Visceral adipose tissue in granulomatosis with polyangiitis: association with disease activity parameters.

Objective: To assess the body composition (BC) of patients with granulomatosis with polyangiitis (GPA) compared to healthy controls, emphasizing visceral adipose tissue (VAT) and associated BC parameters with disease activity, the damage index, and inflammatory parameters in patients with GPA.

Methods: This study was conducted in 43 patients with GPA and 43 healthy controls matched by sex, age, and body mass index (BMI). BC was analyzed using dual-energy X-ray absorptiometry (DXA).

Assessing bone impairment in ankylosing spondylitis (AS) using the trabecular bone score (TBS) and high-resolution peripheral quantitative computed tomography (HR-pQCT).

Objectives: To compare bone quality using the trabecular bone score (TBS) and bone microarchitecture in the distal tibia using high-resolution peripheral quantitative computed tomography (HR-pQCT) in ankylosing spondylitis (AS) patients and healthy controls (HC).

Methods: Areal bone mineral density (aBMD) and TBS (TBS iNsight software) were evaluated using DXA (Hologic, QDR 4500); while volumetric bone mineral density (vBMD) and bone microarchitecture were analyzed in the distal tibia using HR-pQCT (Scanco) in 73 male patients with AS and 52 age-matched HC.

Results: AS patients were a mean 41.