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Kidney and upper urinary tract cancers account for approximately 54,000 cases every year in the United States, and represent about 3.7% of adult malignancies, with more than 13,000 annual deaths. Classification of renal tumors is typically based on histomorphologic characteristics but, on occasion, morphologic characteristics are not sufficient. Each of the most common histologic subtypes harbors...
Small cell osteosarcoma is a rare bone tumor of high-grade malignancy that most often arises in the metaphysis of long bones in the second decade of life. Cytogenetic and molecular genetic findings in small cell osteosarcoma are poorly defined. Conventional cytogenetic analysis of a small cell osteosarcoma arising in the proximal tibia of a 9-year-old male revealed a diploid chromosomal complement...
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