急性间质性肾炎是肾小管及肾间质的急性炎性疾病。镜下所见为间质浮肿和淋巴细胞、浆细胞、单细胞及中性白细胞，间质纤维化不明显。临床上表现为急性肾功能低下（急性肾衰竭），早期如能及时针对病因治疗，通常能完全恢复。为了明确诊断，必须进行病理学检查，但在以往的有关 Acute interstitial nephritis is an acute inflammatory disease of the renal tubules and the renal interstitium. Microscopic findings of interstitial edema and lymphocytes, plasma cells, single cells and neutrophils, interstitial fibrosis was not obvious. Clinical manifestations of acute renal failure (acute renal failure), early if timely treatment for the cause, usually can be completely restored. In order to confirm the diagnosis, pathological examination must be carried out, but in the past