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Biomedical subjects

J C Godersky

Publications and source records attributed to J C Godersky.

At least 19 recordsLinked to original sources

Leptomeningeal carcinomatosis following craniofacial resection of an ethmoid tumor.

Leptomeningeal carcinomatosis (LMC) is a rare complication following treatment for head and neck cancer. In this paper, we report a case of LMC following surgery and localized radiation therapy for an ethmoid carcinoma, in which laceration of the dura during craniofacial resection may have provided an access for cancer cells into the cerebrospinal fluid (CSF). As a result, the patient developed LMC manifested as multiple spinal nerve root involvement. The patient died 3 months after the diagnosis of LMC. To avoid this type of complication, special care must be taken to prevent tears in the dura during craniofacial resection. Also, we recommend CSF examination be performed prior to radical surgery if there is any suspicion of meningeal invasion.

Adenocarcinoma↗

Intradural extramedullary cysts of the spinal canal: clinical presentation, radiographic diagnosis, and surgical management.

Fourteen patients with intradural extramedullary cysts of the spinal canal are described. Histological classification included 11 arachnoid, 2 epithelial, and 1 ependymal cyst. There were 9 thoracic, 3 cervical, and 2 lumbar cysts. The most common clinical presentation was a slowly progressive myelopathy. Twelve patients (85%) had objective neurological findings at the time of diagnosis. Radiographic diagnosis was made by a combination of myelography, computed tomographic scan with myelography, and magnetic resonance imaging. Complete surgical resection was accomplished for 8 dorsal cysts, and 6 ventral cysts were widely fenestrated into the subarachnoid space. Overall results were considered excellent or good in 9 patients, fair in 3, and poor in 2. There was one recurrence, which required a second operation. We conclude that the majority of intradural spinal cysts can be successfully managed surgically with a favorable clinical outcome.

Adolescent↗

Cerebral aneurysms associated with neurofibromatosis.

An uncommonly recognized complication of neurofibromatosis (NF) is an angiopathy of the intracranial and extracranial arteries. Most of the previously reported cases have presented as an occlusive process similar to Moyamoya disease. We present our experience over the past 3 years involving three patients with five cerebral aneurysms and associated NF. Four of the aneurysms were intracranial, two being fusiform in nature. Treatment was surgical occlusion and included Selverstone clamping, balloon occlusion, and direct clipping. There appears to be an association between the development of cerebral artery aneurysms and NF, but the pathophysiology of these vascular changes is not fully understood.

Adult↗

Idiopathic and glucocorticoid-induced spinal epidural lipomatosis.

Pathological overgrowth of the epidural fat in the spine has been described and reported nearly exclusively in patients either with Cushing's syndrome or on chronic intake of glucocorticoids for a variety of clinical disorders. The authors report four patients with documented spinal lipomatosis (three pathologically and one radiologically). Only one of these patients received corticosteroids, and none had an underlying endocrinological abnormality. All four patients were adult males with a mean age at onset of symptoms of 43 years (range from 18 to 60 years). The symptoms ranged from simple neurogenic claudication and radicular pain to frank myelopathy. Myelography followed by computerized tomography were instrumental in the diagnosis of the first three patients; the fourth was diagnosed by magnetic resonance imaging. The thoracic spine was involved in two cases and the lumbosacral area in the other two. The different treatment modalities were tailored according to the symptomatology of the patients. These included weight reduction of an overweight patient with minimal neurological findings in one case and decompressive laminectomy and fat debulking to achieve adequate cord decompression in the remaining three cases. Two patients improved significantly, the condition of one stabilized, and the fourth required a second decompression at other spinal levels. The various modalities of treatment and their potential complications are discussed.

Adolescent↗

Brain tumors occurring before 1 year of age: a retrospective reviews of 22 cases in an 11-year period (1977-1987).

Congenital brain tumors have been reported infrequently and their management remains ill defined. An 11-year review (1977-1987) of all children with brain tumors with the onset of symptoms before 1 year of age was completed. Twenty-two children with the following histological diagnoses were treated: astrocytoma (7 patients), primitive neuroectodermal tumor (6 patients), papilloma or carcinoma of the choroid plexus (3 patients), malignant teratoma (2 patients), dermoid tumor (2 patients), embryonal rhabdomyosarcoma (1 patient), and chloroma (1 patient). Fifteen tumors were supratentorial in location, and 7 were infratentorial. Initial symptoms were hydrocephalus (32%), focal neurological deficit (23%), asymptomatic increase in head circumference (18%), failure to thrive (14%), and seizures (4.5%). The goal of treatment was a radical excision when possible, with primary chemotherapy in the last 6 years of the review period. Radiation therapy was the adjunct to surgery in the initial 5-year period. All patients with papillomas of the choroid plexus and dermoid lesions underwent a total resection with no recurrence. All 7 astrocytomas were supratentorial, with 6 occurring in the diencephalon. Five of the seven patients with astrocytomas survived more than 5 years. The 6 primitive neuroectodermal tumors were located equally between the supra- and infratentorial spaces. Four of the 6 infants with these tumors received chemotherapy (2 received chemotherapy alone; 2 received chemotherapy and radiation therapy) and are tumor free 2 to 9 years later. A fifth child received radiation therapy alone early in the series and survived only 4 months. The family of the other child refused adjunctive treatment.(ABSTRACT TRUNCATED AT 250 WORDS)

Astrocytoma↗

Magnetic resonance imaging and neurobehavioural outcome in traumatic brain injury.

Magnetic resonance (MR) imaging is a sensitive means of detecting haemorrhagic and nonhaemorrhagic forms of brain injury. This study correlates the neurobehavioural (NB) deficits in 49 adult patients with lesions detected by MR imaging. MR imaging was performed 2-19 days following trauma, analyzed for the injury type and graded for severity. A battery of NB tests was performed prior to hospital discharge or at the time of initial follow-up visit (31 patients). 15 patients were so severely impaired that testing could not be done and 3 died prior to discharge. The NB test scores were grouped into 3 levels of impairment. The overall NB scores were compared with MR lesion severity ratings and a positive correlation found (r = 0.47). In addition, lesion severity, type and location resulted in specific NB deficits. We conclude that the lesion location and severity can be accurately identified by acute phase MR are associated with specific types of neurobehavioural deficits in a high percentage of testable patients.

Adolescent↗

Surgical experience with cerebral amyloid angiopathy.

Cerebral amyloid angiopathy can present as lobar intracerebral hemorrhage in an elderly person, presumably due to increased fragility of the vessels affected by amyloid deposition. For this reason, patients presenting with intracerebral hemorrhage and suspected of having cerebral amyloid angiopathy have often been treated nonsurgically. Since 1983 we have evaluated 11 patients with cerebral amyloid angiopathy (nine women and two men, mean age 73 years) who have undergone either intracerebral hematoma evacuation or brain biopsy. Nine of the 11 patients presented with intracerebral hemorrhage, which was unilobar in three patients and multilobar in six and involved the parietal lobes seven times, the frontal lobes four times, the temporal lobes four times, and the occipital lobes twice. These nine patients underwent hematoma removal, with no cases of abnormal intraoperative bleeding or recurrent hemorrhage. Six patients improved neurologically, and two were unchanged after hematoma evacuation; the remaining patient had a fatal cardiopulmonary arrest during the immediate postoperative period. During follow-up in seven patients (median 11 months, range 1 week to 74 months) none experienced a recurrent intracerebral hemorrhage and four continued to improve. Two of the 11 patients had cerebral amyloid angiopathy diagnosed by brain biopsy as part of an evaluation for dementia, also without surgical complications. This series suggests that patients with cerebral amyloid angiopathy may safely undergo operative procedures, and patients presenting with intracerebral hemorrhage may show neurologic improvement following evacuation of the hematoma.

Aged↗

Management of cervical spine injuries in patients with ankylosing spondylitis.

Eleven patients with ankylosing spondylitis and traumatic fracture/dislocation of the spine were identified in a retrospective review of all cases of cervical spine injury treated on the neurosurgical service over a 10-year period. Injury was most often secondary to minor trauma or a motor-vehicle accident, and the level of vertebral involvement was most frequently between C-5 and T-1. Neurological symptoms at presentation ranged from neck pain alone to complete loss of function distal to the level of injury. Initial routine treatment consisted of axial traction for realignment with the minimal weight needed to accomplish this, taking into account the flexion deformity. All patients underwent pluridirectional tomography and/or computerized tomography to delineate the exact sites of injury. Three patients died shortly after admission due to pulmonary complications. The remaining eight patients underwent early posterior stabilization and mobilization in a halo or cervicothoracic brace to achieve fusion. Neurological improvement was achieved in six of these eight cases. The experience described here supports the initiation of axial traction as initial therapy for cervical injuries followed by early surgical stabilization in patients with ankylosing spondylitis. The difficulty of maintaining spinal alignment and the devastating pulmonary problems attendant on conservative management may be obviated by early fusion.

Adult↗

Leukoencephalopathy in cerebral amyloid angiopathy: MR imaging in four cases.

We report four cases of biopsy proved cerebral amyloid angiopathy demonstrated by MR imaging. White matter signal hyperintensities on T2-weighted spin-echo pulse sequences were present in three patients. We believe the white matter lesions associated with cerebral amyloid angiopathy are not specific to this disorder but rather reflect hypoperfusion of distal white matter resulting from vascular disease.

Aged↗

Nicardipine HCl: clinical experience in patients undergoing anaesthesia for intracranial aneurysm clipping.

Previous studies have reported haemodynamic interactions between dihydropyridine calcium antagonists and general anaesthesia. During anaesthesia for intracranial aneurysm surgery, we prospectively compared haemodynamic values obtained from 13 patients being treated with nicardipine HCl (0.15 mg.kg-1.hr-1 IV) for cerebral vasospasm against values obtained from 11 untreated controls. Prior to induction of anaesthesia, nicardipine-treated patients had significantly elevated mean +/- SD cardiac index (5.67 +/- 1.30 vs 3.99 +/- 0.73 L.min-1.m-2) while MAP (86 +/- 10 vs 99 +/- 14 mmHg) and systemic vascular resistance (647 +/- 227 vs 1141 +/- 404 dynes.sec-1.cm-5) were reduced. Heart rate, CVP, and PACWP were similar between groups. Anaesthesia induction and tracheal intubation resulted in similar haemodynamic values between groups with the exception of CVP (10 +/- 5 vs 5 +/- 2 mmHg) and PACWP (15 +/- 5 vs 8 +/- 3 mmHg) which were elevated in the nicardipine group (P less than 0.01). Mannitol infusion and deliberate hypotension resulted in nearly identical haemodynamic responses in both groups. Nicardipine-treated patients required more intravenous fluids during the operative procedure (2.4 +/- 0.3 L vs 1.5 +/- 0.4 L, P less than 0.05) and were less likely to require isoflurane supplementation to morphine sulphate/nitrous oxide anaesthesia (P less than 0.01). In summary, our experience with nicardipine HCl revealed no major untoward effects with respect to maintenance of intraoperative haemodynamic stability despite continuous antivasospasm therapy with this vasodilator.

Adult↗

Traumatic brain stem injury: MR imaging.

Eighty-seven patients with acute (n = 70) or chronic (n = 17) head injuries were prospectively studied with magnetic resonance (MR) imaging and computed tomography (CT) to characterize the frequency and nature of traumatic brain stem injury (BSI). Forty-eight traumatic lesions were identified in 36 patients. Of 36 patients, 35 had neurologic findings that corroborated the radiographic impression of BSI. T1- and T2-weighted MR images demonstrated a significantly higher number of lesions than did CT. Patients with BSI had a significantly higher frequency of corpus callosum and diffuse axonal "shear" lesions. The number of cortical contusions and extraaxial hematomas was similar in both groups. The mean Glasgow Coma Scale (GCS) scores at admission were significantly lower in patients with evidence of BSI on MR images. Patients with primary BSI had lower initial GCS scores, a longer duration of coma, more diffuse axonal "shear" lesions, and a higher frequency of corpus callosum injury than patients with secondary BSI. The location of primary and secondary lesions was significantly different. Overall, MR imaging was more helpful than CT in detecting, localizing, and characterizing BSI.

Acute Disease↗

A randomized trial of aspirin or heparin in hospitalized patients with recent transient ischemic attacks. A pilot study.

In a randomized pilot study we compared the efficacy of temporary anticoagulation with intravenous heparin sodium to the efficacy of aspirin in preventing cerebral infarction in hospitalized patients with recent (less than 7 days) transient ischemic attacks (TIAs). Fifty-five patients (33 men, 22 women) aged 36-81 (mean 62.7) years met entry criteria and agreed to participate. Symptoms prompting hospitalization were referable to the carotid distribution in 43 patients (34 hemispheric, nine retinal); 12 patients had vertebrobasilar distribution TIAs. Twenty-seven patients received heparin and 28 received aspirin. Patients were treated until surgery or until long-term medical therapy was instituted, 3-9 (mean 5.5) days in the heparin group and 3-15 (mean 5.8) days in the aspirin group. Recurrent TIAs occurred in eight patients given heparin and in seven treated with aspirin. Infarction occurred in one patient in the heparin group and in four patients in the aspirin group (three brain, one retinal infarction). Initial symptoms in these five patients were referable to the carotid distribution in two and to the vertebrobasilar distribution in three. All patients but the one with a retinal infarction had recurrent TIAs prior to stroke. Our pilot study suggests that hospitalized patients with recent TIAs are at high risk for recurrent TIAs (15 of 55, 27%) and brain infarction (five of 55, 9%) and that patients with recent vertebrobasilar distribution TIAs have a marginally significantly higher risk (odds ratio 6.83, 95% confidence interval 0.65-88.66) of infarction than patients with recent carotid distribution TIAs.

Adolescent↗

Symptomatic congenital hydrocephalus in the elderly simulating normal pressure hydrocephalus.

In a series of 30 older patients shunted for symptomatic hydrocephalus, we found 3 with a head circumference at or greater than the 98th percentile. In 2, we demonstrated deterioration over 6 and 12 months by serial videotaping of gait and neuropsychological testing. In the 3rd, serial lumbar punctures over a 6-month period gave temporary improvement. In each, CTs showed ventriculomegaly without transependymal flow. One patient had an Arnold-Chiari type I abnormality identified by MRI. All had systemic hypertension. CSF pressure monitoring showed CSF pressure greater than 15 mm Hg 39% of the time in 1 patient, and 100% in another. All improved with ventriculoperitoneal shunting. Patients with probable compensated congenital hydrocephalus who functioned well throughout most of their lives may become symptomatic as they age but improve with shunt surgery. The head circumference should be measured in all older hydrocephalic patients.

Aged↗

Variables predicting surgical outcome in symptomatic hydrocephalus in the elderly.

We prospectively studied 30 older patients who had shunt surgery for symptomatic hydrocephalus and measured outcome using serial videotaping of gait, neuropsychological testing, and the Katz index of activities of daily living. Twenty-three patients improved and 7 did not. Using univariate analysis and the Fisher exact test, we found that the following variables were significantly related to outcome: (1) time B-waves present on 24-hour CSF pressure record; (2) anterior/posterior ratio on slice 4 of regional cerebral blood flow study; (3) duration of dementia prior to surgery; and (4) gait abnormality preceding dementia. The following variables showed a trend towards significance: (1) time CSF pressure greater than 15 mm Hg; and (2) scoring either pass or fail on the Multilingual Visual Naming Test. We conclude that several variables are significantly associated with surgical outcome in symptomatic hydrocephalus in the elderly and can be used in deciding whether to recommend surgery.

Aged↗

Failure of pre-ischemic lidocaine administration to ameliorate global ischemic brain damage in the rat.

The cerebral protective effects of lidocaine were evaluated using a rat model of severe (near-complete) global ischemia produced by 10 min of bilateral carotid artery occlusion combined with systemic hypotension (MAP 45-55 mmHg). Prior to the induction of ischemia, 16 rats were given incremental doses of lidocaine intravenously until EEG slowing with sharp wave activity became evident. An equal number of rats (controls) received saline prior to the ischemic insult. Normoxia, normocapnia, and normothermia were maintained at all times. Following ischemia, the animals were allowed to recover. At 1.5 h post-ischemia, eight rats from each treatment group were reanesthetized, and regional brain water content was assessed gravimetrically. Brain specific gravity was significantly reduced from normal values in both treatment groups, and was unaltered by pre-ischemic lidocaine administration. Seven days post-ischemia, the remaining animals were reanesthetized; the brains were formalin fixed and processed for identification of irreversibly injured neurons in the hippocampus, neocortex, and caudate nucleus. Saline-treated rats displayed 75 +/- 4% (mean +/- SD) dead cells in the hippocampus (CA1); lidocaine-treated rats had similar injury (78 +/- 7%). In the neocortex and caudate nucleus, injury was graded as moderate, and no difference in severity could be distinguished between the treatment groups. The authors conclude that pre-ischemic treatment with maximal sub-epileptogenic doses of lidocaine had no effect on either early post-ischemic cerebral edema or delayed neuronal necrosis in this rat model of near-complete global ischemia.

Animals↗

Combination of aminocaproic acid and nicardipine in treatment of aneurysmal subarachnoid hemorrhage.

Antifibrinolytic drugs reduce the risk of rebleeding during the first 2 weeks after aneurysmal subarachnoid hemorrhage. However, they do not lower overall mortality, largely because of an increased incidence of cerebral ischemia. The usefulness of antifibrinolytic drugs might be increased if a method to prevent or control vasospasm in patients were to be developed. We recently completed late Phase I and Phase II studies of the calcium ion blocking drug nicardipine in 67 patients treated within 1 week of subarachnoid hemorrhage. Of these 67 patients, 42 had delayed operations and were treated concomitantly with the antifibrinolytic drug aminocaproic acid (1.5 g/hr) for an average of 6 days before surgery. The outcome of these 42 patients is the subject of this report. Fifteen of 42 patients were treated with the lower dosage levels of nicardipine (0.4-4.5 mg/m2/hr), and 27 patients were treated at the highest dosage level (6.0 mg/m2/hr). Using the World Federation of Neurological Surgeons scale for subarachnoid hemorrhage, at admission 18 patients were Grade I, 15 were Grade II, 6 were Grade III, and 3 were Grade IV. Five patients (12%) developed clinical signs of deterioration suggestive of cerebral ischemia with concomitant evidence of vasospasm on arteriography. These patients were all treated with hypervolemic hypertensive therapy. Only one patient (2%) developed an infarction from vasospasm. Two patients developed symptomatic hydrocephalus requiring ventriculoperitoneal shunting, and a third patient required a temporary ventriculostomy. The 3-month postoperative outcomes were excellent. Three patients (7%) rebled. Three patients died, two from rebleeding of the aneurysm and one who never regained consciousness from the initial hemorrhage.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗