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Article ; Online: Erratum. Screening duplex ultrasonography in neurosurgery patients does not correlate with a reduction in pulmonary embolism rate or decreased mortality.

Washington, Chad W

2019 Volume 132, Issue 5, Page(s) 1666

Language	English
Publishing date	2019-10-25
Publishing country	United States
Document type	Journal Article ; Published Erratum
ZDB-ID	3089-2
ISSN	1933-0693 ; 0022-3085
ISSN (online)	1933-0693
ISSN	0022-3085
DOI	10.3171/2019.9.JNS182800a
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Article ; Online: Low-Profile Visualized Intraluminal Support Junior Flow-Diversion Properties Used for Stabilization of a Superior Cerebellar Artery Pseudoaneurysm.

Winter, K Austin / Derrico, Nicholas P / Ziemke, Michael K / Robbins, Austin C / Luzardo, Gustavo / Washington, Chad W / Strickland, Allison

World neurosurgery

2023 Volume 180, Page(s) 6–9

Abstract: Background: Pseudoaneurysms of the posterior circulation pose a unique management challenge. The fragile nature of the pseudoaneurysm wall presents a high risk of rupture and demands treatment. Small vasculature, particularly distal in the posterior ... ...

Abstract	Background: Pseudoaneurysms of the posterior circulation pose a unique management challenge. The fragile nature of the pseudoaneurysm wall presents a high risk of rupture and demands treatment. Small vasculature, particularly distal in the posterior circulation, can preclude management with traditional flow diverters, where the alternative of vessel sacrifice is unacceptable. Small stents can have flow-diversion properties and can be used in these high-risk, difficult-to-access aneurysms. Methods: We describe a 40-year-old woman presenting with a ruptured dissecting right superior cerebellar artery pseudoaneurysm after minor trauma. Given the aneurysm's small size and morphology, it was not amenable to coiling and parent vessel sacrifice was potentially morbid. The pseudoaneurysm was initially stabilized with a Low-Profile Visualized Intraluminal Support Junior (LVIS Jr.) stent due to its reported flow-diverting properties. Results: At six-month follow-up the pseudoaneurysm was stable and the vasospasm had resolved. At this point, definitive treatment with a "FRED Jr." (Flow Re-Direction Endoluminal Device Junior) flow diverter was pursued. Complete obliteration of the pseudoaneurysm was seen at 12 months' follow-up after staged treatment. Conclusions: Due to the unique challenges associated with ruptured pseudoaneurysms located on small-caliber vessels, the options for definitive treatment are limited. The small size of the LVIS Jr. stent and its flow-diverting properties make it a practical treatment option in a difficult situation. This case report provides further support for the flow-diverting properties of the LVIS Jr. and its potential application in the treatment of ruptured pseudoaneurysms in small-caliber intracranial vessels.
MeSH term(s)	Female ; Humans ; Adult ; Aneurysm, False/diagnostic imaging ; Aneurysm, False/surgery ; Intracranial Aneurysm/diagnostic imaging ; Intracranial Aneurysm/surgery ; Endovascular Procedures ; Stents ; Embolization, Therapeutic ; Basilar Artery ; Treatment Outcome ; Retrospective Studies ; Cerebral Angiography
Language	English
Publishing date	2023-08-30
Publishing country	United States
Document type	Case Reports ; Journal Article
ZDB-ID	2534351-8
ISSN	1878-8769 ; 1878-8750
ISSN (online)	1878-8769
ISSN	1878-8750
DOI	10.1016/j.wneu.2023.08.104
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Article ; Online: Development of a Triple-Negative Breast Cancer Leptomeningeal Disease Model in Zebrafish.

Gopal, Udhayakumar / Monroe, Jerry D / Marudamuthu, Amarnath S / Begum, Salma / Walters, Bradley J / Stewart, Rodney A / Washington, Chad W / Gibert, Yann / Zachariah, Marcus A

Cells

2023 Volume 12, Issue 7

Abstract: Leptomeningeal disease occurs when cancer cells migrate into the ventricles of the brain and spinal cord and then colonize the meninges of the central nervous system. The triple-negative subtype of breast cancer often progresses toward leptomeningeal ... ...

Abstract	Leptomeningeal disease occurs when cancer cells migrate into the ventricles of the brain and spinal cord and then colonize the meninges of the central nervous system. The triple-negative subtype of breast cancer often progresses toward leptomeningeal disease and has a poor prognosis because of limited treatment options. This is due, in part, to a lack of animal models with which to study leptomeningeal disease. Here, we developed a translucent zebrafish
MeSH term(s)	Animals ; Humans ; Triple Negative Breast Neoplasms/pathology ; Zebrafish ; Apoptosis ; Antineoplastic Agents/pharmacology ; Doxorubicin/pharmacology ; Doxorubicin/therapeutic use
Chemical Substances	Antineoplastic Agents ; Doxorubicin (80168379AG)
Language	English
Publishing date	2023-03-24
Publishing country	Switzerland
Document type	Journal Article ; Research Support, U.S. Gov't, Non-P.H.S. ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
ZDB-ID	2661518-6
ISSN	2073-4409 ; 2073-4409
ISSN (online)	2073-4409
ISSN	2073-4409
DOI	10.3390/cells12070995
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Article: Case report: Side-firing intraoperative ultrasound guided endoscopic endonasal resection of a clival chordoma.

Baker, Katherine E / Robbins, Austin C / Kumm, Zeynep T / Ziemke, Michael K / Washington, Chad W / Luzardo, Gustavo D / Taylor, Charlotte S / Stringer, Scott P / Zachariah, Marcus A

Frontiers in oncology

2023 Volume 13, Page(s) 1039159

Abstract: Clival chordomas are locally invasive midline skull base tumors arising from remnants of the primitive notochord. Intracranial vasculature and cranial nerve involvement of tumors in the paraclival region necessitates image guidance that provides accurate ...

Abstract	Clival chordomas are locally invasive midline skull base tumors arising from remnants of the primitive notochord. Intracranial vasculature and cranial nerve involvement of tumors in the paraclival region necessitates image guidance that provides accurate real-time feedback during resection. Several intraoperative image guidance modalities have been introduced as adjuncts to endoscopic endonasal surgery, including stereotactic neuronavigation, intraoperative ultrasound, intraoperative MRI, and intraoperative CT. Gross total resection of chordomas is associated with a lower recurrence rate; therefore, intraoperative imaging may improve long-term outcomes by enhancing the extent of resection. However, among these options, effectiveness and accessibility vary between institutions. We previously published the first use of an end-firing probe in the resection of a clival chordoma. End-firing probes provide a single field of view, primarily limited to depth estimation. In this case report, we discuss the benefits of employing a novel minimally invasive side-firing ultrasound probe as a cost-effective and time-efficient option to navigate the anatomy of the paraclival region and guide endoscopic endonasal resection of a large complex clival chordoma.
Language	English
Publishing date	2023-03-01
Publishing country	Switzerland
Document type	Case Reports
ZDB-ID	2649216-7
ISSN	2234-943X
ISSN	2234-943X
DOI	10.3389/fonc.2023.1039159
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Article ; Online: Side-Firing Intraoperative Ultrasonograhy for Resection of Giant Pituitary Adenomas.

Robbins, Austin C / Winter, K Austin / Smalley, Zachary P / Godil, Saniya / Luzardo, Gustavo / Washington, Chad W / Prevedello, Daniel M / Stringer, Scott P / Zachariah, Marcus

World neurosurgery

2023 Volume 173, Page(s) 79–87

Abstract: Background: Suprasellar extension, cavernous sinus invasion, and involvement of intracranial vascular structures and cranial nerves are among the challenges faced by surgeons operating on giant pituitary macroadenomas. Intraoperative tissue shifts may ... ...

Abstract	Background: Suprasellar extension, cavernous sinus invasion, and involvement of intracranial vascular structures and cranial nerves are among the challenges faced by surgeons operating on giant pituitary macroadenomas. Intraoperative tissue shifts may render neuronavigation techniques inaccurate. Intraoperative magnetic resonance imaging can solve this problem, but it may be costly and time consuming. However, intraoperative ultrasonography (IOUS) allows for quick, real-time feedback and may be particularly useful when facing giant invasive adenomas. Here, we present the first study examining technique for IOUS-guided resection specifically focusing on giant pituitary adenomas. Objective: To describe the use of a side-firing ultrasound probe in the resection of giant pituitary macroadenomas. Methods: We describe an operative technique using a side-firing ultrasound probe (Fujifilm/Hitachi) to identify the diaphragma sellae, confirm optic chiasm decompression, identify vascular structures related to tumor invasion, and maximize extent of resection in giant pituitary macroadenomas. Results: Side-firing IOUS allows for identification of the diaphragma sellae to help prevent intraoperative cerebrospinal fluid leak and maximize extent of resection. Side-firing IOUS also aids in confirmation of decompression of the optic chiasm via identification of a patent chiasmatic cistern. Furthermore, direct identification of the cavernous and supraclinoid internal carotid arteries and arterial branches is achieved when resecting tumors with significant parasellar and suprasellar extension. Conclusions: We describe an operative technique in which side-firing IOUS may assist in maximizing extent of resection and protecting vital structures during surgery for giant pituitary adenomas. Use of this technology may be particularly valuable in settings in which intraoperative magnetic resonance imaging is not available.
MeSH term(s)	Humans ; Pituitary Neoplasms/diagnostic imaging ; Pituitary Neoplasms/surgery ; Pituitary Neoplasms/pathology ; Neurosurgical Procedures/methods ; Microsurgery/methods ; Neuronavigation ; Adenoma/diagnostic imaging ; Adenoma/surgery ; Adenoma/pathology ; Magnetic Resonance Imaging/methods ; Treatment Outcome
Language	English
Publishing date	2023-02-14
Publishing country	United States
Document type	Journal Article
ZDB-ID	2534351-8
ISSN	1878-8769 ; 1878-8750
ISSN (online)	1878-8769
ISSN	1878-8750
DOI	10.1016/j.wneu.2023.02.049
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Article: Immuno-Molecular Targeted Therapy Use and Survival Benefit in Patients with Stage IVB Cervical Carcinoma in Commission on Cancer

Sitler, Collin A / Tian, Chunqiao / Hamilton, Chad A / Richardson, Michael T / Chan, John K / Kapp, Daniel S / Leath, Charles A / Casablanca, Yovanni / Washington, Christina / Chappell, Nicole P / Klopp, Ann H / Shriver, Craig D / Tarney, Christopher M / Bateman, Nicholas W / Conrads, Thomas P / Maxwell, George Larry / Phippen, Neil T / Darcy, Kathleen M

Cancers

2024 Volume 16, Issue 5

Abstract: Purpose: To investigate IMT use and survival in real-world stage IVB cervical cancer patients outside randomized clinical trials.: Methods: Patients diagnosed with stage IVB cervical cancer during 2013-2019 in the National Cancer Database and treated ...

Abstract	Purpose: To investigate IMT use and survival in real-world stage IVB cervical cancer patients outside randomized clinical trials. Methods: Patients diagnosed with stage IVB cervical cancer during 2013-2019 in the National Cancer Database and treated with chemotherapy (CT) ± external beam radiation (EBRT) ± intracavitary brachytherapy (ICBT) ± IMT were studied. The adjusted hazard ratio (AHR) and 95% confidence interval (CI) for risk of death were estimated in patients treated with vs. without IMT after applying propensity score analysis to balance the clinical covariates. Results: There were 3164 evaluable patients, including 969 (31%) who were treated with IMT. The use of IMT increased from 11% in 2013 to 46% in 2019. Age, insurance, facility type, sites of distant metastasis, and type of first-line treatment were independently associated with using IMT. In propensity-score-balanced patients, the median survival was 18.6 vs. 13.1 months for with vs. without IMT ( Conclusions: IMT was associated with a consistent survival benefit in real-world patients with stage IVB cervical cancer.
Language	English
Publishing date	2024-03-06
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2527080-1
ISSN	2072-6694
ISSN	2072-6694
DOI	10.3390/cancers16051071
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Article ; Online: Development of a Triple-Negative Breast Cancer Leptomeningeal Disease Model in Zebrafish

Udhayakumar Gopal / Jerry D. Monroe / Amarnath S. Marudamuthu / Salma Begum / Bradley J. Walters / Rodney A. Stewart / Chad W. Washington / Yann Gibert / Marcus A. Zachariah

Cells, Vol 12, Iss 995, p

2023 Volume 995

Abstract	Leptomeningeal disease occurs when cancer cells migrate into the ventricles of the brain and spinal cord and then colonize the meninges of the central nervous system. The triple-negative subtype of breast cancer often progresses toward leptomeningeal disease and has a poor prognosis because of limited treatment options. This is due, in part, to a lack of animal models with which to study leptomeningeal disease. Here, we developed a translucent zebrafish casper ( roy -/-; nacre -/-) xenograft model of leptomeningeal disease in which fluorescent labeled MDA-MB-231 human triple-negative breast cancer cells are microinjected into the ventricles of zebrafish embryos and then tracked and measured using fluorescent microscopy and multimodal plate reader technology. We then used these techniques to measure tumor area, cell proliferation, and cell death in samples treated with the breast cancer drug doxorubicin and a vehicle control. We monitored MDA-MB-231 cell localization and tumor area, and showed that samples treated with doxorubicin exhibited decreased tumor area and proliferation and increased apoptosis compared to control samples.
Keywords	triple-negative breast cancer ; zebrafish ; leptomeningeal disease ; xenograft ; doxorubicin ; Biology (General) ; QH301-705.5
Subject code	610
Language	English
Publishing date	2023-03-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
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Article ; Online: Trends in epistaxis embolization in the United States: a study of the nationwide inpatient sample 2003-2010--caveat emptor.

Washington, Chad W / Derdeyn, Colin P

Journal of vascular and interventional radiology : JVIR

2013 Volume 24, Issue 7, Page(s) 974

MeSH term(s)	Embolization, Therapeutic/trends ; Endovascular Procedures/trends ; Epistaxis/therapy ; Female ; Humans ; Male
Language	English
Publishing date	2013-07
Publishing country	United States
Document type	Comment ; Journal Article
ZDB-ID	1137756-2
ISSN	1535-7732 ; 1051-0443
ISSN (online)	1535-7732
ISSN	1051-0443
DOI	10.1016/j.jvir.2013.04.004
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Article ; Online: Response.

Washington, Chad W / Grubb, Robert L

Journal of neurosurgery

2013 Volume 118, Issue 1, Page(s) 213

MeSH term(s)	Brain Injuries/diagnosis ; Brain Injuries/therapy ; Female ; Humans ; Intensive Care Units/utilization ; Male ; Tomography, X-Ray Computed/utilization
Language	English
Publishing date	2013-01
Publishing country	United States
Document type	Comment ; Letter
ZDB-ID	3089-2
ISSN	1933-0693 ; 0022-3085
ISSN (online)	1933-0693
ISSN	0022-3085
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Article ; Online: The effect of prophylactic antiepileptic medications in aneurysmal subarachnoid hemorrhage patients: A retrospective review.

Smith, Andrew M / Clark, Paul R / Winter, Kenneth A / Smalley, Zachary P / Duke, Sean M / Dedwylder, Michael / Washington, Chad W

Clinical neurology and neurosurgery

2021 Volume 205, Page(s) 106633

Abstract: Objective: The current literary evidence suggests but does not heavily endorse the use of prophylactic antiepileptic drugs (AEDs) after aneurysmal subarachnoid hemorrhage. Literature continues to emerge suggesting not only a lack of efficacy but ... ...

Abstract	Objective: The current literary evidence suggests but does not heavily endorse the use of prophylactic antiepileptic drugs (AEDs) after aneurysmal subarachnoid hemorrhage. Literature continues to emerge suggesting not only a lack of efficacy but associated poor outcomes. This study is a retrospective review comparing seizure incidence in aneurysmal subarachnoid patients between those given prophylactic AEDs and those not. Methods: With IRB approval, a retrospective chart review was performed on all aneurysmal subarachnoid patients from 2012 to 2019 at the University of Mississippi Medical center. Univariate and Multivariate analysis was performed using SAS. Primary outcome was seizure incidence between groups. Factors associated with seizure and poor outcome were also investigated. Results: 348 patients were identified: 120 in the AED group, and 228 patients in the non-AED group. There was no significant difference in mean age, gender, ethnicity, HH scores, treatment modality, or mean aneurysm size. The AED group had a higher history of prior aneurysmal rupture (6.7% vs. 1.3%, p = 0.01) and associated intracranial hemorrhage (22.5% vs. 10.5%, p = 0.0004). There was no significant difference in seizure incidence between the two groups (8.3% vs. 4.8%, p = 0.24). On multivariate analysis, aneurysm clipping compared to coiling (OR 3.8, p = 0.012) and delayed cerebral ischemia (OR 2.77, p = 0.023) were associated with seizures. DCI (OR 8.34), HH grade, Age (OR 1.07), Seizure (8.34), and AED use (1.7) were significantly associated with poor outcome. Conclusion: This retrospective review adds to the evidence that prophylactic AED use in aneurysmal subarachnoid hemorrhage patients has not been proven to improve seizure rates and may result in worse patient outcomes.
Language	English
Publishing date	2021-04-02
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	193107-6
ISSN	1872-6968 ; 0303-8467
ISSN (online)	1872-6968
ISSN	0303-8467
DOI	10.1016/j.clineuro.2021.106633
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