, Bairam; Kolesnev, Alexandr (Case Reports in Oncology, 2026)