Surgical Excition of XXXX through a Single-Sided Minimally Invasive Approach: Key-Hole Laminotomy.

@entity1 @entity5 @entity16 @entity1514 @entity51 @entity1653
STUDY DESIGN: Eight @entity1 who underwent surgery through a single-sided keyhole laminotomy due to intradural extramedullary (IDEM) @entity1653 were retrospectively investigated. PURPOSE: To present the surgical outcomes of single-sided keyhole laminotomies aimed to excise large ventral IDEM spinal cord menengiomas. OVERVIEW OF LITERATURE: Less invasive procedures, such as laminotomies and osteoplastic laminotomies, have been previously described in the literature, but an approach that interferes with spinal stability to an even lesser extent would be more desirable. METHODS: Tumors were removed through a slit-like space between the dura and spinal cord without retraction of the spinal cord. The neurological conditions of @entity1 were evaluated pre- and postoperatively with the Nurick grading system. Pathologic subtypes, preoperative symptom duration, @entity5 location on the sagittal and axial planes, and the percentage of @entity5 occupying the intradural space were investigated. On follow-up, magnetic resonance imaging was conducted to evaluate whether the @entity5 had recurred. RESULTS: All @entity5 were localized either ventrally or ventrolaterally. Of the spinal menengiomas, four were cervical and four were @entity1514 . All lesions were completely excised, and the @entity16 improved in six @entity1 . The remaining two @entity1 already had preoperative Nurick grades of 0, and this score was maintained postoperatively. Neither kyphotic changes nor instability developed in any @entity1 during the follow-up period. CONCLUSIONS: Total resection of anterior and anterolateral IDEM menengiomas, without introducing new @entity51 , can be performed by an isolated posterior approach through a single-sided keyhole laminotomy. However, this approach should be applied cautiously and with a thorough understanding of its limitations.
