MR imaging of focal medullary sponge kidney: Case report

Tomoyuki Hida; Akihiro Nishie; Yoshiki Asayama; Kousei Ishigami; Nobuhiro Fujita; Junichi Inokuchi; Seiji Naito; Sadamu Ando; Hiroshi Honda

doi:10.2463/mrms.11.65

MR imaging of focal medullary sponge kidney: Case report

Tomoyuki Hida, Akihiro Nishie, Yoshiki Asayama, Kousei Ishigami, Nobuhiro Fujita, Junichi Inokuchi, Seiji Naito, Sadamu Ando, Hiroshi Honda

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

9 Citations (Scopus)

Abstract

We present a case of focal medullary sponge kidney (MSK) that mimicked a renal tumor. Evaluation of a patient with history of macrohematuria revealed a left renal mass of 3-cm diameter. T ₁-weighted magnetic resonance (MR) images revealed a mass of mixed intensity protruding toward the renal sinus. On fat-saturated T ₂-weighted MR images, the lesion's remarkable hyperintensity suggested the presence of an aggregation of tiny cysts. On diffusion-weighted MR images, the mass also demonstrated high intensity, and its apparent diffusion coefficient was partly decreased (1.12×10 ^-3 mm ²/s). On computed tomography, precontrast images revealed no calcification in the mass. Although slight enhancement was seen in the corticomedullary phase, thick and dense streaks of contrast radiating peripherally were identified in the mass in the excretory phase. Focal MSK was diagnosed. We discuss the potential of MR imaging for diagnosing focal MSK.

Original language	English
Pages (from-to)	65-69
Number of pages	5
Journal	Magnetic Resonance in Medical Sciences
Volume	11
Issue number	1
DOIs	https://doi.org/10.2463/mrms.11.65
Publication status	Published - 2012

All Science Journal Classification (ASJC) codes

Radiology Nuclear Medicine and imaging

Access to Document

10.2463/mrms.11.65

Cite this

@article{4d0ee147d9e44d3dabc8289c84a0ef85,

title = "MR imaging of focal medullary sponge kidney: Case report",

abstract = "We present a case of focal medullary sponge kidney (MSK) that mimicked a renal tumor. Evaluation of a patient with history of macrohematuria revealed a left renal mass of 3-cm diameter. T 1-weighted magnetic resonance (MR) images revealed a mass of mixed intensity protruding toward the renal sinus. On fat-saturated T 2-weighted MR images, the lesion's remarkable hyperintensity suggested the presence of an aggregation of tiny cysts. On diffusion-weighted MR images, the mass also demonstrated high intensity, and its apparent diffusion coefficient was partly decreased (1.12×10 -3 mm 2/s). On computed tomography, precontrast images revealed no calcification in the mass. Although slight enhancement was seen in the corticomedullary phase, thick and dense streaks of contrast radiating peripherally were identified in the mass in the excretory phase. Focal MSK was diagnosed. We discuss the potential of MR imaging for diagnosing focal MSK.",

author = "Tomoyuki Hida and Akihiro Nishie and Yoshiki Asayama and Kousei Ishigami and Nobuhiro Fujita and Junichi Inokuchi and Seiji Naito and Sadamu Ando and Hiroshi Honda",

year = "2012",

doi = "10.2463/mrms.11.65",

language = "English",

volume = "11",

pages = "65--69",

journal = "Magnetic Resonance in Medical Sciences",

issn = "1347-3182",

publisher = "Japan Society of Magnetic Resonance in Medicine",

number = "1",

}

TY - JOUR

T1 - MR imaging of focal medullary sponge kidney

T2 - Case report

AU - Hida, Tomoyuki

AU - Nishie, Akihiro

AU - Asayama, Yoshiki

AU - Ishigami, Kousei

AU - Fujita, Nobuhiro

AU - Inokuchi, Junichi

AU - Naito, Seiji

AU - Ando, Sadamu

AU - Honda, Hiroshi

PY - 2012

Y1 - 2012

N2 - We present a case of focal medullary sponge kidney (MSK) that mimicked a renal tumor. Evaluation of a patient with history of macrohematuria revealed a left renal mass of 3-cm diameter. T 1-weighted magnetic resonance (MR) images revealed a mass of mixed intensity protruding toward the renal sinus. On fat-saturated T 2-weighted MR images, the lesion's remarkable hyperintensity suggested the presence of an aggregation of tiny cysts. On diffusion-weighted MR images, the mass also demonstrated high intensity, and its apparent diffusion coefficient was partly decreased (1.12×10 -3 mm 2/s). On computed tomography, precontrast images revealed no calcification in the mass. Although slight enhancement was seen in the corticomedullary phase, thick and dense streaks of contrast radiating peripherally were identified in the mass in the excretory phase. Focal MSK was diagnosed. We discuss the potential of MR imaging for diagnosing focal MSK.

AB - We present a case of focal medullary sponge kidney (MSK) that mimicked a renal tumor. Evaluation of a patient with history of macrohematuria revealed a left renal mass of 3-cm diameter. T 1-weighted magnetic resonance (MR) images revealed a mass of mixed intensity protruding toward the renal sinus. On fat-saturated T 2-weighted MR images, the lesion's remarkable hyperintensity suggested the presence of an aggregation of tiny cysts. On diffusion-weighted MR images, the mass also demonstrated high intensity, and its apparent diffusion coefficient was partly decreased (1.12×10 -3 mm 2/s). On computed tomography, precontrast images revealed no calcification in the mass. Although slight enhancement was seen in the corticomedullary phase, thick and dense streaks of contrast radiating peripherally were identified in the mass in the excretory phase. Focal MSK was diagnosed. We discuss the potential of MR imaging for diagnosing focal MSK.

UR - http://www.scopus.com/inward/record.url?scp=84863806226&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84863806226&partnerID=8YFLogxK

U2 - 10.2463/mrms.11.65

DO - 10.2463/mrms.11.65

M3 - Article

C2 - 22450389

AN - SCOPUS:84863806226

SN - 1347-3182

VL - 11

SP - 65

EP - 69

JO - Magnetic Resonance in Medical Sciences

JF - Magnetic Resonance in Medical Sciences

IS - 1

ER -

MR imaging of focal medullary sponge kidney: Case report

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this