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Parent vessel sacrifice carries a risk of perforator injury due to extension of thrombosis from the blind pouch into eloquent perforator vessels. Minimizing this risk requires careful evaluation of anatomy and strategic occlusion, which preserves runoff into relatively large vessels, such as the superior cerebellar artery, the anterior inferior cerebellar artery, or the penetrating branch from the blind pouch, as much as possible.

Parent vessel sacrifice carries a risk of perforator injury due to extension of thrombosis from the blind pouch into eloquent perforator vessels. Minimizing this risk requires careful evaluation of anatomy and strategic occlusion, which preserves runoff into relatively large vessels, such as the superior cerebellar artery, the anterior inferior cerebellar artery, or the penetrating branch from the blind pouch, as much as possible.

The pattern of recurrence of large trigeminal neurinomas is analyzed on the basis of experience with 7 cases.

This is a report of 7 cases of large trigeminal neurinomas that were operated on an average of 11 years earlier. After being relatively asymptomatic over the years, these patients worsened relatively suddenly in their neurologic symptoms and were reoperated.

Imaging showed massive recurrence with tumor having cystic and solid components with sizes ranging from 4.5-11 cm. In 4 cases, the cysts at the time of initial presentation and at the time of recurrence showed a well-defined fluid level within the fluid content of the cyst. During operation it was seen that the tumor contained "hemorrhagic" fluid that was under significant pressure. The solid component in the circumferential periphery of the cyst fluid was soft, necrotic, and vascular. Inaxaplin The entire recurrence in the middle and posterior cranial fossa and in the extracranial compartment was "interdural" or within the dural confines. Radical tumor resection within the dural confines by deploying relatively small surgical exposure resulted in "unusually" rapid recovery in the symptoms. Histological examination of the tumor did not reveal any malignant transformation.

The cases add further insight to the growth pattern and characteristics of large trigeminal neurinomas.

The cases add further insight to the growth pattern and characteristics of large trigeminal neurinomas.

We sought to determine the proportion and number of female neurosurgeons in the workforce at different stages of practice.

The Physician Compare National Downloadable File data set was obtained from the Centers for Medicare & Medicaid Services for physicians who indicated "neurosurgery" as their primary specialty. Physician duplicates, physicians with no listed medical school graduation year, and physicians expected to be in residency (graduation years 2013-2019) were removed, yielding 4956 neurosurgeons. Five-year intervals were used to measure the number of male and female neurosurgeons by different stages of their careers. For example, graduates from years 2008-2012 were expected to be in their first 1-5 years of practice.

There were 405 female (8.2%) and 4551 male (91.8%) neurosurgeons. At 1-5 years of practice, 13.8% (105/760) were women; 6-10 years, 11.5% (94/820) women; 11-15 years, 8.9% (64/720) women; 16-20 years, 8.7% (59/682) women; 21-25 years, 7.4% (46/619) women; 26-30 years, 3.8% (20/520) women; 31-35 years, 3.6% (15/413) women; and 36 years or more, 0.5% women (2/422). The number of female neurosurgeons varied among states, ranging from 0 in Hawaii to 53 in California. The states with the lowest percentage of female neurosurgeons were Hawaii (0%), Oklahoma (3.1%), and Nevada (3.6%). Inaxaplin The states with the highest percentage of female neurosurgeons were New Hampshire (20.0%), Vermont (16.7%), and Rhode Island (15.8%).

The number of practicing female neurosurgeons within the United States is increasing, as shown by the growing percentage of women who are earlier in their surgical careers.

The number of practicing female neurosurgeons within the United States is increasing, as shown by the growing percentage of women who are earlier in their surgical careers.

Osteoid osteomas (OOs) are benign bone forming tumors that, usually, occur in the extremities, with about 10% of them arising in the spine more commonly in the posterior elements. The aim of this study is to evaluate the long-term results of patients suffering from spinal OO treated with surgery and radiofrequency ablation.

This was a retrospective comparison analysis of data prospectively collected from 2 cohorts of consecutive patients diagnosed with OO of the spine treated at the same Institute from November 2002 to February 2019. The first cohort included patients submitted to an intralesional extracapsular excision of the lesion (surgery group); the second cohort included patients submitted to radiofrequency ablation (RFA group).

The surgery group showed a local recurrence rate of 1.7% versus a recurrence rate of 12.5% in the RFA group with a statistically significant difference in the disease-free survival at longest follow-up (P= 0.012). No statistically significant differences were observed in local recurrence rate stratified for level and site of lesion. No complications were observed in both groups at the time of first procedure.

Surgery and RFA are both safe and effective interventional procedures for the management of spinal OO, although RFA is associated with a greater recurrence rate. Treatment should be tailored according to the relationship of lesions with neural structures and to advantages and disadvantages of each technique.

Surgery and RFA are both safe and effective interventional procedures for the management of spinal OO, although RFA is associated with a greater recurrence rate. Treatment should be tailored according to the relationship of lesions with neural structures and to advantages and disadvantages of each technique.

Limited studies exist to support the safety of performing neuromodulation surgeries in patients whose anticlotting medication has been held. Here, we assess the safety of performing deep brain stimulation (DBS) in this patient population.

All consecutive DBS patients who underwent lead and battery placement/revision at our institution between 2011 and 2020 were included in this Institutional Review Board-approved prospective outcomes database. We retrospectively recorded adverse events occurring within 90 days of surgery.

The study included 226 patients who underwent 381 lead placements in 267 surgeries. Of the 267 surgeries included in this study, 176 (66%) were performed on patients not on anticoagulants and 89 (33%) cases were on patients on 1 drug. Two (0.7%) cases involved a patient taking 2 drugs. A total of 49 adverse events were seen. Thirteen occurred in patients taking anticoagulants. There was no difference in adverse event rate between patients on anticlotting medication and those not (χ

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