Reed J R, Rutsky E A, Witten D M
South Med J. 1984 Jul;77(7):909-12. doi: 10.1097/00007611-198407000-00028.
We observed a 30-year-old woman in whom a large mass in the right lower quadrant and bilaterally enlarged cystic kidneys with markedly distorted collecting systems by excretory urography suggested a diagnosis of polycystic renal disease (PRD); but the linear and cystic dilatation of collecting tubules, many of which contained numerous calculi, was typical of medullary sponge kidney (MSK). Arteriography and CT scanning clearly showed that both the calcifications and the cysts were confined to the medullary portions. The cortical layer was entirely free of cysts except where large medullary cysts protruded to the surface. In patients in whom MSK imitates PRD, these conditions can be distinguished by CT scanning and arteriography.
我们观察了一名30岁女性，其右下象限有一巨大肿块，排泄性尿路造影显示双侧肾囊肿增大且集合系统明显变形，提示多囊肾病（PRD）诊断；但集合小管呈线性和囊性扩张，其中许多含有大量结石，这是髓质海绵肾（MSK）的典型表现。动脉造影和CT扫描清楚地显示钙化和囊肿均局限于髓质部分。皮质层完全没有囊肿，除非大的髓质囊肿突出到表面。在MSK模仿PRD的患者中，这些情况可通过CT扫描和动脉造影加以区分。
