MRI of hemorrhagic renal cysts in polycystic kidney disease

P. L. Hilpert; A. C. Friedman; P. D. Radecki; D. F. Caroline; E. K. Fishman; M. A. Meziane; D. G. Mitchell; H. Y. Kressel

doi:10.2214/ajr.146.6.1167

MRI of hemorrhagic renal cysts in polycystic kidney disease

P. L. Hilpert, A. C. Friedman, P. D. Radecki, D. F. Caroline, E. K. Fishman, M. A. Meziane, D. G. Mitchell, H. Y. Kressel

School of Medicine

Research output: Contribution to journal › Article › peer-review

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Abstract

Nine patients with polycystic kidney disease were examined by MRI, CT and sonography. MRI distinguished among simple cysts, cysts complicated by prior hemorrhage, and coexistent renal cell carcinoma. On T1-weighted spin-echo images, simple renal cysts appeared as round, homogeneous, low-signal regions with smooth outer margins and a distinct interface with remaining normal renal parenchyma or adjacent cysts. Hemorrhagic cysts were seen as homogeneous medium- to high-signal intensity regions, and about half of them correlated with hyperdense cyst by CT. In five cases, fluid-iron levels were evident by dependent high-intensity layering within the cysts. Renal cell carcinomas occasionally show high intensity because of hemorrhage, but intratumoral fluid-iron levels have not yet been described. These results suggest that MRI is useful in differentiating between simple cysts, hemorrhagic cysts, and neoplasms when CT and sonography are indeterminate.

Original language	English (US)
Pages (from-to)	1167-1172
Number of pages	6
Journal	American Journal of Roentgenology
Volume	146
Issue number	6
DOIs	https://doi.org/10.2214/ajr.146.6.1167
State	Published - 1986

ASJC Scopus subject areas

Radiology Nuclear Medicine and imaging

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title = "MRI of hemorrhagic renal cysts in polycystic kidney disease",

abstract = "Nine patients with polycystic kidney disease were examined by MRI, CT and sonography. MRI distinguished among simple cysts, cysts complicated by prior hemorrhage, and coexistent renal cell carcinoma. On T1-weighted spin-echo images, simple renal cysts appeared as round, homogeneous, low-signal regions with smooth outer margins and a distinct interface with remaining normal renal parenchyma or adjacent cysts. Hemorrhagic cysts were seen as homogeneous medium- to high-signal intensity regions, and about half of them correlated with hyperdense cyst by CT. In five cases, fluid-iron levels were evident by dependent high-intensity layering within the cysts. Renal cell carcinomas occasionally show high intensity because of hemorrhage, but intratumoral fluid-iron levels have not yet been described. These results suggest that MRI is useful in differentiating between simple cysts, hemorrhagic cysts, and neoplasms when CT and sonography are indeterminate.",

author = "Hilpert, {P. L.} and Friedman, {A. C.} and Radecki, {P. D.} and Caroline, {D. F.} and Fishman, {E. K.} and Meziane, {M. A.} and Mitchell, {D. G.} and Kressel, {H. Y.}",

year = "1986",

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T1 - MRI of hemorrhagic renal cysts in polycystic kidney disease

AU - Hilpert, P. L.

AU - Friedman, A. C.

AU - Radecki, P. D.

AU - Caroline, D. F.

AU - Fishman, E. K.

AU - Meziane, M. A.

AU - Mitchell, D. G.

AU - Kressel, H. Y.

PY - 1986

Y1 - 1986

N2 - Nine patients with polycystic kidney disease were examined by MRI, CT and sonography. MRI distinguished among simple cysts, cysts complicated by prior hemorrhage, and coexistent renal cell carcinoma. On T1-weighted spin-echo images, simple renal cysts appeared as round, homogeneous, low-signal regions with smooth outer margins and a distinct interface with remaining normal renal parenchyma or adjacent cysts. Hemorrhagic cysts were seen as homogeneous medium- to high-signal intensity regions, and about half of them correlated with hyperdense cyst by CT. In five cases, fluid-iron levels were evident by dependent high-intensity layering within the cysts. Renal cell carcinomas occasionally show high intensity because of hemorrhage, but intratumoral fluid-iron levels have not yet been described. These results suggest that MRI is useful in differentiating between simple cysts, hemorrhagic cysts, and neoplasms when CT and sonography are indeterminate.

AB - Nine patients with polycystic kidney disease were examined by MRI, CT and sonography. MRI distinguished among simple cysts, cysts complicated by prior hemorrhage, and coexistent renal cell carcinoma. On T1-weighted spin-echo images, simple renal cysts appeared as round, homogeneous, low-signal regions with smooth outer margins and a distinct interface with remaining normal renal parenchyma or adjacent cysts. Hemorrhagic cysts were seen as homogeneous medium- to high-signal intensity regions, and about half of them correlated with hyperdense cyst by CT. In five cases, fluid-iron levels were evident by dependent high-intensity layering within the cysts. Renal cell carcinomas occasionally show high intensity because of hemorrhage, but intratumoral fluid-iron levels have not yet been described. These results suggest that MRI is useful in differentiating between simple cysts, hemorrhagic cysts, and neoplasms when CT and sonography are indeterminate.

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MRI of hemorrhagic renal cysts in polycystic kidney disease

Abstract

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