IgA 肾小球肾炎是目前借助于肾活检诊断的最常见的肾小球肾炎。以男性多见,发病高峰年龄为20～30岁,分原发性与继发性。后者可见于肝硬化、谷蛋白过敏、粘液腺癌特别是消化道和呼吸道腺癌、疱疹样皮炎、IgA 骨髓瘤和蕈样真菌病等。本病在病理形态上为一系列肾小球损害,表现为微小病变型、局灶性 IgA glomerulonephritis is the most common glomerulonephritis currently diagnosed by means of renal biopsy. More common in men, the peak incidence age of 20 to 30 years old, divided into primary and secondary. The latter can be seen in cirrhosis, gluten allergy, mucinous adenocarcinoma, especially gastrointestinal and respiratory adenocarcinoma, dermatitis herpetiformis, IgA myeloma and mycosis fungoides and so on. The disease in the pathological morphology of a series of glomerular damage, showed minor lesions, focal