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Aim: To document the causal association of iron deficiency anaemia (IDA) and intracranial hypertension (IH). Methods: A consecutive case note review of patients with a clinical diagnosis of idiopathic intracranial hypertension (IIH) and anaemia presenting to a tertiary referral unit over a 2.5-year period. Demographics, aetiology and clinical details were recorded and analysed. Results: Eight cases were identified from 77 new cases presenting with IIH. All 8 had documented microcytic anaemia with clinical evidence of raised intracranial pressure. There was no evidence of venous sinus thrombosis on MRI and MR venography in 7 subjects and on repeated CT venography in 1. On correction of anaemia alone, 7 cases resolved. One patient with severe progressive visual loss underwent ventriculoperitoneal shunt in addition to treatment of anaemia, with good outcome. The incidence of this association is 10.3%. Conclusion: These cases present an association between IDA and IH, in the absence of cerebral sinus thrombosis. As a clinically significant proportion of cases presenting with signs of IIH have IDA, we recommend all patients presenting with IIH have full blood counts and if they are found to be anaemic, they should be treated appropriately.

BackgroundTo determine whether weight loss is significantly associated with a discontinuation of treatment for idiopathic intracranial hypertensionMethodsThe notes of 36 patients with idiopathic intracranial hypertension under regular review for at least 12 months by a single neuro-ophthalmologist were retrospectively reviewed. Weight was recorded at each assessment and weight loss recommended. Treatment was adjusted according to symptoms, visual function including visual fields and optic disc appearance only. Patients were divided according to duration of continuous follow-up, and then sub-divided as to whether they were on or not on treatment at most recent review and whether weight loss had been achieved compared to presentation. Survival analysis was performed to assess the probability of remaining on treatment having lost weight.ResultsConsidering the patients as 3 groups, those with at least 12 months follow-up (n = 36), those with at least 18 months follow-up (n = 24) and those with 24 months or more follow-up (n = 19), only the group with 24 months or more follow-up demonstrated a significant association between weight loss and stopping systemic treatment (Fisher's exact test, p = 0.04). Survival analysis demonstrated that the probability of being on treatment at 5 years having gained weight was 0.63 and having lost weight was 0.38 (log rank test, p = 0.04). The results suggest that final absolute body mass index is more important than the change in body mass index for patients who stop treatment (Mann Whitney U, p = 0.05).ConclusionThis is the first study to demonstrate that weight loss is associated with discontinuation of treatment. Unlike previous studies, our results suggest that final absolute body mass index is more important for stopping treatment than a proportional reduction in weight.

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Combined enucleation and evisceration allows the selection and placement of an appropriately large-sized implant to achieve good volume replacement with no extrusions in our series. This technique is particularly pertinent as an alternative to standard evisceration in phtihisical eyes.

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