Heparin-induced Thrombocytopenia with Anaphylactoid Reaction during Hemodialysis.

We herein report a 64-year-old man with heparin-induced thrombocytopenia accompanied by anaphylactoid reaction during hemodialysis. The patient was admitted to our hospital with acute myocardial infarction and developed acute kidney injury after percutaneous coronary intervention. When maintenance hemodialysis with heparin was initiated, the patient developed an anaphylactoid reaction with dyspnea, hypotension, nausea, and vomiting.

A non-immunocompromised host with nontuberculous mycobacteria-associated tubulointerstitial nephritis.

A 50-year-old man was admitted to our hospital with the complaints of fever and general malaise. He had no history of human immunodeficiency virus (HIV) infection or treatment with immunosuppressive agents. We performed renal biopsy to investigate possible acute kidney injury.

Renal intravascular large B-cell lymphoma predominantly localized in peritubular capillaries.

We report on a 70-year-old woman with intravascular large B-cell lymphoma, in whom the renal lesion was localized in the peritubular capillaries. The patient complained of fatigue, general malaise, and unsteadiness when walking. Laboratory tests showed anemia, increased C-reactive protein, and mild renal failure, with a serum creatinine level of 1.

A case of primary (AL) amyloidosis with predominantly vascular amyloid deposition in the kidney.

We report a 70-year-old man with primary (AL) amyloidosis with predominantly vascular deposition of amyloid diagnosed by renal biopsy, who was successfully treated using two chemotherapy regimens. There was rapid elevation of the serum creatinine level without remarkable proteinuria or hematuria. Renal histological examination showed some thickened arterial walls with amyloid fibril accumulation, and only a small amount of amyloid deposition in the glomeruli.