Primary central nervous system lymphoma.

INTRODUCTION: Primary central nervous system lymphoma is a rare subtype of extranodal non-Hodgkin lymphoma that accounts for 4% of central nervous system tumours. PATIENTS AND METHODS: Retrospective review of 24 patients diagnosed with primary central nervous system lymphoma between 1990 and 2010. All patients were diagnosed using magnetic resonance imaging and the diagnosis was confirmed surgically. RESULTS: Of the 24 patients analysed, all except 4 were immunocompetent. Median age at diagnosis was 59.3 years (range 13-79) and the sex ratio (male to female) was 1:1.1. Cognitive decline (in 33.4%) and headache (in 25%) were the most common complaints. Diagnosis was performed In 13 cases (54%) following craniotomy and in the other 11 cases (46%) after stereotactic biopsy. Breakdown by pathology was as follows: 22 cases of B-cell lymphoma (91.6%), 1 case of anaplastic large-cell lymphoma, and 1 case of T-cell lymphoma. Mean survival time was 12.8 months with an overall 1-year survival rate of 37.5%. CONCLUSIONS: Primary central nervous system lymphoma often presents in the sixth decade with cognitive decline, headache, and focal neurological deficits. A single intracranial lesion was present in 75% of the patients (18 cases), and the remaining 25% (6 cases) had between 2 and 4 lesions. Preoperative clinical status was the most important factor determining prognosis.

[Chronic subgaleal hematoma in a child. Case report]. / Hematoma subgaleal crónico en un lactante. Presentación de un caso.

Neonatal subgaleal hematomas are under-diagnosed collections of blood beneath the galea, often caused by certain obstetric procedures such as use of forceps or vacuum. They generally have low volume and often resolve spontaneously. Occasionally, they can achieve a large volume and may endanger the live of the affected newborns. Rarely, they become chronic and exceptionally they may require surgical treatment. We report the case of a child under one year of age who was referred to our department because of a subgaleal hematoma secondary to vacuum-assisted delivery that required surgical treatment.

[Pituitary apoplexy. A review]. / Apoplejía pituitaria. Revisión del tema.

Pituitary apoplexy constitutes a syndrome that is characterized by the ischemic infarction or hemorrhage into a pituitary tumour. Clinically the patient develops sudden headache, meningismus, visual disturbances, even blindness, and occasionally decrease in level of consciousness. To diagnose it is basic to perform a cerebral MRI. Treatment consists in urgent sellar decompression by transsphenoidal surgery and substitute therapy with steroids.

Pituitary surgery in elderly patients: a safe and effective procedure.

PURPOSE: The incidence of pituitary adenoma (PA) increases with age. Transsphenoidal surgery (TSS) in elderly patients is often considered to have greater risk compared to the younger population. The aim of this study is to compare surgical results, evolution and postoperative complications between elderly and young patients undergoing TSS. METHODS: Retrospective review of patients undergoing TSS between 2011 and 2018 in our institution. Patients were divided into two cohorts: elderly (≥65 years) and non-elderly (<65 years). Characteristics and outcomes of both groups were compared at diagnosis, before surgery and for an average of 5.9 years of postoperative follow-up. RESULTS: One hundred and twenty-five patients were included, 53 patients were ≥65 years (42%). The elderly patients were more likely to have non-functioning PA (NFPA) (90.5% vs. 45.8%, p: <0.01), a higher proportion of macroadenomas (92.4% vs. 77.8%, p = 0.029) and greater extrasellar extension (88.7% vs. 68.1%, p = 0.007). The elderly group also had more compressive symptoms (54.7% vs. 34.7%, p = 0.035) and hypopituitarism (66% vs. 47.2%, p = 0.029). Overall, surgical and endocrinological outcomes between the two groups were similar. Inpatient mortality in the elderly group was 1.8%. Regarding long-term outcomes, elderly patients had more postoperative hypopituitarism (67.9% vs. 45.8%, p = 0.03) with no differences in permanent diabetes insipidus, less residual tumours (24.5% vs. 40.3%, p = 0.019) and a higher rate of remission after surgery (71.7% vs. 52.8%, p = 0.034). When only NFPA cases were compared, the only significant difference was a higher frequency of macroadenomas in the elderly group. CONCLUSIONS: Our results support the safety and efficacy of TSS in elderly patients with PA. Age should not be considered an exclusion criterion for TSS given that successful results can be achieved if an experienced pituitary team is available.

[Intracranial injury caused by captive bolt gun]. / Lesiones intracraneales originadas con pistola de bala cautiva.

Guns bullet or captive bolt is used as a weapon for stunning animals as a prelude to sacrifice. Placed in front of it induce an immediate loss of consciousness, thus achieving a "humanization" of process. It's use for suicide is rare, almost exclusively of people who have access to them because of their occupation, causing severe injuries to the brain. We analyse three cases presented in our service. One of them dies as a result of injuries.

[Filum terminale ependymomas. Analysis of a serie of 20 consecutive cases]. / Ependimomas del filum terminal. Análisis de 20 casos consecutivos.

OBJECTIVE: to analyze the clinical, radiological and surgical outcome of a series of filum terminale ependymomas. Patients and methods. This retrospective study involved 20 patients with 21 ependymomas of the filum terminale encountered during a 21 year period (1988- 2008). All patients were diagnosed using MRI and surgically treated. RESULTS: the male: female ratio was 1:1.5, and the mean age at diagnosis was 44.8 years (range 15-64). First symptom included radicular pain (12 cases) and lumbar pain in the other 8 cases, with average symptom duration of 8.7 years (range 0-6-32). All patients underwent open biopsy, seventeen tumours received gross-total resection and 4 received subtotal resection. Histologically, 20 tumours were myxopapillary ependymomas (grade I) and 1 case a grade II ependymoma. The mean follow-up period was 8 years (range 1-18 years). CONCLUSIONS: filum terminale ependimomas are slow growing tumours of the cauda equina with a high incidence in young adults. The most common presentation is with low back pain long time evolution. Although ependymomas of the filum terminale are thought to be benign, local recurrence is not uncommon.

[Scedosporium apiospermum brain abscess. Report of one case with literature review]. / Absceso cerebral por Scedosporium apiospermum. Presentación de un caso con revisión de la literatura.

Scedosporium apiospermum is a fungus found in the soil and in contaminated water and commonly cause cutaneous infections and is a rare cause of central nervous system infection. Invasive infection is usually associated with immunosuppresion. The authors present a 73-year-old woman with chronic renal disease who presented with headache for 2 weeks. Computerized tomography scans revealed a ring-enhancing lesion in left temporal lobe. An urgent craniotomy was performed and the lesion was totally removed. The patient died 5 days later. Scedosporium apiospermum was isolated in the culture of the extirpated lesion. The authors review the previously reported cases of brain abscess for Scedosporium apiospermum.

[Chronic subdural hematoma associated with arachnoid cyst. Report of 12 cases]. / Hematoma subdural crónico asociado a quiste aracnoideo. Presentación de 12 casos.

INTRODUCTION: We designed this study to investigate the clinical, neurological, and radiological outcome of patients with chronic subdural hematoma related to an intracranial arachnoid cysts. PATIENTS AND METHODS: Medical records of 12 cases of patients with arachnoids cyst complicated with chronic subdural hematoma were retrospectively reviewed. RESULTS: Between January 1984 and April 2008, 12 patients (0.9%) of 1.253 cases of chronic subdural hematoma surgically treated in our hospital had associated arachnoid cyst. Arachnoid cysts were located in the middle fossa (10 cases) and convexity (2 cases). The most frequent symptom was headache (6 cases), followed by seizures (3 cases). Eleven patients underwent burr hole and drainage; the oldest patient was treated conservatively. CONCLUSIONS: Patients with AC, especially when these are located in temporal fossa, appear to harbour a life-long risk of contracting subdural hematoma. Hematoma evacuation is adequate at first operation and if arachnoid cyst is symptomatic or preoperative symptoms persist, additional arachnoid cyst surgery should be considered.

[Epidural haematoma due to an headrest in an adult]. / Hematoma epidural secundario al empleo de cabezal autoestático en un adulto.

A head fixation device with pins is commonly used for immobilization of the patients during neurosurgical procedures. Despite its appropriate management, it may be the cause of some serious complications such as skull perforation and intracranial injuries.We report the case of a 19-years-old young admitted for a endoscopic third ventriculostomy who developed an epidural haematoma due to the penetration of the skull by a pin.

[Spontaneous resolution of an asymptomatic intracranial arachnoid cyst]. / Resolución espontánea de quiste aracnoideo intracraneal asintomático.

Arachnoid cysts are commonly considered to be benign, congenial, extraparenchymatous anomalies. Small cyst are common incidental findings in children and adults. The aetiology and natural history of arachnoid cysts are not fully understood. In most cases, the presence of the cysts is detected on CT-scans or MRI performed for other reasons. In the literature, there have been few documented cases of arachnoid cysts with spontaneous regression. We reports the case of a silvian arachnoid cyst, which disappeared spontaneously during the 13-year-follow-up period. We review the cases previously reported and the mechanisms underlying the resolution of the arachnoid cysts are discussed.

Meningiomas of the lateral ventricles. A review of 10 cases.

BACKGROUND: Intraventricular meningiomas are rare tumours that represent about 2% of all intracranial meningiomas, and represent one of the most challenging problems in neurosurgery. They are located deep within the brain and often are sizable and highly vascular. We report on a series of 10 meningiomas of the lateral ventricles treated at our institution during the last 28 years. PATIENTS: Ten patients (6 women, 4 men; mean age 41.6 yrs) were admitted to our medical center between 1978-2005 with meningioma of the lateral ventricles. Headache was the first symptom in 8 cases and ocular signs were present in 5 patients. RESULTS: Seven tumours were located in the right ventricle (70%) ranging in size from 2-8 cm, with 7 tumours larger than 3 cm in diameter. Nine patients underwent surgery with total excision in 8 cases and subtotal in the other; the remaining patient only received radiosurgery. CONCLUSIONS: Total resection is the gold standard for treatment which was possible in all but one of the cases undergoing surgery.

[Spontaneous resolution of a lumbar disc herniation]. / Resolución espontánea de hernia de disco lumbar.

Lumbar disc herniation is a common cause of lower leg radiculopathy and the most effective methods of treatment remain in question. Both surgical and nonsurgical treatments may provide a successful outcome in appropriately selected patients. The spontaneous resolution of herniated lumbar discs is a well-established phenomenon. The authors present a case of spontaneous regression of a herniated lumbar nucleus pulpous in a patient with radiculopathy.

[Simultaneous bilateral epidural haematomas]. / Hematomas epidurales bilaterales simultáneos.

INTRODUCTION: Epidural haematomas are one of the most common complications of closed head injuries. Bilateral extradural haematomas are rare, usually acute, and generally associated with severe trauma and a high mortality. OBJECTIVE: The purpose of this paper is to present six cases of bilateral extradural haematomas seen at our service during the last 24 years and found an incidence of 2.5% of all cases of extradural haematomas surgically treated. RESULTS: There were 5 males and 1 female with a mean age of 32.6 years (range 16-55). In 3 cases haematoma was across the midline and in the other 3 cases haematomas was found at different locations on either side. Skull fracture was present in all cases. Surgical approach was the primary treatment in all cases. Mortality in our series was 50%. CONCLUSIONS: Bilateral extradural haematomas is a rare condition and the prognosis is mainly dependent of the pre-operative neurological state.

Spontaneous cerebrospinal fluid leaks in the anterior skull base: a surgical challenge.

OBJECTIVE: This retrospective study aimed to evaluate the effective closure rate for spontaneous cerebrospinal fluid leaks with functional endoscopic sinus surgery and identify patient characteristics that may be associated with a need for additional therapy. METHOD: A retrospective analysis of patients with spontaneous cerebrospinal fluid leaks was performed. Data on the nature of presentation, patient body mass index, defect location and size, intracranial pressure, clinical follow up, and complications were collected. RESULTS: Twenty-five patients had spontaneous cerebrospinal fluid leaks with evidence of idiopathic intracranial hypertension. The most common sites were the cribriform plate, followed by the ethmoid roof and sphenoid lateral pterygoid recess. All patients underwent endonasal endoscopic surgery to repair the defect. Post-operatively, all patients underwent lumbar drainage and acetazolamide therapy. CONCLUSION: Spontaneous cerebrospinal fluid leaks represent a surgical challenge because of their high recurrence rates. The most important factor for obtaining a successful repair in these patients is reducing their intracranial pressure through nutritional, medical or surgical means.

[Isolated paralysis of the hypoglossal nerve due to atlanto-occipital joint cysts]. / Paralisis aislada del nervio hipogloso ocasionada por quistes occipitoatloideos.

TITLE: Paralisis aislada del nervio hipogloso ocasionada por quistes occipitoatloideos.

[Intracranial meningiomas: I. Epidemiology, aetiology, pathogenesis and prognostic factors]. / Meningiomas intracraneales: I. Epidemiologia, etiologia, patogenesis y factores pronosticos.

INTRODUCTION: Meningiomas are the most frequent group of intracranial tumours, accounting for around a third of all primary brain tumours. In most cases, they are benign neoplasms that start in the cells of the arachnoid mater and may be located in the intracranial and spinal cavities. AIM: To perform a review of the information available on intracranial meningiomas that allows us to update current know-ledge on the subject. DEVELOPMENT: The review of the literature covers different aspects of intracranial meningiomas, including their epidemiology, histology, risk factors, neurogenetics, diagnostic techniques and prognostic factors. CONCLUSIONS: Intracranial meningiomas are, today, the leading group of intracranial tumours. Although most of them are histologically benign, recurrence rates range between 10% and 20%, even after performing complete resections. Knowledge of risk factors and the genetic disorders that they present will make it easier in the future to introduce customised treatments to fit each case.

[Intracranial gangliogliomas. A review of a series of 20 patients]. / Gangliogliomas intracraneales. Revisión de una serie de 20 pacientes.

INTRODUCTION: A ganglioglioma is a type of primary central nervous system low grade tumour composed of mixed populations of glial and neuroepithelial elements. They accounts for 0.4 to 2% of all intracranial tumours and appear more commonly in children and young adults. Seizures, which are the most important symptom in these tumours, improve significantly after surgical excision. METHODS: Between 1995 and 2008, 20 patients with (12 adults and 8 children) with intracranial ganglioglioma were treated at our hospital. Clinical information obtained by chart review included sex, age at onset of symptoms, clinical history, results of neurological examination, tumour location, CT and MRI appearance, surgical results and follow-up. All patients underwent tumour resection and the extent of surgery was determined from the surgical reports and postoperative imaging studies. RESULTS: The median age of patients was 26.4 years (range, 1-75 years), and the female to male ratio was 1.5:1. Except in one case, all patients had seizures with a median duration before diagnosis of 7.4 years (range 1-29). Seventeen tumours were located in the temporal lobe (9 right and 8 left). Macroscopically complete excision was performed in 17 patients and subtotal in the remaining 3. There were 4 cases of recurrence treated by surgery and radiotherapy being added in one case. The mean follow up was 8.5 years (range 22 months-14 years) and disease free survival at 5 years was 85% and an overall survival of 95%. CONCLUSIONS: The seizures, which are the most frequent symptoms, significantly improved after surgical removal. Surgery is the first choice of therapy in these tumours, and in the presence of subtotal resection or tumour recurrence the best indication for treatment is repeat surgery. Radiotherapy should be reserved only for malignant forms.