Questão jurídica principal
Whether the insured person's health condition improved sufficiently to justify revising the half disability pension down to a quarter pension.
Decisão extraída
The court held that the medical evidence showed a relevant improvement; the insured remained fully unable to work as a mason but could perform lighter adapted work at 70%.
Fundamentação extraída
The cantonal court properly relied on the multidisciplinary MEDAS report. The Federal Court found no obvious error in the assessment of the medical evidence or in the refusal to order further expert reports.