Publications by authors named "Brian K Willis"

Object: Cerebrospinal fluid shunts in patients with posthemorrhagic hydrocephalus are prone to failure, with some patients at risk for multiple failures. The objective of this study was to identify factors leading to multiple failures.

Methods: The authors performed a retrospective analysis of cases of posthemorrhagic hydrocephalus requiring neurosurgical intervention between 1982 and 2010.

View Article and Find Full Text PDF

We analysed retrospectively the effect of missile trajectory on outcomes from civilian gunshot injury to the spine (GSIS) between 1994 and 2008. Most of the 98 patients were male (88.8%).

View Article and Find Full Text PDF

Lhermitte-Duclos disease is a rare cerebellar lesion that poses many diagnostic, pathophysiologic and therapeutic conundrums. Here we present a case that highlights the most important imaging characteristics for diagnosis, the pathophysiology of the disease, and the current management recommendations.

View Article and Find Full Text PDF

Objective: The objective of this study was to assess the role of stereotactic radiosurgery in the management of newly diagnosed multiple intracranial metastases from known primary cancer locations.

Methods: Fifty (29 women and 21 men) patients received radiosurgery for newly diagnosed 3 or more metastatic brain tumors. Their mean age was 53 years.

View Article and Find Full Text PDF

Objective: The early management of posthemorrhagic hydrocephalus in premature infants is challenging and controversial. These infants need a temporary cerebrospinal fluid (CSF) diversion procedure until they gain adequate weight, and the blood and protein levels in CSF are reasonably low before permanent shunt can be placed. Various options are available with their associated advantages and disadvantages.

View Article and Find Full Text PDF

Tethered cord syndrome (TCS) is a rare entity in adults, with only about 100 cases being reported in the literature. It is a syndrome in which patients have neurologic, urologic, and orthopedic signs and symptoms. We present a case of a 40-year-old man with back pain and urinary incontinence who was diagnosed with tethered cord syndrome.

View Article and Find Full Text PDF

Metastatic cancer must be considered as a possibility for intrasellar masses. Newer treatment modalities, such as gamma knife radiosurgery needs to be explored for these lesions. Three cases of intrasellar metastatic lesions were retrospectively reviewed.

View Article and Find Full Text PDF

Background: It is appropriate to investigate and to determine survival trends following glioblastoma multiforme treatment using resective surgery, radiation therapy, and/or chemotherapy in patients aged 59 years and higher.

Methods: We retrospectively reviewed 30 elderly patients (> or =59 years old) who were treated for histopathologically confirmed glioblastoma multiforme at our tertiary care institution from 1990 through 2002. All patients were treated with steroids.

View Article and Find Full Text PDF

Pharmacological therapy for essential tremor (ET), the most common movement disorder, remains largely unsatisfactory. Surgical options such as radiofrequency or thermocoagulation are only suitable for a select group of patients, the young and those free of pre-existing medical conditions. Radiosurgery using the Leksell Gamma Knife has recently gained acceptance as a viable treatment option for tremor control in ET patients.

View Article and Find Full Text PDF

Background: Trigeminal neuralgia (TN) is a painful condition of controversial origin; however, vascular compression of the root entry zone of the trigeminal nerve is thought to be responsible in some cases. Recently, stereotactic radiosurgery has been established as an alternative treatment for medically intractable TN.

Methods: Forty patients with medically refractory TN underwent gamma knife surgery for pain control at our institution.

View Article and Find Full Text PDF

Object: The objective of this retrospective study was to analyze the results of stereotactic radiosurgery performed using a gamma knife in the treatment of 44 consecutive patients with brain metastases from lung carcinoma.

Methods: Forty-four patients with lung carcinoma were treated for metastatic brain tumors by performing radiosurgery with a Leksell Gamma Knife. Twenty-one patients (47.

View Article and Find Full Text PDF

Objective: Secondary prostate cancer affection of the cauda equina (SPCCE) can be an ultimate cause of morbidity and mortality. Since the results of management of this particular disease condition remain largely unknown, a retrospective case review was undertaken to determine the effects of treatment by radiation in SPCCE patients.

Methods: The records of 12 patients with SPCCE treated at the Division of Therapeutic Radiology during the period 1984 to 1998 were reviewed.

View Article and Find Full Text PDF

Objective: To analyze 18 months of results of gamma knife stereotactic radiosurgery in the treatment of brain metastases and determine factors affecting outcome by examining the effectiveness of additional external-beam radiotherapy (XRT).

Materials And Methods: Between January 2000 and September 2001, 61 patients with 103 tumors diagnosed as cerebral metastases were treated with gamma knife. Mean patient age was 57 years (range = 36-81).

View Article and Find Full Text PDF

Background: Traumatic carotid artery injury is an infrequently encountered surgical entity. Carotid artery injuries in polytrauma patients can be easily missed in the absence of clinical findings and/or presence of confounding concurrent injuries.

Methods: Between 1991 and 1998, 23 patients were diagnosed with various carotid artery injuries at the trauma center of Louisiana State University Health Sciences Center, Shreveport, Louisiana.

View Article and Find Full Text PDF

Background: The objective of this study was to assess the role of selective intraoperative angiography and to analyze the factors associated with faulty clip application.

Methods: Two hundred thirty-eight patients undergoing surgery for intracranial aneurysms were studied consecutively for intraoperative angiography (IOA)-related events. The procedure was performed in 155 operations.

View Article and Find Full Text PDF

Louisiana's first ever Leksell Gamma Knife was commissioned at Louisiana State University Health Sciences Center (LSUHSC) in Shreveport in January 2000. Between January 2000 and January 2001,113 patients with various indications were treated using the 201-source Co-60 Leksell model "B" Gamma Knife (Elekta Instruments, Atlanta, Georgia) at LSUHSC-Shreveport. Sixty-three patients were female and 50 were male.

View Article and Find Full Text PDF