Tumor-Related Pericardial and Myocardial Infiltration in Diffuse Large B-Cell Lymphoma Presenting as an ST-Elevation Myocardial Infarction Mimic: A Case Report. - Burkitbayev Z; Bilmakhanbetova A; Omarbek A; Aidarbekova K; Zhumabekova A; Tanyrbergenova A; Kochiev B; Kolesnev A (Case reports in oncology, 2026)