Abstract
Case: 60-year-old male with renal cell carcinoma (RCC) presented with progressive weakness in his lower extremities. Work-up revealed metastasis to T5-9, fitting with his clinical picture. Further history revealed chronic daily headaches and therefore head imaging was pursued. CT venogram confirmed the presence of thrombus in the superior sagittal sinus that was contiguous with an occipital calvarial metastasis, consistent with tumor thrombus (Figure 1). In this instance, tumor thrombus indicates that the tumor itself extends from calvarial mass and into the superior sagittal sinus causing blockage. Renal cell carcinoma is known for vascular invasion
1
but does not typically involve the cerebral venous system. Tumor thrombus in other venous systems requires debulking, but treatment of cerebral venous tumor thrombus is unknown.1,2 Sagittal CT venogram showing large burden of tumor thrombus within the middle and posterior portion of the superior sagittal sinus. The thrombus is in contiguity with the occipital calvarial metastasis. Additional thrombi seen within the bilateral transverse and sigmoid sinuses.
Footnotes
Declaration of Conflicting Interests
The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
Funding
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