F-NaF PET/CT in Presumed Aseptic Pseudarthrosis after Spinal Fusion: Correlation with Findings at Revision Surgery and Intraoperative Cultures.

 Conventional imaging is useful to assess interbody fusion by showing complete trabecular bony bridging, but has a low positive predictive value for pseudarthrosis. Because alterations of bone metabolism may precede structural anatomical changes on computed tomography (CT), we aimed to investigate the ability of fluorine 18 sodium fluoride positron emission tomography/computed tomography ( F-NaF PET/CT) to identify pseudarthrosis after spinal fusion using surgical revision as the reference standard.  We retrospectively reviewed F-NaF PET/CT scans performed between February 2019 and September 2020 in patients experiencing pain after spinal fusion.

Unilateral Extraforaminal Lumbar Interbody Fusion (ELIF): Surgical Technique and Clinical Outcome in 107 Patients.

Study Design: Description of the technique and retrospective study of patients treated with unilateral extraforaminal lumbar interbody fusion (ELIF) for degenerative lumbar spinal disorders.

Objective: To investigate clinical and radiologic outcome of patients treated with unilateral ELIF.

Summary Of Background Data: Lumbar interbody fusion is the classic treatment for higher grades of degenerative disk disease or lumbar segment instability and is performed by posterior (PLIF), posterolateral, or anterior (ALIF) approaches.

[Cerebro-meningeal hemorrhage secondary to ruptured vascular malformation during pregnancy and post-partum].

Thirty two new cases of vascular malformations discovered during pregnancy were reviewed in a multicentric retrospective study and compared to the literature. The authors studied both the influence of pregnancy and post-partum on cerebral vascular malformations and the corresponding neurosurgical and obstetrical management. The relative frequencies of arteriovenous malformations (AVMs) and arterial aneurysms (AAs) is the same for pregnant and non-pregnant women.

[Dermoid cyst of the lateral ventricle associated with ethmoidal dermal sinus. Report of a case].

We report a case of a ventricular dermoid cyst associated with a dermal sinus connected with the ethmoidal cells in a patient who developed rapid symptoms of raised intracranial pressure. Computed tomography showed a cystic mass in the right lateral ventricle with a hydrolipidic image in the left frontal horn of the ventricle and associated hydrocephalus. Magnetic resonance imaging showed a heterogeneous T1 hyperintense mass with a fistulous tract communicating with the ethmoid cells.

[Central neurocytoma. A report of 4 cases].

We report 4 cases of central neurocytoma removed by a transfrontal approach with no recurrence after a mean follow up of 3 years. This uncommon lesion of the supratentorial ventricles (150 cases reported) occurs in young adults, and often induces intracranial hypertension secondary to an obstructive hydrocephalus. The CT scan, MRI and histopathological features are related.

Reactivation of herpes virus after surgery for epilepsy in a pediatric patient with mesial temporal sclerosis: case report.

Objective: This case report is presented to raise the awareness of the potential risk of reactivation of herpes simplex virus (HSV) encephalitis after intracranial surgery.

Clinical Presentation: The case of an 8-year-old male patient who suffered a reactivation of HSV encephalitis after undergoing amygdalohippocampectomy for complex partial seizures is reported. This patient had previously contracted HSV 1 meningoencephalitis at the age of 16 months.

[Intra-orbital dacryops. Report of a case].

We report a case of intra-orbital Dacryops in a 7-year-old child. The presenting sign was progressive exophtalmus. The patient was operated via a lateral approach allowing total removal of the cyst without recurrence after one year.

[Chronic subdural hematoma in utero. Case report with literature review].

We present a case of chronic subdural hematoma diagnosed in utero by ultrasonography, and MRI at 31 weeks gestation. No cause of usual intracranial hemorrhage was found. There was no trauma.

[Trauma-induced arterial aneurysm in childhood. Report of a case and review of the literature].

We report a case of calloso-marginal artery aneurysm in a 3 year old child, revealed 3 weeks after a craniocerebral trauma with frontal embarrure, by a sudden subarachnoidal hemorrhage syndrome with loss of consciousness and coma. The CT scan confirmed the subarachnoid hemorrhage in all the basal cisterns, with an interhemispheric subdural hematoma. The carotid angiography showed a right calloso-marginal aneurysm.

Subdural sarcoma associated with chronic subdural hematoma. Report of two cases and review of the literature.

The authors report the cases of two children who presented in the first months of life with progressive macrocrania related to chronic pericerebral fluid collection. This condition resolved spontaneously without treatment after a few months in the first case, whereas it required several aspirations of blood-stained fluid via the fontanel in the second case. Both patients developed normally without evidence of disease in the earliest years of life and presented at the ages of 3 1/2 and 4 1/2 years, respectively, with symptoms and signs of rapidly progressing intracranial hypertension.

Insidious craniosynostosis and chronic papilledema in childhood.

Purpose: We studied a case of chronic papilledema in a 5-year-old child with visual loss who presented no obvious cosmetic abnormalities.

Methods: Neuroradiologic investigations were suggestive of craniosynostosis. The child underwent decompressive cranial surgery.

[Spinal epidural cavernous angioma. Apropos of 2 cases. Review of the literature].

We report 2 cases of spinal epidural cavernous angiomas revealed by paraplegia, and present the main cases reported in the literature since 1895. The diagnosis of this uncommon affection seems to be difficult to establish only upon clinical and radiological features. In spite of recent advances in neuroradiological imaging, these kinds of angiomas still remain an operative and histopathological discovery.

[Spontaneous spinal epidural hematoma. Apropos of 2 new cases].

The authors report on two cases of spontaneous spinal epidural hematomas. The clinical and radiological (CT, MRI) features as well as the pathogenesis of this rare disease are discussed in comparison with the literature. The authors emphasize the necessity for early diagnosis and treatment as the condition can compromise the functional and even vital prognosis of the patient.

[Papilloma of the choroid plexus. Apropos of 11 cases].

The authors report 11 cases of choroid plexus papillomas in children operated on from 1979 until 1993. The age ranges from 2 months to 14 years old. The most frequent location occurred in the lateral ventricles (7 cases) followed by the locations in the third ventricle (3 cases) and the fourth ventricle (1 case).