World Neurosurg
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We retrospectively assessed the surgical outcomes of transitional meningioma (TM) in a relatively large series to evaluate the long-term outcomes and propose an appropriate treatment strategy for TM. ⋯ The results from the present study have shown that GTR should be achieved during the first surgery for TM. Gamma knife radiosurgery might be an effective therapy for patients with tumor recurrence.
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We evaluated the tumor control and cranial nerve (CN) outcomes after adjuvant stereotactic radiosurgery (SRS) for petroclival, cavernous sinus, and cerebellopontine angle meningiomas. ⋯ Adjuvant SRS provides effective tumor control and a low rate of new or worsening CN deficits.
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To evaluate the efficacy and safety of posterior multiple-level asymmetrical Ponte osteotomies for rigid adult idiopathic scoliosis. ⋯ The surgical procedure of multiple-level asymmetrical Ponte osteotomy is a safe and effective technique, with reduced operation time, blood loss, and complications, and may offer an appropriate option to address the problems of rigid adult idiopathic scoliosis.
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Polymorphous low-grade neuroepithelial tumor of the young (PLNTY) is a central nervous system tumor that shares many qualities with oligodendroglioma but is rarely and only very recently described as a distinct entity in the literature. ⋯ Diagnostic investigation of PLNTY shows many similarities with oligodendroglioma, and thus these entities can be mistaken for one another. Certain studies are needed to distinguish PLNTY and other dysembryoplastic neuroepithelial tumors, such as oligodendroglioma.
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Intraspinal dermoid tumors are usually rare benign growths that occur as a result of defects during neural tube formation. They make up less than 1% of tumors in the spine and are associated with spinal dysraphisms or sinus tracts. Although rare, malignant transformation into squamous cell carcinoma has been previously reported. Malignant transformation into adenocarcinoma, however, represents a novel phenotypic differentiation pattern that is hitherto undescribed. ⋯ Dermoid tumors, also known as benign cystic teratoma or mature teratoma, are usually benign congenital tumors comprising epithelial cells that arise from displaced embryonic ectoderm and mesoderm during neural tube formation. Although extremely rare, malignant transformation into squamous cell carcinoma has been reported. This case represents the first report of an intraspinal dermoid tumor transforming into adenocarcinoma. A comprehensive histopathologic analysis is key to identifying the lesion and guiding postsurgical management.