The reports of purpura nephritis in senile patients are few. We experienced a senile case of Schönlein-Henoch's purpura complicated purpura nephritis. Here, we report this rare and interesting case. The patient was a 67-yr-old man. Purpura appeared on his limbs after he caught a cold. On to have further examination for his purpura, he admitted to the department of dermatology, He was diagnosed as anaphylactoid purpura by skin biopsy. Later abdominal pain and arthralgia appeared. Because of the appearance of proteinuria, hematuria and many urinary sediments, he transferred to the second department of internal medicine of the same hospital. At the admission, marked proteinuria and many red blood cell, hyaline casts, tatty casts, oval fat body, and fatty granules appeared on urinalysis. IgA increased in immuno-globulins. He underwent renal biopsy. In his kidney tissue, light microscopic finding revealed mesangeal proliferation and mesangeal interposition. In immunofluorescence examination, IgA was deposited at mesangeal region. In electron microscopic finding, electron dense deposit was found at mesangeal and subendothelial legion. From these examination, he was diagnosed Schönlein-Henoch's purpura nephritis. He was the oldest case in whom renal biopsy were performed on the diagnosis of this disease.
