多房囊性肾细胞癌2例报告及文献复习

目的：阐明多房囊性肾细胞痛（MCRCC）的概念及其鉴别诊断要点。方法：报告2例MCRCC的临床资料,结合文献进行归纳分析。结果：MCRCC病例占同期肾癌病例的0．67％。1例经影像学检查误诊为肾囊肿,1例经B超检查怀疑为“囊性肾癌”,而CT及MRI均误诊为多发性肾囊肿并结石。2例均先行保留肾单位的手术治疗,于术后病检确诊为MCRCC,然后再行根治性肾切除术。结论：MCRCC足肾癌中一种罕见的特殊类型,恶性度低,不同于其他类型的“囊性肾癌”。其术前诊断主要依赖影像学（CT或B超）检查,与良性肾囊性病变的鉴别诊断较困难;因此,确诊通常依赖术后的病理学诊断,同时需与其他类型的“囊性肾癌”相鉴别。

Multilocular Cystic Renal Cell Carcinoma: Two Cases Report and Literature Review

Objective：To elucidate the concept and differential diagnosis of multilocular cystic renal cell carcinoma（MCRCC）. Methods： Two cases of MCRCC were reported and the correlative literatures were reviewed. Resuits：Out of the 305 cases with renal cell carcinoma, 2 cases（0.67 %）were classified as MCRCC. One case was misdiagnosed as renal cyst by imageology, one case was diagnosed as cystic renal cell carcinoma by ultrasonography, which was misdiagnosed as multiple renal cystic disease with calculus by both CT and MRL At first, 2 cases were both treated with nephron sparing surgery, then a definite diagnosis of MCRCC was made by posloperative pathology, finally they were treated with radical nephrectomy. Conclusions： MCRCC is a scarce and special type of the renal cell carcinoma which owns low malignant potential and differs from other kinds of cystic renal cell carcinoma. The preoperative differential diagnosis of MCRCC mainly depends on imaging studies （CT or B ultrasonic etc）, however it is difficult to he differentiated from other benign cystic renal diseases. Therefore, final diagnosis usually depends on the postoperative pathology. In addition, MCRCC need to be differentialed from cystic renal cell carcinoma.