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Hyper dense renal masses a computed tomographic manifestation of hemorrhagic renal cysts

Hyper dense renal masses a computed tomographic manifestation of hemorrhagic renal cysts

Radiology 150(1): 207-212

Eleven patients with sharply circumscribed round to ovoid renal cysts measuring 70-90 H on CT [computed tomography] are reported. The cysts were hyperdense on unenhanced scans, measuring 30-60 H greater than the adjacent parenchyma and either hypodense, isodense or hyperdense on enhanced scans. Four patients had polycystic kidney disease; of the other 7 patients, the cysts were cortical in 6 and parapelvic in 1. Eight patients had a solitary cyst and 3 had multiple cysts. Sonography demonstrated internal echoes and/or lack of increase through-transmission in 6 patients. Pathological analysis was available in 6 cases and indicated a benign, hemorrhagic renal cyst. This hyperdense CT appearance is characteristic of some hemorrhagic renal cysts although differentiation between benign and malignant cysts requires cyst puncture and/or surgery.

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Accession: 005601934

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