Donut-shaped Craniectomy and En-bloc Removal for Skull Bone Tumors with Dural Adhesion

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  • 硬膜との癒着を伴う頭蓋骨腫瘍に対するドーナツ型開頭による一塊切除法

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Usually, removal of a skull bone tumor is not so difficult, however, for those tumors with dural adhesions, the procedures become complicated because the tumor cannot be resected only by simple bone cutting alone.<br>  We therefore introduce a donut-shaped craniectomy and en-bloc removal for skull bone tumors with dural adhesions. After the initial skin incision, several burr holes are perforated, which are set up on the normal bone so as to encircle the tumor. Subsequently, bone cutting is performed between the adjacent burr holes along the inner and outer line, respectively, in order to expose the donut-shaped dura mater outside of the tumor adhesion. Finally, by cutting the dura mater in a circle between the bone edges, total removal of the lesion can be achieved. Because it is relatively less invasive, this procedure is considered to be a good method for removal of skull bone tumors with dural adhesions regarding handiness, curability, and invasiveness.

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