Abstract Background Renal transplant recipients (RTRs) have a 3- to 5-fold higher risk of developing malignant tumors than the general population. with new malignant tumors after transplantation considered to be the leading cause of death in RTRs. In pathological practice. it is rare for neoplasms with different histology to be located in the same organ. https://poolsproductscanadas.shop/product-category/above-ground-liner/