The effect of clinical features and glucocorticoids on biopsy findings in giant cell arteritis.

Predictors for positive findings in TAB By bivariate logistic regression, TAB performed before or on the same day as initial treatment was associated with histologic findings consistent with GCA (OR 2.86; 95 % CI 1.06–7.70) compared to those biopsied 1–3 days after treatment initiation, although this association did not reach statistical significance in analysis adjusted for sex (OR 2.54; 95 % CI 0.93–6.96).

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