Endolymphatic sac tumour: exploring the role of CT and MRI features in the diagnosis of 22 cases

Geng, Yue; Gu, Xiaodong; Lin, Mengyan; Chen, W.; Tang, Zhuoyue; Sha, Yan; Song, Yupeng

doi:10.1016/j.crad.2022.04.010

Cited by 3 publications

(3 citation statements)

References 21 publications

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“…The tumor diameter is relatively small (1.0-5.7 cm), 14,15 and the vascular flow void sign was observed in larger lesions (≥1.5 cm). 15 As meningioma and SFT, usually originating from the dura mater, is an important differential diagnosis of intracranial hypervascular tumors with flow void sign. 16 Adjacent hyperostosis is a well-known imaging finding of meningioma, whereas bone destruction caused by SFTs would be attributed to a long-standing pressure effect.…”

Section: Discussionmentioning

confidence: 97%

“…An endolymphatic sac tumor is a locally aggressive neoplasm occurring from the endolymphatic sac of the petrous portion of the temporal bone and is a hypervascular tumor that may erode the adjacent bony and vascular structures. The tumor diameter is relatively small (1.0–5.7 cm), 14,15 and the vascular flow void sign was observed in larger lesions (≥1.5 cm). 15…”

Section: Discussionmentioning

confidence: 98%

“…The tumor diameter is relatively small (1.0–5.7 cm), 14,15 and the vascular flow void sign was observed in larger lesions (≥1.5 cm). 15…”

Section: Discussionmentioning

confidence: 98%

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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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