Papireddy Bollam

• MD, MS Che.E.
• Instructor at Louisiana State University Health Sciences Center Shreveport

Congress Abstract  Full Text Background: The endoscopic endonasal approach is gaining popularity for the repair of anterior skull base defects. We review our experience with this procedure, including methods for repair and its overall efficacy.

Congress Abstract  Full Text Background: Multiple methods have been described for managing intraoperative cerebrospinal fluid (CSF) leaks during endoscopic endonasal transsphenoidal surgery. We reviewed our experience with different methods of repair to ascertain risk factors for failed reconstruction.

OBJECTIVE Total tumor excision with the preservation of neurological function and quality of life is the goal of modern-day vestibular schwannoma (VS) surgery. Postoperative facial nerve (FN) paralysis is a devastating complication of VS surgery. Determining the course of the FN in relation to a VS preoperatively is invaluable to the neurosurgeon a...

Introduction: Stereotactic radiosurgery [SRS], particularly Gamma knife radiosurgery [GKRS] is an established treatment option for residual and recurrent pituitary adenoma tumors. It helps in the preservation of surrounding normal neuronal, vascular and hormone producing structures and cause less neurological deficits. The aim of the research is t...

BACKGROUND Internal carotid artery bifurcation aneurysms (ICAbifAs), comprising approximately 5% of intracranial aneurysms, are characterized clinically by their tendency to occur at a younger age and surgically by the technical difficulties posed by their domes being adherent to the frontal lobe, their location at the apex of the sylvian fissure,...

OBJECTIVE Spondylosis with or without spondylolisthesis that does not respond to conservative management has an excellent outcome with direct pars interarticularis repair. Direct repair preserves the segmental spinal motion. A number of operative techniques for direct repair are practiced; however, the procedure of choice is not clearly defined. Th...

Background: To analyze the differences in tumor progression patterns and histopathological characteristics between skull base meningiomas (SBMs) and non-skull base meningiomas (NSBMs). Materials and methods: Retrospective patient data of 382 SBMs and 200 NSBMs, who underwent primary microsurgical resection, between January 1995 and December 2016...

Background: The clinicoradiological outcome of endoscopic fenestration of intracranial cysts and predictors of an unfavorable outcome, including age, are under reported in the neurosurgical literature. In this cohort, our experience in the endoscopic fenestration of intracranial cysts is reviewed. Materials and Methods: Thirty consecutive patients...

Background: Limited or no literature exists identifying factors associated with functional nerve recovery in patients undergoing resection of sixth nerve (CN VI) schwannomas. Methods: A systematic review of literature was performed on CN VI schwannomas that were treated surgically. Synthesizing the findings pooled from the literature, we investi...

Introduction: A patient with a small (<3cm) intracranial meningioma can be either observed or treated. Treatment can be either radiosurgery or microsurgery if and when progression of the tumor occurs. We have compared the local tumor growth control and recurrence-free survival (RFS) of microsurgical resection and radiosurgery in small intracranial...

Introduction: Unruptured intracranial aneurysms (UIA) have become an issue of greater significance as their detection rates have increased over the years. We present the overall experience of microsurgical clipping of unruptured aneurysms by a single surgeon over a period of more than 16 years. Methods: The clinical and radiological data were re...

Object: Ventriculoperitoneal (VP) shunts in infants with posthemorrhagic hydrocephalus (PHH) are prone to failures, with some patients at risk for multiple revisions. The objective of our study is to observe long-term outcomes and identify factors leading to proximal and distal multiple failures. Methods: We performed a retrospective review of i...

Objective Meningioma is a common intracranial tumor that predisposes patients to hydrocephalus which may require a permanent cerebrospinal fluid (CSF) diversion procedure such as ventriculoperitoneal (VP) shunts. We reviewed our long-term experience with VP shunts for the management of hydrocephalus in patients with meningioma. Methods and Material...

Background: The clinical significance of the Simpson grading system of extent of meningioma resection and its role as a predictor for recurrence of World Health Organization (WHO) grade I meningiomas has been questioned in the past, as microsurgery and knowledge of pathological details have advanced. Methods: Clinical and radiological informatio...

OBJECT The difference in course and outcome of several neurodegenerative conditions and traumatic injuries of the nervous system points toward a possible role of genetic and environmental factors as prognostic markers. Apolipoprotein E (Apo-E), a key player in lipid metabolism, is recognized as one of the most powerful genetic risk factors for deme...

Isadore Max Tarlov, an early neurosurgeon, made several important contributions to the field of spine surgery. He described sacral perineural cysts, now known as Tarlov cysts. Dr. Tarlov also introduced the knee-chest patient position to facilitate exposure and homeostasis in lumber surgery. In addition, he developed the use of fibrin glue in nerve...

Objective To elucidate the role of Gamma Knife radiosurgery (GKRS) in the management of nonfunctioning pituitary adenomas (NFAs). Materials and Methods A retrospective review of 57 consecutive patients spanning 2000 to 2013 with NFAs was performed. Of 57 patients, 53 patients had recurrent or residual tumors after microsurgical resection. The study...

Introduction: The association between ABO blood groups and intracranial aneurysms is not well-known. Many co-morbid factors are associated with intracranial aneurysms. Our objective was to assess the prevalence of different blood group in patients with intracranial aneurysm and to look for associations between risk factors and these groups. Mater...

Objective: Primary Glioblastoma Multiforme (GBM) of the spinal cord is a rare entity. The aim of this study was to perform an integrative analysis of patients whose cases were selected from the published studies, and to examine the influence of various factors on overall outcomes. Methods: A PubMed search was performed for literature published f...

The present study investigates outcomes in patients undergoing elective primary, versus revision fusion surgery for lumbar degenerative pathologies using a large population based database. 126,044 patients registered in the National Inpatient Sample (NIS) database were identified to have undergone elective fusion of the lumbar spine (Primary fusion...

Objective Petroclival meningioma (PM) presents with trigeminal neuralgia (TN) in < 5% of cases. Neurosurgeons often face the dilemma of formulating a treatment protocol when TN recurs. In this study, we sought to set up a protocol in patients with PM who had a recurrent TN. Materials and Methods We performed a retrospective review of 57 patients wi...

The proximal segment of the anterior cerebral artery (A1) is amongst the most uncommon locations for occurrence of an intracranial aneurysm. These aneurysms may be missed if small or misinterpreted when they are in the vicinity of Internal Cerebral Artery (ICA) bifurcation or Anterior Communicating Artery (ACOM) region. The association with congeni...

Object: With limited data available on association of risk factors and effect of hospital case volume on outcomes following deep brain stimulation (DBS), the authors attempted to identify these associations using a large population-based database. Methods: The authors performed a retrospective cohort study involving patients who underwent DBS fo...

Felix Platter is one of the pioneer anatomists and physicians of the 16th century who described various human diseases including meningioma. In this historical article, we present the details of Platter's life and his pioneering work on meningioma. In 1614, Dr. Platter described the first case of meningioma. He described the tumor as a round, flesh...

Gamma knife radiosurgery (GKRS) has emerged as a possible treatment option for metastasis brain tumor (MBTs) originated from breast cancer. However, the intermediate or long-term outcome of GKRS on MBTs originated from breast carcinoma is not well defined. The outcome of GKRS on MBTs derived from breast carcinoma was reviewed in our institution's c...

The increasing prevalence and gloomy socio-economic consequence of spine injury remain a concern in modern medicine. In this article, we highlight the infamous gunshot spinal injuries of a few eminent personalities across multiple centuries and their socio-political impact in context with the evolution of modern medicine. The role of available medi...

Background: Beta-adrenergic antagonists have demonstrated beneficial effects in tumor progression and survivability in patients with various cancers by inhibiting norepinephrine-induced tumor cell migration. However, little is known about their effects on the outcomes of metastatic brain tumors (MBTs). This study was undertaken to evaluate the eff...

Gamma knife radiosurgery (GKRS) has emerged as an important therapeutic alternative for different intracranial lesions. We have reviewed our institution's first 1,000 cases of radiosurgeries. We performed a retrospective review (2000-2013) of 1,017 radiosurgeries in 911 patients with various intracranial lesions including vestibular schwannoma (82)...

Introduction: Despite advances in neurocritical care, vasospasm following aneurysmal subarachnoid hemorrhage remains a potentially devastating entity. Several risk factors have been described, which include the amount of subarachnoid hemorrhage, age, smoking, and hypertension. Variations in the anatomy of the anterior circulation can play a role in...

Spinal nerve sheath tumors (SNSTs) are the most common lesions in the extramedullary intradural compartment. Complex and large lesions may pose certain technical difficulties for the operating surgeons. The purpose of this study is to discuss the management of spinal nerve sheath tumors and important technical issues like surgical approaches, spina...

Endovascular neurosurgery, or interventional neuroradiology, has developed rapidly over the last 50 years and has posed a challenge to the established mode of open surgery. Alfred J Luessenhop, an American neurosurgeon, is credited with the first embolization of a cranial arteriovenous malformation and the first intracranial arterial catheterizatio...

Background: Gamma knife radiosurgery (GKRS) has emerged as an important treatment option for metastasis brain tumors (MBTs). However, the long-term outcome of GKRS on MBTs originating from lung carcinoma is not well understood. The treatment of MBTs derived from lung cancer with GKRS at our institution is reviewed. Methods: We performed a retrospec...

Gamma knife radiosurgery (GKRS) has emerged as an important treatment option for metastasis brain tumors (MBTs). However, the long-term outcome of GKRS on MBTs originating from lung carcinoma is not well understood. The treatment of MBTs derived from lung cancer with GKRS at our institution is reviewed.

Background: Gamma knife radiosurgery (GKRS) has emerged as an important treatment option for metastasis brain tumors (MBTs). However, the long-term outcome of GKRS on MBTs originating from lung carcinoma is not well understood. The treatment of MBTs derived from lung cancer with GKRS at our institution is reviewed. Methods: We performed a retrospec...

Although anterior cervical discectomy and fusion (ACDF) is a safe and effective procedure, the complications associated with it cannot be underestimated. The aim of this study was to highlight the potential complications associated with ACDF and the strategies to avoid them. A total of 1576 patients was included in this retrospective study from 199...

Background Aspect ratio (AP), daughter artery ratio (DA), and lateral angle ratio (LA) have been reported in middle cerebral artery bifurcation aneurysms to correlate with rupture status. Objective To study the differences in AP, DA, LA, and aneurysm orientation between ruptured and unruptured basilar bifurcation aneurysms. Methods Three-dimensiona...

Congress Abstract Introduction: Defects of the anterior skull base can arise spontaneously, secondary to trauma or after surgical manipulation. Although the focus has recently leaned toward endoscopic endonasal repairs, there are cases where open repair is still warranted. Frontal sinus fractures often require cranialization of the sinus, and exte...

Objective: To assess the safety of the suprabrow approach (SBCA) for aneurysm surgery by comparing intraoperative rupture rates with those for the standard pterional approach. Methods: A systematic review of all literature published in or after 1997 was performed using specified search words. All articles described aneurysm surgery by one of two...

Objective: Ventriculoperitoneal (VP) shunt surgery is the predominant mode of therapy for patients with hydrocephalus. However, it has potential complications that may require multiple surgical procedures during a patient's lifetime. The objective of this study is to review our long-term experience and evaluate the risk factors for VP shunt failur...

Object: Transforaminal lumbar interbody fusion (TLIF) has been increasingly used to treat degenerative spine disease, including that in patients in whom earlier decompressive procedures have failed. Reexploration in these cases is always challenging and is thought to pose a higher risk of complications. To the best of the authors' knowledge, there...

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 neu...

Objective The superior transvelar approach is used to access pathologies located in the fourth ventricle and brainstem. The surgical path is below the venous structures, through the superior medullary velum. Following splitting the tentorial edge, near the tentorial apex, the superior medullary velum is split in the cerebello-mesencephalic fissure....

Objective: The TransVelumian approach is used to access pathologies located in the fourth ventricle and the brainstem, below the venous structures, through the superior medullary velum. Following splitting the tentorial edge, near the tentorial apex, the superior medullary velum is split in the cerebello-mesencephalic fissure. Using the supracerebe...

Infection remains the most significant complication of ventriculoperitoneal shunt surgery and the reported rates of cerebrospinal fluid shunt infection vary widely across studies in patients with hydrocephalus. The objective of this study is to review and evaluate the infections complicating ventriculoperitoneal shunt surgery in patients with hydro...

Ventriculoperitoneal shunting remains the most widely used neurosurgical procedure for the management of hydrocephalus, albeit with many complications. To review and assess the long-term clinical outcome of ventriculoperitoneal shunt surgery in adult transition patients with pediatric-onset hydrocephalus. Patients 17 years or older who underwent ve...

Ventriculoperitoneal shunting is the most widely used neurosurgical procedure for the management of hydrocephalus. To evaluate our long-term single-institution experience in the management of adult hydrocephalus patients with ventriculoperitoneal shunts. Adult patients who underwent ventriculoperitoneal shunt placement for hydrocephalus from Octobe...

Patients with intracranial tumors are predisposed to persistent hydrocephalus, often requiring a permanent CSF diversion procedure with shunts. This study reviews the long-term experience with ventriculoperitoneal shunts for the management of hydrocephalus in patients with intracranial tumors. Patients with intracranial tumors who underwent ventric...

To study the indication for reoperations after lumbar decompression, the factors predisposing to redo operations, and the effect of prior instrumentation on developing adjacent level stenosis requiring reoperation. Kaplan-Meier analysis was used to compare the median interval to first reoperation. Cox regression was used for multivariate analysis o...

Hydrocephalus is a notorious neurosurgical disease that carries the adage "once a shunt always a shunt." This study was conducted to review the treatment results of pediatric hydrocephalus. Pediatric patients who underwent ventriculoperitoneal shunt surgery over the past 14 years were reviewed for shunt revisions. Variables studied included age at...

The aim of the study was to analyze the outcome of surgical treatment for posthemorrhagic hydrocephalus in premature infants. From 1990 to 2006, 32 premature infants underwent surgical treatment for posthemorrhagic hydrocephalus, and their charts were retrospectively reviewed to analyze the complications and outcome with respect to shunt revisions....

Objective We evaluated the long-term outcome of vestibular schwannoma (VS) treated with gamma knife radiosurgery (GKRS) as a primary treatment as well as an adjunct therapy. Materials and Methods We performed a retrospective review (2000–2012) of 82 patients with VS who received GKRS. Of 82 patients, 20 patients with prior resection received GKRS t...