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Announcements from the collaborative: new consensus projects, registry milestones, education releases and calls for participation.

12 August 2026Consensus

Delphi panel opens on imaging criteria for venous TOS

Fifty-two panellists from nineteen countries will rate 34 statements on positional imaging, duplex protocols and reporting thresholds across three anonymous rounds. The first round closes at the end of September, with aggregated results shared with the panel before round two.

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29 July 2026Registry

Registry passes 1,200 de-identified cases

Thirty-eight participating centers have now contributed structured records covering presentation, imaging, intervention and twelve-month outcome. The milestone makes the first subtype-stratified analyses possible, and results will be presented at the World TOS Summit in September.

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15 May 2026Collaborative

Country representatives appointed

Named contacts have been confirmed in the first group of participating countries. Representatives introduce new centers and act as the first point of contact for national societies.

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