‘Slope sign’: a feature of large vessel vasculitis?

Ultrasound (US) scanning in the diagnosis of large vessel giant cell arteritis (LV-GCA) is becoming more prevalent, with the advantage of being non-invasive and free of ionising radiation.1 The recent European League against Rheumatism (EULAR) recommendations suggest that US should be the first-line investigation for cases of suspected GCA where adequate equipment and expertise is available.2 3 US is also having a more prominent role in disease...