腎嚢胞性病変を伴う腎細胞癌
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腎嚢胞性病変を伴う腎細胞癌について,AFIPのHartmanらの分類を中心に,形態的および組織学的に整理,考察を試みた.また,complicated renal cystic massの鑑別について,自験例を提示しながら画像診断,嚢胞穿液の検査所見に関し文献的考察を行ったApproximately 15% of cases of renal cell carcinoma (RCC) present cystic configuration on radiologic and pathologic examination. The mechanisms of cyst formation in RCC are intrinsic multilocular cystic growth (multiloculated renal cell carcinoma: MCRCC), unilocular cystic growth (cystadenocarcinoma), cystic necrosis and tumor growth from the epithelial lining of a preexisting cyst. These cystic lesions accompanying RCC are often difficult to differentiate from the multiloculated renal cyst (MLC) or other benign cystic lesions such as hemorrhagic cyst and so on. Differential diagnosis of the complicated renal cystic lesions is discussed in this review.