Sunday 22 October 2017

CLIPPERS diagnosis criteria revisited

Autumn mushrooms
The Mayo team have been busy as another interesting paper has appeared which really emphasises the continuing problems of diagnosis in CLIPPERS.

In the paper they perform a detailed comparison of 35 patients who had symptoms suggestive of CLIPPERS. (This blog gets a credit in the text as a patient advocacy site which helped connect some of the subjects with the Mayo). After re-assessment including detailed consideration of imaging and response to steroids, CLIPPERS was confirmed in 23 of the patients. One of the most striking results is that when the differences between the CLIPPERS and non-CLIPPERS groups were analysed, there were no significant differences in terms of symptoms commonly associated with CLIPPERS (e.g. gait ataxia, diplopia, dysarthria etc) or in terms of pre-existing cancers or smoking status. 

There is a lot of detail on the cases here which leads the authors to suggest a distinction between CLIPPERS cases: "probable" CLIPPERS for patients who fit all criteria but didn't have brain tissue biopsy and "definite" CLIPPERS for patients who fit all criteria but also had brain tissue biopsy with supportive findings. Unlike the paper from Dr Taieb's group I talked about in June, there is no focus here on the relapsing nature of the disease.

A revised set of diagnostic criteria is presented which includes some statements on neuropathology (i.e. tissue analysis). Interestingly both the clinical presentation and neuropathological criteria include the requirement "no better explanation" which emphasises that CLIPPERS is still regarded as somewhat of a "last resort" diagnosis.

On a slightly more optimistic note, I am now over 6 years since being discharged from hospital with a bag full of drugs, double vision and problems walking straight. The diagnosis was "probable" CLIPPERS and the outlook was distinctly uncertain. The outlook is still not exactly clear but everything else is pretty good.

Read other articles in this series at Living With CLIPPERS.

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Living With CLIPPERS by Bill Crum is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.