SynthesisNeurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology2026
Relapse in Tolosa-Hunt syndrome: pooled recurrence rates and associated factors from a meta-analysis of 456 cases.
Synthesis in Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveTolosa-Hunt Syndrome (THS) is a rare, painful ophthalmoplegia caused by granulomatous inflammation within the cavernous sinus. Despite the effective response to corticosteroid therapy, recurrence rates reported in the literature vary significantly, and clear associated factors of recurrence remain elusive. This systematic review and meta-analysis aim to establish the frequency of relapse and identify f actors associated with recurrence. EVIDENCE ACQUISITION: Following PRISMA guidelines, we performed a comprehensive database search of MEDLINE/PubMed, EMBASE, and Scopus from inception to June 2024, focusing on observational studies or case series reporting THS recurrence. Meta-analysis employed a random-effects model to estimate pooled recurrence rates. Meta-regression analyses evaluated clinical and demographic associated factors of recurrence, with publication bias assessed via funnel plots and Egger’s test.
resultsSeventeen studies encompassing 456 patients met the inclusion criteria. The pooled recurrence rate was 23% (95% CI, 17–32%), with substantial heterogeneity (I2 = 59.9%). The frequency of cranial nerve involvement specifically nerves II, IV, and VI, correlated with higher recurrence risk (P < 0.05). Age, sex, duration of follow-up, and MRI abnormalities did not show significant associations. Limited data were available concerning the use of steroid-sparing immunosuppressants, inflammatory biomarkers, and characteristics of MRI.
conclusionApproximately one-quarter of patients with THS experience recurrence. Involvement of cranial nerves II, IV, and VI was associated with relapses. Further prospective investigations with standardized recurrence definitions and structured therapeutic comparisons are needed to clarify prognostic factors and optimize long-term management.
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