Small solid renal lesions: Usefulness of power Doppler US

Masahiro Jinzaki, Kiyoshi Ohkuma, Akihiro Tanimoto, Makio Mukai, Kyoichi Hiramatsu, Masaru Murai, Jun Ichi Hata

Research output: Contribution to journalArticle

85 Citations (Scopus)

Abstract

PURPOSE: To evaluate whether the vascular pattern at power Doppler ultrasonography (US) improves diagnostic accuracy in small solid renal lesions over that at gray-scale US. MATERIALS AND METHODS: Gray-scale and power Doppler US were performed prospectively in 64 small (1.5-3.0-cm- diameter) solid renal lesions (26 renal cell carcinomas [RCCs], 34 angiomyolipomas, two oncocytomas, two pseudotumors). At gray-scale US, echogenicity and homogeneity of the lesion, an anechoic rim, intratumoral cysts, shadowing, or a central scar were sought. At power Doppler US, the vascular distribution was divided into four patterns. RESULTS: Findings at gray-scale US included an anechoic rim or intratumoral cysts in 20 of 26 RCCs (77%) and the two oncocytomas. Shadowing was seen in seven of 34 angiomyolipomas (21%). Echogenicity, homogeneity, and a central scar were not pathognomonic. At power Doppler US, pattern 3 (peripheral) or 4 (mixed penetrating and peripheral) was seen in all RCCs, seven of 34 angiomyolipomas, and the two oncocytomas. Pattern 1 (intratumoral focal) or 2 (penetrating) was seen in 27 angiomyolipomas. Pattern 1 or 2 was characteristic of angiomyolipomas. The rate of correct diagnosis was significantly increased with combined US (78%) as compared to that with gray- scale (42%) or power Doppler (45%) US alone. CONCLUSION: The vascular distribution at power Doppler US could add important information to gray- scale US findings for differential diagnosis of small solid renal lesions.

Original languageEnglish
Pages (from-to)543-550
Number of pages8
JournalRadiology
Volume209
Issue number2
Publication statusPublished - 1998 Nov

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Doppler Ultrasonography
Angiomyolipoma
Ultrasonography
Oxyphilic Adenoma
Kidney
Renal Cell Carcinoma
Blood Vessels
Cicatrix
Cysts
Differential Diagnosis

Keywords

  • Kidney neoplasms
  • Kidney neoplasms, US
  • Myelolipoma
  • Ultrasound (US), power Doppler studies

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology

Cite this

Jinzaki, M., Ohkuma, K., Tanimoto, A., Mukai, M., Hiramatsu, K., Murai, M., & Hata, J. I. (1998). Small solid renal lesions: Usefulness of power Doppler US. Radiology, 209(2), 543-550.

Small solid renal lesions : Usefulness of power Doppler US. / Jinzaki, Masahiro; Ohkuma, Kiyoshi; Tanimoto, Akihiro; Mukai, Makio; Hiramatsu, Kyoichi; Murai, Masaru; Hata, Jun Ichi.

In: Radiology, Vol. 209, No. 2, 11.1998, p. 543-550.

Research output: Contribution to journalArticle

Jinzaki, M, Ohkuma, K, Tanimoto, A, Mukai, M, Hiramatsu, K, Murai, M & Hata, JI 1998, 'Small solid renal lesions: Usefulness of power Doppler US', Radiology, vol. 209, no. 2, pp. 543-550.
Jinzaki M, Ohkuma K, Tanimoto A, Mukai M, Hiramatsu K, Murai M et al. Small solid renal lesions: Usefulness of power Doppler US. Radiology. 1998 Nov;209(2):543-550.
Jinzaki, Masahiro ; Ohkuma, Kiyoshi ; Tanimoto, Akihiro ; Mukai, Makio ; Hiramatsu, Kyoichi ; Murai, Masaru ; Hata, Jun Ichi. / Small solid renal lesions : Usefulness of power Doppler US. In: Radiology. 1998 ; Vol. 209, No. 2. pp. 543-550.
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abstract = "PURPOSE: To evaluate whether the vascular pattern at power Doppler ultrasonography (US) improves diagnostic accuracy in small solid renal lesions over that at gray-scale US. MATERIALS AND METHODS: Gray-scale and power Doppler US were performed prospectively in 64 small (1.5-3.0-cm- diameter) solid renal lesions (26 renal cell carcinomas [RCCs], 34 angiomyolipomas, two oncocytomas, two pseudotumors). At gray-scale US, echogenicity and homogeneity of the lesion, an anechoic rim, intratumoral cysts, shadowing, or a central scar were sought. At power Doppler US, the vascular distribution was divided into four patterns. RESULTS: Findings at gray-scale US included an anechoic rim or intratumoral cysts in 20 of 26 RCCs (77{\%}) and the two oncocytomas. Shadowing was seen in seven of 34 angiomyolipomas (21{\%}). Echogenicity, homogeneity, and a central scar were not pathognomonic. At power Doppler US, pattern 3 (peripheral) or 4 (mixed penetrating and peripheral) was seen in all RCCs, seven of 34 angiomyolipomas, and the two oncocytomas. Pattern 1 (intratumoral focal) or 2 (penetrating) was seen in 27 angiomyolipomas. Pattern 1 or 2 was characteristic of angiomyolipomas. The rate of correct diagnosis was significantly increased with combined US (78{\%}) as compared to that with gray- scale (42{\%}) or power Doppler (45{\%}) US alone. CONCLUSION: The vascular distribution at power Doppler US could add important information to gray- scale US findings for differential diagnosis of small solid renal lesions.",
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AB - PURPOSE: To evaluate whether the vascular pattern at power Doppler ultrasonography (US) improves diagnostic accuracy in small solid renal lesions over that at gray-scale US. MATERIALS AND METHODS: Gray-scale and power Doppler US were performed prospectively in 64 small (1.5-3.0-cm- diameter) solid renal lesions (26 renal cell carcinomas [RCCs], 34 angiomyolipomas, two oncocytomas, two pseudotumors). At gray-scale US, echogenicity and homogeneity of the lesion, an anechoic rim, intratumoral cysts, shadowing, or a central scar were sought. At power Doppler US, the vascular distribution was divided into four patterns. RESULTS: Findings at gray-scale US included an anechoic rim or intratumoral cysts in 20 of 26 RCCs (77%) and the two oncocytomas. Shadowing was seen in seven of 34 angiomyolipomas (21%). Echogenicity, homogeneity, and a central scar were not pathognomonic. At power Doppler US, pattern 3 (peripheral) or 4 (mixed penetrating and peripheral) was seen in all RCCs, seven of 34 angiomyolipomas, and the two oncocytomas. Pattern 1 (intratumoral focal) or 2 (penetrating) was seen in 27 angiomyolipomas. Pattern 1 or 2 was characteristic of angiomyolipomas. The rate of correct diagnosis was significantly increased with combined US (78%) as compared to that with gray- scale (42%) or power Doppler (45%) US alone. CONCLUSION: The vascular distribution at power Doppler US could add important information to gray- scale US findings for differential diagnosis of small solid renal lesions.

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