Evolution of Renal Cysts to Anaplastic Sarcoma of Kidney in a Child With DICER1 Syndrome
Pediatric Blood & Cancer2016Vol. 63(7), pp. 1272–1275
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Mona K. Wu, Catherine Goudie, Harriet Druker, Paul S. Thorner, Jeffrey Traubici, Ronald Grant, Steffen Albrecht, Evan Weber, Adrian Charles, Jack R. Priest, Marc R. Fabian, William D. Foulkes
Abstract
Anaplastic sarcoma of kidney (ASK) is a rare neoplasm recently associated with DICER1 mutations. We report a child with germline DICER1 mutation who developed ASK in preexisting septated renal cysts, which were likely cystic nephroma. From age 2.5 to 6 years, sonographic imaging illustrated changes in the size and number of renal cysts, followed at age 8.8 years by a mass, pathologically an ASK. Lung cysts resected in infancy were diagnosed retrospectively as pleuropulmonary blastoma. Both tumors had acquired somatic DICER1 mutations. Ultrasonographic evolution of renal cysts to ASK has not previously been documented. Children with both pulmonary and renal cysts are candidates for DICER1 mutation testing.
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