Cutaneous necrotising vasculitis induced by levamisoleThe anthelmintic agent levamisole has immunostimulant properties in patients with defective cell-mediated immune responses. We are assessing the drug in patients with breast cancer to see whether it can maintain surgically induced remission. One such patient developed a severe cutaneous necrotising vasculitis, which disappeared once the drug was withdrawn. Case reportA 59-year-old woman had been receiving thrice-weekly levamisole 150 mg/day for three months, when in May 1975 she developed fever and a severe rash. Cutaneous necrotising vasculitis was diagnosed. Biopsy of one of the lesions showed intense neutrophil and eosinophil infiltration of the vessel wall with obliteration of the lumen. There were no other physical abnormalities, and no sign of the original disease was noted. She had not been taking any other drugs.Haemoglobin was 13 g/dl and white cell count 3 0 x 109/1 (3000/mm3; 30 % segmented neutrophils, 8 0o eosinophils, 10 Po monocytes, 52°lymphocytes). Results of complement studies were within normal limits, and other immunological and biochemical values were normal. A bone-marrow aspirate showed a normal distribution of white and red cells but a moderate increase in eosinophils. A chest radiograph was normal.Levamisole was discontinued and the patient given a short course of prednisone 40 mg daily. After two weeks the clinical picture returned to normal, and three months later the skin lesions showed no signs of recurrence and the white cell count was normal. CommentLevamisole-induced vasculitis has not been reported, despite wide use of the drug in various conditions, including malignant and rheumatic diseases.1-3 The pathogenesis of our patient's skin reaction is unknown, though histologically it was similar to an Arthus-type reaction, in which immune-complex formation or complement activation is usually implicated. We found no complement abnormalities in our patient, but the tests did not exclude a local type III reaction.The peripheral blood neutropenia in our patient also implicates levamisole as the causal agent, since neutropenia and agranulocytosis are associated with levamisole treatment.3 The exact mechanism of this reaction is unknown, but the peripheral and central eosinophilia suggest a hypersensitivity reaction. Although we did not challenge the patient (for ethical reasons) we think that levamisole was the likely cause of the vasculitis.

Flow diverters are new generation stents that have recently garnered a large amount of interest for use in treatment of intracranial aneurysms. Flow diverters reduce blood flow into the aneurysm, with redirection along the path of the parent vessel. Flow stagnation into the aneurysm and neck coverage with subsequent endothelialization are the important synergistic mechanisms by which the therapy acts. Several studies have examined the mechanisms by which flow diverters subsequently lead to aneurysm occlusion. This review aims to provide a general overview of the flow diverters and their mechanism of action and potential implications. ANN NEUROL 2019;85:793-800 View this article online at wileyonlinelibrary.com.

No abstract

Bilateral thalamic primary gliomas are an exceedingly rare entity. Symptomology heralding a workup and diagnosis of bithalamic gliomas is diverse and varies between the pediatric and adult populations. Herein, we present a case of a 63-year-old female patient who presented with progressive gait imbalance and fatigue, prompting an outpatient brain MRI, remarkable for marked expansion of the bilateral thalami secondary to non-enhancing, T2-weighted-fluid-attenuated inversion recovery (T2-FLAIR) bright bithalamic lesions. The patient underwent a right frontal frameless stereotactic biopsy of the right thalamic lesion, with immuno-histology indicating a high-grade anaplastic astrocytoma with molecular features of glioblastoma (GBM). The patient’s functional status declined precipitously in the month following her diagnostic biopsy, precluding any therapy, and the patient ultimately pursued home hospice care without further treatment. This case details the clinical management of a very rare tumor, supplementing the available literature on the progression and treatment of this rare disease.

No abstract