Unusual fat-containing tumors of the kidney: a diagnostic dilemma
| Autor: | Jean Michel Correas, Moreau Jf, F Paraf, S. Merran, P. Melki, Y Chrétien, Olivier Hélénon |
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| Rok vydání: | 1997 |
| Předmět: |
Diagnostic Imaging
Male Pathology medicine.medical_specialty Angiomyolipoma Liposarcoma Kidney urologic and male genital diseases Malignancy Diagnosis Differential medicine Carcinoma Humans Radiology Nuclear Medicine and imaging Renal oncocytoma Carcinoma Renal Cell neoplasms business.industry Middle Aged Lipoma medicine.disease Kidney Neoplasms medicine.anatomical_structure Female Lymph business Calcification |
| Zdroj: | Scopus-Elsevier |
| ISSN: | 1527-1323 0271-5333 |
| DOI: | 10.1148/radiographics.17.1.9017804 |
| Popis: | Unusual fat-containing renal tumors in a series of 27 cases comprised five categories: atypical and complicated angiomyolipomas (AMLs) (n = 15), including AMLs with extrarenal growth (n = 5), AMLs with undetectable fat (n = 4), and hemorrhagic AMLs (n = 6); fat-containing renal cell carcinomas (RCCs) (n = 9); lipoma (n = 1); liposarcoma (n = 1); and fat-containing renal oncocytoma (n = 1). Fat was present within RCCs by the following mechanisms; lipid-producing necrosis within a large RCC (n = 2), intratumoral bone metaplasia with fatty marrow elements and calcification within a small RCC (n = 2), and entrapment of perirenal (n = 4) or sinus (n = 1) fat by large irregular RCCs. Fat-containing RCC must be considered in cases of fat-containing renal tumors, even though the presence of intratumoral fat is characteristic of AML. A dedicated computed tomography scanning protocol and strict diagnostic criteria are mandatory for accurate diagnosis. Malignancy should be suspected on the basis of the following criteria: presence of intratumoral calcifications; large, irregular tumor invading the perirenal or sinus fat; large necrotic tumor with small foci of fat; and association with nonfatty lymph nodes or venous invasion. |
| Databáze: | OpenAIRE |
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