Radiological findings of primary localized amyloidosis of the ureter

Yuko Tsujioka, Masahiro Jinzaki, Akihiro Tanimoto, Ken Nakagawa, Hirotaka Akita, Eiji Kikuchi, Shigeo Okuda, Shuji Mikami, Mototsugu Oya, Sachio Kuribayashi

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Localized amyloidosis is a rare condition, especially that involving the ureter. Because of its rarity and the difficulty in differentiating this condition from urothelial carcinoma by intravenous urography and computed tomography, nephroureterectomy has often been performed unnecessarily for this disease. The authors encountered two cases of this disease, both of which showed a negative urine cytology, no obvious mass effect, and a hypointensity on T2-weighted imaging. Because these findings are very rare in urothelial carcinoma, ureteroscopy-guided biopsy was performed, which yielded the diagnosis of amyloidosis. The patients were then treated and followed up at our institute. Primary localized amyloidosis of the ureter should be considered when evaluating ureteric lesions visualized as hypointensities on T2-weighted images that do not show an obvious mass effect, which could help in the avoidance of unnecessary surgery.

Original languageEnglish
Pages (from-to)431-435
Number of pages5
JournalJournal of Magnetic Resonance Imaging
Volume35
Issue number2
DOIs
Publication statusPublished - 2012

Fingerprint

Amyloidosis
Ureter
Ureteroscopy
Carcinoma
Unnecessary Procedures
Urography
Cell Biology
Tomography
Urine
Biopsy
Primary amyloidosis

Keywords

  • amyloidosis
  • magnetic resonance imaging
  • T2-weighted images
  • ureter

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

Cite this

Radiological findings of primary localized amyloidosis of the ureter. / Tsujioka, Yuko; Jinzaki, Masahiro; Tanimoto, Akihiro; Nakagawa, Ken; Akita, Hirotaka; Kikuchi, Eiji; Okuda, Shigeo; Mikami, Shuji; Oya, Mototsugu; Kuribayashi, Sachio.

In: Journal of Magnetic Resonance Imaging, Vol. 35, No. 2, 2012, p. 431-435.

Research output: Contribution to journalArticle

@article{7e874b5fdf434b938b185b11a777dba5,
title = "Radiological findings of primary localized amyloidosis of the ureter",
abstract = "Localized amyloidosis is a rare condition, especially that involving the ureter. Because of its rarity and the difficulty in differentiating this condition from urothelial carcinoma by intravenous urography and computed tomography, nephroureterectomy has often been performed unnecessarily for this disease. The authors encountered two cases of this disease, both of which showed a negative urine cytology, no obvious mass effect, and a hypointensity on T2-weighted imaging. Because these findings are very rare in urothelial carcinoma, ureteroscopy-guided biopsy was performed, which yielded the diagnosis of amyloidosis. The patients were then treated and followed up at our institute. Primary localized amyloidosis of the ureter should be considered when evaluating ureteric lesions visualized as hypointensities on T2-weighted images that do not show an obvious mass effect, which could help in the avoidance of unnecessary surgery.",
keywords = "amyloidosis, magnetic resonance imaging, T2-weighted images, ureter",
author = "Yuko Tsujioka and Masahiro Jinzaki and Akihiro Tanimoto and Ken Nakagawa and Hirotaka Akita and Eiji Kikuchi and Shigeo Okuda and Shuji Mikami and Mototsugu Oya and Sachio Kuribayashi",
year = "2012",
doi = "10.1002/jmri.22858",
language = "English",
volume = "35",
pages = "431--435",
journal = "Journal of Magnetic Resonance Imaging",
issn = "1053-1807",
publisher = "John Wiley and Sons Inc.",
number = "2",

}

TY - JOUR

T1 - Radiological findings of primary localized amyloidosis of the ureter

AU - Tsujioka, Yuko

AU - Jinzaki, Masahiro

AU - Tanimoto, Akihiro

AU - Nakagawa, Ken

AU - Akita, Hirotaka

AU - Kikuchi, Eiji

AU - Okuda, Shigeo

AU - Mikami, Shuji

AU - Oya, Mototsugu

AU - Kuribayashi, Sachio

PY - 2012

Y1 - 2012

N2 - Localized amyloidosis is a rare condition, especially that involving the ureter. Because of its rarity and the difficulty in differentiating this condition from urothelial carcinoma by intravenous urography and computed tomography, nephroureterectomy has often been performed unnecessarily for this disease. The authors encountered two cases of this disease, both of which showed a negative urine cytology, no obvious mass effect, and a hypointensity on T2-weighted imaging. Because these findings are very rare in urothelial carcinoma, ureteroscopy-guided biopsy was performed, which yielded the diagnosis of amyloidosis. The patients were then treated and followed up at our institute. Primary localized amyloidosis of the ureter should be considered when evaluating ureteric lesions visualized as hypointensities on T2-weighted images that do not show an obvious mass effect, which could help in the avoidance of unnecessary surgery.

AB - Localized amyloidosis is a rare condition, especially that involving the ureter. Because of its rarity and the difficulty in differentiating this condition from urothelial carcinoma by intravenous urography and computed tomography, nephroureterectomy has often been performed unnecessarily for this disease. The authors encountered two cases of this disease, both of which showed a negative urine cytology, no obvious mass effect, and a hypointensity on T2-weighted imaging. Because these findings are very rare in urothelial carcinoma, ureteroscopy-guided biopsy was performed, which yielded the diagnosis of amyloidosis. The patients were then treated and followed up at our institute. Primary localized amyloidosis of the ureter should be considered when evaluating ureteric lesions visualized as hypointensities on T2-weighted images that do not show an obvious mass effect, which could help in the avoidance of unnecessary surgery.

KW - amyloidosis

KW - magnetic resonance imaging

KW - T2-weighted images

KW - ureter

UR - http://www.scopus.com/inward/record.url?scp=84856284542&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84856284542&partnerID=8YFLogxK

U2 - 10.1002/jmri.22858

DO - 10.1002/jmri.22858

M3 - Article

VL - 35

SP - 431

EP - 435

JO - Journal of Magnetic Resonance Imaging

JF - Journal of Magnetic Resonance Imaging

SN - 1053-1807

IS - 2

ER -