Question juridique clé
Whether the pension revocation was justified by revision under Art. 53(1) ATSG due to new facts from surveillance and medical assessment.
Solution extraite
The later observation and expert assessment constituted an important new fact; the earlier pension award could be revised and the pension revoked.
Motifs extraits
The earlier medical opinions were made without knowledge of the surveillance material. The new evidence showed deliberate symptom simulation and a simulation-related disorder, which was sufficiently relevant and not merely a different diagnostic appreciation.