Meningeal metastases

Dural metastases refer to neuroblastomas, which are common malignant tumors in children, with a high degree of malignancy and early metastasis, but intracranial metastases are rare, especially those with dural metastases. The case report is as follows. [HS2] Case report  Example 1 Male, 9 years old.  The left eyeball progressively protrudes for 20 days, which has nothing to do with body position, normal vision, no headache and fever. CT shows the outer wall of the left orbit, sphenoid bone, The spindle-shaped soft tissue mass below the skull inner plate of the right temporal fossa and the top of the right temporal crest is uniform in density, with a CT value of 51-55 HU. The inner margin is smooth and thin thread-like dura mater can be seen, and some have shallow lobes. 77 ～ 84 HU, and there is a thickened dura mater on the inner edge. The inner edge of the mass is clear and partially blurred. The mass is about 30 cm? 30 cm? 2 5 cm ～ 1 0 cm? 1 0 cm? 0 7 cm in size, the inner skull has worm-like, osteolytic, and brush-like bone destruction, and there is a small bone defect in the left frontal part, the lateral rectus muscle is compressed and moved inward, and bone puncture is confirmed as neuroblasts Tumors. Nodular dural metastases are a rare type of meningeal metastases. Because they are different from typical meningeal metastases, CT or M RI only appears as a mass connected to the wide basement of the dura mater. It lacks a background of extensive meningeal thickening and enhancement. It is easy to be misdiagnosed as a common tumor outside the brain-meningiomas. The author reports 3 cases of nodular dural metastases confirmed by surgical pathology or follow-up.

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