Abstract
After the Shimamoto's report, the author investigated on 33 cases of so-called essential renal bleeding, especially on focal infectious renal bleeding.
Out of 33 cases, 9 cases (27 per-cents) were focal infectious renal bleeding and 24 cases (73 per-cents) were due to other causes.
Twenty-two cases had chronic inflammatory lesions in the tonsils and teeth, but in only 9 cases (40.9 per-cents) their tonsils and teeth were apparent foci of renal bleeding and their inflammatory processes were much severe.
The etiology of essential renal bleeding except the focal infectious renal bleeding is still obscure at present time and I suppose in some cases the allergy must be related on.
