Testicular tumors: prospective analysis of real-time US patterns and abdominal staging.

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Abstract
Echomorphological features of 57 testicular lesions (48 neoplasms, nine benign lesions) were analyzed prospectively by means of high-resolution real-time ultrasonography (US). There was a broad spectrum of texture patterns for testicular malignancies, 92% of which exhibited a predominantly decreased echogenicity compared with that of normal tissue. US findings alone could not be used to make a specific prediction of malignant diseases or to classify a neoplasm histologically. However, different kinds of tumors exhibited characteristic echomorphologic feautures that corresponded to their gross morphologic appearance; a knowledge of these echomorphologic features is extremely useful for the US differentiation of tumors from nonneoplastic scrotal pathologic conditions. All neoplasms in this series displayed distinct abnormalities in parenchymal texture, and all were detected with US. The sensitivity and predictive value of a normal sonogram were as high as 100%. With regard to the detection of retroperitoneal lymph node metastases from testicular tumors, abdominal US had an overall accuracy rate of 96% and was of superior diagnostic value compared with bipedal lymphangiography.

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