Which conditions make kidney transplantation contraindicated for dialysis patients?

The correct answer is the diagnosis of non-Hodgkin lymphoma currently undergoing chemotherapy because the presence of an active malignancy significantly impacts the eligibility for kidney transplantation. Transplantation requires careful consideration of the patient's overall health and the potential risks associated with both the surgery and the immunosuppressive therapy that follows. Patients with active cancer are typically at a higher risk for complications, including the possibility of cancer recurrence, which can hinder successful recovery and graft acceptance.

Other conditions, such as a history of controlled hypertension, previous kidney stones, and recent minor surgeries, might not independently pose serious risks or barriers to transplant eligibility. Controlled hypertension can typically be managed effectively, and previous kidney stones do not automatically disqualify someone from receiving a transplant if they are not currently a significant concern. Recent minor surgeries may also not affect transplant eligibility, provided the patient is stable and there are no complications.