Abdulsamet Erden

1 Introduction Still's disease (SD), formerly named as adult-onset Still's disease (AOSD), is a systemic autoinflammatory disorder of unknown etiology, typically affecting young adults and considered to have a multigenic background. In addition to typical features such as high fever, salmon-colored rash, lymphadenopathy, and joint involvement, the disease may also result in severe complications, including pulmonary involvement, cardiac involvement and macrophage activation syndrome (MAS) [1, 2].

1 Introduction Chronic kidney disease is a progressive disorder impacting over 10% of the global population, affecting more than 800 million people worldwide [1]. Chronic kidney disease (CKD) is defined as either structural or functional kidney damage, or a sustained reduction in glomerular filtration rate (GFR) below 60 mL/min/1.73 m2 for a duration of at least 3 months, irrespective of the underlying cause [2].

Abbreviations SSc (Systemic Sclerosis) GI (Gastrointestinal) CT (Computed Tomography) SMA (Skeletal Muscle Area) SMRA (Skeletal Muscle Radiation Attenuation) L1/L3 (First/Third Lumbar Vertebra) ACR/EULAR (American College of Rheumatology / European League Against Rheumatism) CRP (C-Reactive Protein) ESR (Erythrocyte Sedimentation Rate) BMI (Body Mass Index) ESPEN (European Society of Clinical Nutrition and Metabolism) PFT/PFTs (Pulmonary Function Test/Tests) FVC (Forced Vital Capacity) DLCO...