Figure 2
From: Asymptomatic secondary hyperparathyroidism can mimic sacroiliitis on computed tomography
Example of joint alterations in sHPT. Axially reconstructed high-resolution CT images. (A) Healthy control patient with normal SIJ. (B) Patient with secondary hyperparathyroidism: note the subchondral bone resorption mimicking erosions (black arrowheads) as well as the sclerotic rim around the resorption zone (white arrowheads). (B) Patient with secondary hyperparathyroidism: note the irregular, pseudo-widened left joint space (black arrowheads) compared to the regular joint space on the right.
