Bornstein G, et al. - Authors sought to ascertain if, among patients with a negative temporal artery biopsy (TAB), clinical features existed that could differentiate between patients with an eventual diagnosis of giant cell arteritis (GCA) and those without arteritis. Furthermore, they inspected the eventual diagnoses of patients without arteritis. It was noted that fulfilment of the ACR criteria, a clinical diagnosis of polymyalgia rheumatica (PMR), and high platelet levels served as the best predictors for diagnosis of GCA among patients with a negative TAB. Data exhibited that such features could be useful in the diagnostic workup of patients with a negative TAB.