Neuro-Behçet's syndrome in a patient not fulfilling criteria for Behçet's disease: clinical features and value of brain imaging

Neuro-Behçet's disease in childhood: a focus on the neuro-ophthalmological features

Neuro-Behçet's disease (NBD) involves the central nervous system; peripheral nervous system involvement is not often reported. NBD is quite common in adult patients and occurs rarely during childhood and adolescence. Young patients may share symptoms and signs of NBD with other neuro-ophthalmological disorders (e.g. idiopathic intracranial hypertension); thus, making the differential diagnosis difficult. Neuroimaging is mandatory and necessary for a correct NBD diagnosis but in children radiological examinations are often difficult to perform without sedation. From 1971 to 2011, 130 patients aged ≤16 years have been reported with NBD, according to retrospective surveys, case series, and case reports. The origin of the reported cases met the well-known geographical distribution of Behçet's disease (BD); the mean age at presentation of neurological findings was 11.8 years, with male gender prevalence (ratio, 2.9:1). We considered in detail the neuro-ophthalmological features of the 53 cases whose neuroimaging alterations were described with an assigned radiological pattern of the disease (parenchymal: 14 cases, non-parechymal: 35 cases, and mixed: 4 cases). In 19/53 patients (36%), neuro-ophthalmological symptoms anticipated any pathognomonic sign for a BD diagnosis, or only occasional aphtae were recalled by the patients. Family history was positive in 17% of subjects. Headache was reported in 75% of the patients; in those presenting with cerebral vascular involvement, headache was combined to other symptoms of intracranial hypertension. Papilledema was the most frequently reported ophthalmological finding, followed by posterior uveitis. Treatment consisted of systemic steroids in 93% of patients, often combined with other immunosuppressive drugs (especially colchicine and azathioprine). Clinical recovery or improvement was documented in the large majority of patients. Nine subjects had definitive alterations, and one died. Based on our review and personal experience, a delayed diagnosis, and the consequently delayed immunosuppressive treatment, may favour permanent sequelae, in particular, optic atrophy.

Detection of cardiovascular system involvement in Behçet's disease using fluorodeoxyglucose positron emission tomography

OBJECTIVES

Behçet's disease (BD) theoretically affects all sizes and types of vessels; however, there have been few reports describing the clinical efficacy of using (18)F-fluorodeoxyglucose positron emission tomography (FDG-PET) in patients with BD.

METHODS

Eight patients who were registered at the BD Specialty Clinic of Severance Hospital between 2004 and 2008 underwent FDG-PET scans to evaluate the cardiovascular presentations associated with BD. Medical records and FDG-PET images of the patients were retrospectively reviewed to determine the clinical significance of the cardiovascular findings.

RESULTS

The median quantitative FDG uptake index was 1.46 (range, 0.58-2.61). FDG uptake was detected in multiple pseudoaneurysms, aortitis and arteritis associated with aortic regurgitation, and aneurysmatic dilation of the sinus of Valsalva, atherosclerotic change of the proximal ascending aorta associated with aortic regurgitation, and multiple pulmonary artery aneurysms. The quantitative FDG uptake intensity was significantly associated with the ESR level.

CONCLUSIONS

FDG-PET scans may have clinical value as a workup study for patients with BD who have cardiovascular presentations.

La tomographie d'émission de positons en médecine interne : applications actuelles et perspectives d'avenir

PURPOSE

Fluorodeoxyglucose positron emission tomography (FDG-PET) is a promising imaging technique that has already proven effective in modifying patient care in oncology. Fluorodeoxyglucose still remains the main radiopharmaceutical agent routinely used for PET imaging. A growing interest has recently lead to broaden PET research on benign disorders. The field of inflammatory or immune diseases and globally the field of internal medicine could also be impacted by FDG-PET.

MAIN POINTS

Great vessels vasculitides and fever of unknown origin have both been studied by several teams and could become indications for PET. In addition, current indications now extend to paraneoplastic syndromes. It is thus possible to foresee that the clinical applications for PET will continue to expand in these patients.

PERSPECTIVES AND PROJECTS

In the future, inflammatory arthritis, chronic inflammatory bowel diseases, systemic erythematous lupus, histiocytosis, or pulmonary and retroperitoneal fibrosis might benefit from PET even if, available data remains scarce to this day. Although PET will probably alter the landscape of patient management in internal medicine in the near future, additional clinical research is still needed to ascertain the exact role of PET.

Pitfalls in the diagnosis of brain tumours

Establishing the diagnosis of a brain tumour is not always a straightforward process. Many non-neoplastic neurological diseases can mimic brain neoplasms on neuroimaging or on histological examination, including multiple sclerosis, stroke, pyogenic abscess, toxoplasmosis, tuberculosis, cysticercosis, fungal infections, syphilis, sarcoidosis, Behçet disease, radiation necrosis, venous thrombosis, and others. Conversely, several types of brain neoplasms, such as glioblastomas, low-grade gliomas, CNS lymphomas, and brain metastases, can present in the absence of typical tumefactive lesions, posing significant diagnostic challenges. In this Review, we discuss the process of accurately establishing the diagnosis of brain tumours, focusing on pitfalls commonly encountered in clinical practice. We also discuss the rational use and limitations of new diagnostic techniques, such as diffusion-weighted MRI, perfusion-weighted MRI, magnetic resonance spectroscopy, single-photon emission tomography, and positron emission tomography, as well as new tools for histological examination, such as immunohistochemistry and molecular genetics analysis.

Behçet's disease: a case report

While Behçet's disease is an uncommon presentation to a podiatric clinical setting, it is nonetheless a fascinating and poorly understood disease as demonstrated by the current and historical research available about the topic. Much debate remains about the disease cause, course and treatment goals. Only through further research into the specific components of this multisystem disease will medicine be more fully able to address the needs of the patient. This discussion should offer the podiatric physician an overview of the disease as well as available treatment options.