“Flow-void” sign in osseous metastatic renal cell carcinoma

Murphy, John C.; Patel, A.; James, Steven; Botchu, Rajesh; Davies, A. M.

doi:10.1016/j.crad.2018.08.006

Cited by 9 publications

(6 citation statements)

References 21 publications

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“…In our study, MRI examinations were performed for patients with RPOC, CSP, and GTD. The ow void sign, such as multiple dotlike, tubular structures or multiple serpentine with low signal intensity on both T1WI and T2WI, could be found in patients with uterine AVMs in the myometrium and parametrium, which is consistent with the ndings of several previous studies [20,24,28,29,30,31] . Additionally, in clinical practice, we found that the ow void sign can also be observed in patients without uterine AVMs, and there was no signi cant difference between patients with and without AVMs (P > 0.05).…”

Section: Discussionsupporting

confidence: 91%

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Accuracy of Flow-void Diameters on MR Images in Diagnosing Uterine Arteriovenous Malformations in Patients With Pregnancy-related Diseases

Chen

Zhao

Liu

et al. 2021

Preprint

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Objective(s): To evaluate the “flow void” diameter in patients with pregnancy-related diseases with and without uterine AVMs and assess the diagnostic performance of unenhanced MRI for uterine AVMs.Study Design: From May 2014 to April 2019, 79 patients with pregnancy-related diseases were included, including 36 with and 43 without uterine AVMs confirmed by DSA. On MRI, the diameter of the most prominent “flow void” (hereinafter referred to as fv-D) was measured and compared between patients with and without uterine AVMs. The diagnostic performance of fv-D was estimated with receiver operating characteristic curves.Results: The “flow void” sign was observed in patients with and without uterine AVMs (P>0.05). The fv-D was significantly larger in patients with uterine AVMs in the myometrium and parametrium than in patients without uterine AVMs (P<0.0001). The fv-D achieved a reliable diagnostic performance in the myometrium (sensitivity: 80.56%, specificity: 60.27%, AUC: 0.727, cut-off:>1.33 mm) and parametrium (sensitivity: 97.22%, specificity: 67.44%, AUC: 0.881, cut-off:>2.6 mm). Conclusions: On MRI, fv-D could diagnose uterine AVMs. The fv-D had a much higher diagnostic efficiency in the parametrium than in the myometrium. The parametrium fv-D greatly improved the diagnostic sensitivity and provides a more accurate, noninvasive method of investigating possible uterine AVMs.

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Section: Discussionsupporting

confidence: 91%

“…As previously described [24,28,29,30,31] , the ow-void sign was de ned as multiple dotlike, tubular structures or multiple serpentine with low signal intensity located within the myometrium and parametrium on both T1WI and T2WI in our study.…”

Section: Image Analysismentioning

confidence: 62%

Accuracy of Flow-void Diameters on MR Images in Diagnosing Uterine Arteriovenous Malformations in Patients With Pregnancy-related Diseases

Chen

Zhao

Liu

et al. 2021

Preprint

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“…Brain and bone metastases from RCC have shown intratumoral and marginal flow voids, reflecting its hypervascularity. 5–7 Ovarian metastases also demonstrated the same findings.…”

Section: Discussionsupporting

confidence: 63%

CT and MR imaging findings of bilateral ovarian metastasis from renal cell carcinoma: a case report

Fujii¹,

Mukuda

Murakami

et al. 2021

Acta Radiologica Open

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Secondary ovarian involvement by renal cell carcinoma rarely occurs. Here, we describe the computed tomography and magnetic resonance imaging findings of bilateral ovarian metastases from renal cell carcinoma that demonstrated heterogeneous strong contrast enhancing tumors with flow voids around and within the tumors. In addition, the apparent diffusion coefficients of the malignant tumors were high. These findings were similar to those of renal cell carcinomas at primary and other metastatic sites.

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“…Previous studies reported that a flow void sign was observed in 77%-94% of patients with bone metastases from RCC and was a helpful imaging feature for diagnosing bone metastasis from RCC. 12,13 Although no bone metastases from thyroid cancer with flow void sign have been reported previously, flow void sign can be observed in patients with bone metastasis from thyroid cancer.…”

Section: Discussionmentioning

confidence: 94%

Two cases of flow void sign of temporal bone metastasis from follicular thyroid carcinoma

et al. 2022

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This report describes CT and MRI findings of temporal bone metastasis from follicular thyroid carcinoma in two cases. Both of these had large, osteolytic, hypervascular masses of the temporal bone, accompanied by internal scattered bone fragments and extraosseous mass formation on unenhanced and contrast-enhanced CT images. In the first case, several dilated and tortuous vessels within the markedly hypervascular mass were observed on the arterial phase of dynamic contrast-enhanced CT images. Compared with the signal intensity of the cerebellum, temporal bone masses showed slightly hypo- to slightly hyperintense on T1-weighted images and slightly hypo- to moderately hyperintense on T2-weighted images. Both cases had flow voids in abnormally dilated vessels within the mass on T1- and T2-weighted images. Thyroid follicular carcinoma rarely metastasizes the temporal bone and presents with an osteolytic hypervascular mass with flow void sign.

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“Flow-void” sign in osseous metastatic renal cell carcinoma

Cited by 9 publications

References 21 publications

Accuracy of Flow-void Diameters on MR Images in Diagnosing Uterine Arteriovenous Malformations in Patients With Pregnancy-related Diseases

Accuracy of Flow-void Diameters on MR Images in Diagnosing Uterine Arteriovenous Malformations in Patients With Pregnancy-related Diseases

CT and MR imaging findings of bilateral ovarian metastasis from renal cell carcinoma: a case report

Two cases of flow void sign of temporal bone metastasis from follicular thyroid carcinoma

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