J Korean Soc Radiol.  2014 Sep;71(3):132-135. 10.3348/jksr.2014.71.3.132.

Primary Renal Osteosarcoma Presenting as Hydronephrotic Kidney: A Case Report with Imaging Findings and a Literature Review

Affiliations
  • 1Department of Radiology, Dankook University Hospital, Dankook University College of Medicine, Cheonan, Korea. sirenos@hanmail.net
  • 2Department of Pathology, Dankook University Hospital, Dankook University College of Medicine, Cheonan, Korea.

Abstract

Primary renal osteosarcoma is an extraordinarily rare primary tumor of the kidney. It occurs mostly in middle-aged and older individuals, and generally presents with non-specific symptoms such as abdominal pain, weight loss, palpable mass, and gross hematuria. Radiographically bizarre renal calcifications are often indicative of this uncommon neoplasm. Herein we report a case of primary osteosarcoma in a hydronephrotic kidney of a 76-year-old man, who developed lung metastasis soon after a radical nephrectomy. To the best of our knowledge, this is the first computed tomography based report of a patient with the hydronephrotic form of primary renal osteosarcoma.

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