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Polycythemia secondary to multiloculated renal cyst in a child.

Debra S Heller1, Anne Hurlet, Nishith Bhattacharya

  • 1Department of Pathology, Division of Pediatric Hematology, UMDNJ-New Jersey Medical School, Newark, NJ 07103, USA.

Journal of Pediatric Surgery
|October 16, 2002
PubMed
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A pediatric renal cyst caused polycythemia in a 10-year-old boy. Surgical removal of the small cyst resolved the polycythemia and normalized erythropoietin levels.

Area of Science:

  • Pediatric Nephrology
  • Oncology
  • Hematology

Background:

  • Polycythemia, a condition of elevated red blood cells, is occasionally linked to pediatric kidney tumors.
  • Erythropoietin (EPO) is a hormone that stimulates red blood cell production and can be overproduced in certain conditions.

Observation:

  • A 10-year-old boy presented with polycythemia and high erythropoietin levels.
  • Imaging revealed a small, multiloculated renal cyst measuring 0.5 cm.

Findings:

  • The patient's polycythemia and elevated erythropoietin resolved completely after the surgical resection of the renal cyst.
  • This case highlights an unusual association between a very small renal cyst and polycythemia.

Implications:

Related Experiment Videos

  • Renal cysts should be considered in the differential diagnosis of pediatric polycythemia, even when small.
  • This finding may prompt further investigation into the mechanisms linking renal cysts to erythropoietin production.