Recurrent oral ulcers (ROUs) are the most common disorder of the oral cavity in the community. Although many etiological causes such as trauma, genetic, nutritional, infectious, immune, drug-mediated, rheumatological, endocrinological have a role, it is commonly idiopathic, known as recurrent aphthous stomatitis (RAS). 1-3 Indeed, RAS has accounted for 25% of oral ulcers in adults and 40% in children. 2 The most challenging issue for the clinician to deal with in the diagnosis is to distinguish whether oral ulcers are associated with primarily Behçet's disease (BD) and other systemic inflammatory processes such as inflammatory bowel diseases and connective

Introduction: Systemic sclerosis (SSc) or scleroderma is a clinically heterogeneous disease. Autoantibodies associated with different clinical features may help in predicting organ involvement. Complete blood count (CBC) parameters and neutrophil/lymphocyte (NLR), monocyte/lymphocyte (MLR), and platelet/lymphocyte (PLR) ratios, which are considered biomarkers of systemic inflammation, have been reported many times in various rheumatologic diseases. Studies related to the usefulness of the CBC to assess the severity of SSc are still lacking. This study seeks to determine whether CBC parameters associated with organ involvement, when evaluated together with clinical features and autoantibodies, can additionally contribute to risk estimation. Methods: Adult patients with SSc (n = 130) and healthy control (n = 129) groups were enrolled in the study. Epidemiological, clinical, laboratory, and radiological findings were obtained by examining patient records. Results: PLR, NLR, and MLR were related to organ involvement. Statistically significant results were obtained with hemoglobin (≤ 13.0 g/dl), lymphocyte count (≤ 1,900 × 10 3 /ml), and mean platelet volume (≤ 8.0 fl) to estimate the risk of interstitial lung disease (p < 0.05). When the lymphocyte count was 1,400 (10 3 /ml) or less, there was a significantly greater risk of pulmonary hypertension. Neutrophil volume ≤ 141 indicated gastrointestinal tract involvement. Conclusions: Simple hematological parameters can be used for predicting SSc-related organ involvements.

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Objective: Behçet's Disease (BD) is a polygenic and chronic autoinflammatory multisystemic vasculitis disease characterised by mucocutaneous, musculoskeletal, neurological, gastrointestinal and ophthalmologic lesions. There has been no specific test or serum marker to measure and determine the diagnosis and severity of BD. Purpose:The study aimed to investigate the diagnostic performance of haematological parameters as MLR (monocyte to lymphocyte ratio), NLR (neutrophil to lymphocyte ratio), PLR (platelet to lymphocyte ratio), MPV (mean platelet volume), MPVPR (mean platelet volume to platelet ratio), LMR (lymphocyte to monocyte ratio), LPM (lymphocyte and platelet multiplication), WLP (lymphocyte and leukocyte multiplication), RDW (red blood cell distribution width) and PCT (plateletcrit) in BD and compare these with disease activity and clinical findings.Methods: A total of 266 participants (49 healthy control and 217 BD patients) were recruited from the rheumatology department in a single-centre as a case-control study. The laboratory data were obtained from the electronic registration database.BD Activity scores (BDCAF/Behcet's Disease Current Activity Form) were calculated. Laboratory findings of BD patients and healthy controls were compared and evaluated.Results: RDW, Platelet, PCT, NLR and PLR values were significantly higher in patient group than in the healthy controls. However, haemoglobin, MPVPR and LMR were significantly lower in the patient group which compared with the healthy controls.LPM in BD with genital ulcers, WLP in BD with genital ulcers and arthritis, MPR in BD with uveitis, RDW in BD with thrombosis and neuro-Behçet's disease (NBD), PLR in NBD were observed to be higher. However, LMR in NBD and MPV in BD with thrombosis were lower than those without. There was a positive correlation between BDCAF score and RDW, and NLR.

Background/Objective: Behçet disease (BD) is not a single unique entity but a syndrome with different clinical phenotypes that can involve arterial and venous vessels of all sizes. To date, there has been no specific test or serum marker to measure and determine the severity of BD, and diagnosis remains based on clinical findings. This study aimed to assess lower extremity venous wall thickness (VWT) measured by ultrasound and laboratory findings and diagnostic performance in patients with BD.Methods: A total of 106 participants were recruited from the rheumatology department in this single-center, case-control study. Participants meeting the eligibility criteria were divided into healthy controls (n = 52) and BD (n = 54). The VWT values of the common femoral vein, great saphenous vein, and popliteal vein were measured using ultrasonography. Laboratory data were obtained from the electronic registration database. Venous wall thicknesses and laboratory findings in patients with BD and healthy subjects were compared.Results: Venous wall thickness of the lower extremity veins was higher in the BD group and higher in those with a history of deep vein thrombosis than in those without. The mean leukocyte, monocyte, erythrocyte sedimentation rate (ESR), C-reactive protein, plateletcrit (PCT), red cell distribution width (RDW), mean platelet volume (MPV) values, and monocyteto-lymphocyte ratio (MLR) were higher in BD patients than in the control group. There was a correlation among increased VWT, ESR, PCT, MPV, RDW, and MLR.Conclusions: C-reactive protein, ESR, MPV, PCT, MLR, RDW, and VWT can be used to assist in the diagnosis of BD.

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In this study, in addition to hematological markers such as neutrophil/lymphocyte (NLR), platelet/lymphocyte (PLR), monocyte/lymphocyte (MLR) ratio, systemic inflammatory index (SII), systemic inflammation response index (SIRI), and systemic inflammation aggregate index (AISI) were evaluated in systemic lupus erythematosus (SLE) patients. It was aimed to determine the importance of new hematological markers as an inflammation marker in SLE, evaluate the relationship of these parameters with SLE disease activity (DA), and investigate their sensitivity in showing very high DA. 91 SLE patients and 100 healthy controls were included in the study. The Systemic Lupus Erythematosus Disease Activity Index 2000 (SLEDAI-2K) was used to evaluate the DA. SLE patients were divided into patients with SLEDAI-2K

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