Angiomyolipoma: Imaging findings in lesions with minimal fat

Masahiro Jinzaki, Akihiro Tanimoto, Yoshiaki Narimatsu, Kiyoshi Ohkuma, Tadayoshi Kurata, Hiroshi Shinmoto, Kyoichi Hiramatsu, Makio Mukai, Masaru Murai

Research output: Contribution to journalArticle

101 Citations (Scopus)

Abstract

PURPOSE: To investigate a method of diagnosing angiomyolipoma that contains minimal fat. MATERIALS AND METHODS: In six cases of angiomyolipoma with minimal fat, the attenuation on contrast material-enhanced and unenhanced computed tomographic (CT) images, the echogenicity on sonograms, the signal intensity on T2-weighted magnetic resonance (MR) images, and the gross configuration of the lesion were retrospectively analyzed. In 100 cases of renal cell carcinoma, the same parameters were analyzed, and results were compared with those of angiomyolipoma. RESULTS: When compared with the surrounding renal parenchyma, all six angiomyolipomas showed homogeneously high attenuation on unenhanced CT images, homogeneous enhancement on contrast-enhanced CT images, and homogeneous isoechogenicity on sonograms. Of the five angiomyolipomas examined with MR imaging, four were hypointense and one was isointense on T2-weighted images. All six angiomyolipomas protruded from the renal margin. None of the 100 renal cell carcinomas showed homogeneously high attenuation on unenhanced CT images, homogeneous enhancement on contrast-enhanced CT images, or homogeneous isoechogenicity on sonograms. CONCLUSION: In the kidney, homogeneously high attenuation on unenhanced CT images, homogeneous enhancement on contrast-enhanced CT images, and homogeneous isoechogenicity on sonograms are suggestive of angiomyolipoma that contains abundant muscle and minimal fat.

Original languageEnglish
Pages (from-to)493-496
Number of pages4
JournalRadiology
Volume205
Issue number2
Publication statusPublished - 1997
Externally publishedYes

Fingerprint

Angiomyolipoma
Fats
Image Enhancement
Kidney
Renal Cell Carcinoma
Contrast Media
Magnetic Resonance Spectroscopy
Magnetic Resonance Imaging
Muscles

Keywords

  • Kidney neoplasms, 81.3141, 81.324
  • Kidney neoplasms, CT, 81.12111, 81.12112
  • Kidney neoplasms, MR, 81.121411, 81.121416
  • Kidney neoplasms, US, 81.1298

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology

Cite this

Jinzaki, M., Tanimoto, A., Narimatsu, Y., Ohkuma, K., Kurata, T., Shinmoto, H., ... Murai, M. (1997). Angiomyolipoma: Imaging findings in lesions with minimal fat. Radiology, 205(2), 493-496.

Angiomyolipoma : Imaging findings in lesions with minimal fat. / Jinzaki, Masahiro; Tanimoto, Akihiro; Narimatsu, Yoshiaki; Ohkuma, Kiyoshi; Kurata, Tadayoshi; Shinmoto, Hiroshi; Hiramatsu, Kyoichi; Mukai, Makio; Murai, Masaru.

In: Radiology, Vol. 205, No. 2, 1997, p. 493-496.

Research output: Contribution to journalArticle

Jinzaki, M, Tanimoto, A, Narimatsu, Y, Ohkuma, K, Kurata, T, Shinmoto, H, Hiramatsu, K, Mukai, M & Murai, M 1997, 'Angiomyolipoma: Imaging findings in lesions with minimal fat', Radiology, vol. 205, no. 2, pp. 493-496.
Jinzaki M, Tanimoto A, Narimatsu Y, Ohkuma K, Kurata T, Shinmoto H et al. Angiomyolipoma: Imaging findings in lesions with minimal fat. Radiology. 1997;205(2):493-496.
Jinzaki, Masahiro ; Tanimoto, Akihiro ; Narimatsu, Yoshiaki ; Ohkuma, Kiyoshi ; Kurata, Tadayoshi ; Shinmoto, Hiroshi ; Hiramatsu, Kyoichi ; Mukai, Makio ; Murai, Masaru. / Angiomyolipoma : Imaging findings in lesions with minimal fat. In: Radiology. 1997 ; Vol. 205, No. 2. pp. 493-496.
@article{1a485dcc0b374e908f3349d1ba68e61f,
title = "Angiomyolipoma: Imaging findings in lesions with minimal fat",
abstract = "PURPOSE: To investigate a method of diagnosing angiomyolipoma that contains minimal fat. MATERIALS AND METHODS: In six cases of angiomyolipoma with minimal fat, the attenuation on contrast material-enhanced and unenhanced computed tomographic (CT) images, the echogenicity on sonograms, the signal intensity on T2-weighted magnetic resonance (MR) images, and the gross configuration of the lesion were retrospectively analyzed. In 100 cases of renal cell carcinoma, the same parameters were analyzed, and results were compared with those of angiomyolipoma. RESULTS: When compared with the surrounding renal parenchyma, all six angiomyolipomas showed homogeneously high attenuation on unenhanced CT images, homogeneous enhancement on contrast-enhanced CT images, and homogeneous isoechogenicity on sonograms. Of the five angiomyolipomas examined with MR imaging, four were hypointense and one was isointense on T2-weighted images. All six angiomyolipomas protruded from the renal margin. None of the 100 renal cell carcinomas showed homogeneously high attenuation on unenhanced CT images, homogeneous enhancement on contrast-enhanced CT images, or homogeneous isoechogenicity on sonograms. CONCLUSION: In the kidney, homogeneously high attenuation on unenhanced CT images, homogeneous enhancement on contrast-enhanced CT images, and homogeneous isoechogenicity on sonograms are suggestive of angiomyolipoma that contains abundant muscle and minimal fat.",
keywords = "Kidney neoplasms, 81.3141, 81.324, Kidney neoplasms, CT, 81.12111, 81.12112, Kidney neoplasms, MR, 81.121411, 81.121416, Kidney neoplasms, US, 81.1298",
author = "Masahiro Jinzaki and Akihiro Tanimoto and Yoshiaki Narimatsu and Kiyoshi Ohkuma and Tadayoshi Kurata and Hiroshi Shinmoto and Kyoichi Hiramatsu and Makio Mukai and Masaru Murai",
year = "1997",
language = "English",
volume = "205",
pages = "493--496",
journal = "Radiology",
issn = "0033-8419",
publisher = "Radiological Society of North America Inc.",
number = "2",

}

TY - JOUR

T1 - Angiomyolipoma

T2 - Imaging findings in lesions with minimal fat

AU - Jinzaki, Masahiro

AU - Tanimoto, Akihiro

AU - Narimatsu, Yoshiaki

AU - Ohkuma, Kiyoshi

AU - Kurata, Tadayoshi

AU - Shinmoto, Hiroshi

AU - Hiramatsu, Kyoichi

AU - Mukai, Makio

AU - Murai, Masaru

PY - 1997

Y1 - 1997

N2 - PURPOSE: To investigate a method of diagnosing angiomyolipoma that contains minimal fat. MATERIALS AND METHODS: In six cases of angiomyolipoma with minimal fat, the attenuation on contrast material-enhanced and unenhanced computed tomographic (CT) images, the echogenicity on sonograms, the signal intensity on T2-weighted magnetic resonance (MR) images, and the gross configuration of the lesion were retrospectively analyzed. In 100 cases of renal cell carcinoma, the same parameters were analyzed, and results were compared with those of angiomyolipoma. RESULTS: When compared with the surrounding renal parenchyma, all six angiomyolipomas showed homogeneously high attenuation on unenhanced CT images, homogeneous enhancement on contrast-enhanced CT images, and homogeneous isoechogenicity on sonograms. Of the five angiomyolipomas examined with MR imaging, four were hypointense and one was isointense on T2-weighted images. All six angiomyolipomas protruded from the renal margin. None of the 100 renal cell carcinomas showed homogeneously high attenuation on unenhanced CT images, homogeneous enhancement on contrast-enhanced CT images, or homogeneous isoechogenicity on sonograms. CONCLUSION: In the kidney, homogeneously high attenuation on unenhanced CT images, homogeneous enhancement on contrast-enhanced CT images, and homogeneous isoechogenicity on sonograms are suggestive of angiomyolipoma that contains abundant muscle and minimal fat.

AB - PURPOSE: To investigate a method of diagnosing angiomyolipoma that contains minimal fat. MATERIALS AND METHODS: In six cases of angiomyolipoma with minimal fat, the attenuation on contrast material-enhanced and unenhanced computed tomographic (CT) images, the echogenicity on sonograms, the signal intensity on T2-weighted magnetic resonance (MR) images, and the gross configuration of the lesion were retrospectively analyzed. In 100 cases of renal cell carcinoma, the same parameters were analyzed, and results were compared with those of angiomyolipoma. RESULTS: When compared with the surrounding renal parenchyma, all six angiomyolipomas showed homogeneously high attenuation on unenhanced CT images, homogeneous enhancement on contrast-enhanced CT images, and homogeneous isoechogenicity on sonograms. Of the five angiomyolipomas examined with MR imaging, four were hypointense and one was isointense on T2-weighted images. All six angiomyolipomas protruded from the renal margin. None of the 100 renal cell carcinomas showed homogeneously high attenuation on unenhanced CT images, homogeneous enhancement on contrast-enhanced CT images, or homogeneous isoechogenicity on sonograms. CONCLUSION: In the kidney, homogeneously high attenuation on unenhanced CT images, homogeneous enhancement on contrast-enhanced CT images, and homogeneous isoechogenicity on sonograms are suggestive of angiomyolipoma that contains abundant muscle and minimal fat.

KW - Kidney neoplasms, 81.3141, 81.324

KW - Kidney neoplasms, CT, 81.12111, 81.12112

KW - Kidney neoplasms, MR, 81.121411, 81.121416

KW - Kidney neoplasms, US, 81.1298

UR - http://www.scopus.com/inward/record.url?scp=33748502288&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33748502288&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:33748502288

VL - 205

SP - 493

EP - 496

JO - Radiology

JF - Radiology

SN - 0033-8419

IS - 2

ER -