Hypocomplementemic Urticarial Vasculitis Syndrome Masquerading as Systemic Lupus Erythematosus: A Case Report.

Introduction: Hypocomplementemic urticarial vasculitis syndrome (HUVS) is an infrequent immune complex-mediated condition characterized by nonpruritic urticarial lesions, low serum complement levels, and autoantibodies, associated with systemic manifestations like arthralgia/arthritis, angioedema, ocular inflammation with conjunctivitis, episcleritis, uveitis, renal, gastrointestinal, and pulmonary involvement. HUVS and systemic lupus erythematosus (SLE) overlap and the criteria for identifying HUVS as an entity distinct from SLE are lacking. Despite the diagnostic criteria established by Schwartz et al.

Osmotic Tubulopathy and Acute Thrombotic Microangiopathy in a Kidney Transplant Recipient With a Breakthrough SARS-CoV-2 Infection.

Acute kidney injury is a known complication of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection for which many different pathophysiological processes have been reported. Here, we present a case of a 45-year-old kidney transplant recipient with a breakthrough SARS-CoV-2 infection complicated by an episode of acute kidney injury 26 months after transplant. She had minimal respiratory symptoms, pancytopenia, mild hematuria, and proteinuria.