髓质海绵肾(medullary sponge kidney,MSK)是一种先天性肾髓质囊性病变,一般早期常无症状,故给早期诊断带来困难。以往 MSK 影像诊断主要依靠排泄性尿路造影(IVP),认为 CT 对诊断意义不大。但近年来随着 CT 普及应用,MSK 早期诊断率不断提高。现将东南大学附属中大医院1例经 CT 诊断为 MSK 的病例报道如下,以探讨 CT 对 Medullary sponge kidney (MSK) is a congenital renal medullary cystic lesions, usually asymptomatic early, it is difficult to make early diagnosis. In the past MSK imaging diagnosis mainly rely on excretory urography (IVP), that the diagnosis of CT is of little significance. However, with the popularity of CT in recent years, MSK early diagnosis rate continues to increase. A case of the diagnosis of MSK by CT at the Affiliated Zhongda Hospital of Southeast University is reported as follows to explore the CT