Kaposi Sarcoma Involving Kidney Allografts: A Report of Two Cases From Qatar and Literature Review.

Immunosuppression in kidney transplantation elevates the risk of malignancies, particularly immune-driven and virus-related cancers like Kaposi sarcoma (KS). KS typically manifests as single or multiple skin lesions following kidney transplantation but can also affect other organs. Involvement of the kidney allograft by KS is exceptionally rare, with only a few cases documented. In this report, we present all known cases of KS involving kidney allografts in adult transplant recipients in Qatar, accompanied by a brief review of the literature.