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Table 1 The clinical characteristics of patients

From: Imaging features and clinical value of 18F-FDG PET/CT for predicting airway involvement in patients with relapsing polychondritis

Characteristics

RP patients with airway involvement

Number of patients

52

 Treated

13 (25.0%)

 Untreated

39 (75.0%)

Age (year)a

48 [37.75-54.25]

Course of disease (month)a,b

8.5 [3.75-12]

Sex

 Male

33 (63.5%)

 Female

19 (36.5%)

Main symptoms

 Cough

47 (90.4%)

 Excessive sputum

31 (59.6%)

 Shortness of breath

40 (76.9%)

 Sore throat

5 (9.6%)

 Hoarseness

11 (21.2%)

 Chest pain

7 (13.5%)

 Fever

13 (25.0%)

Commorbidities

9 (17.3%)

 Malignancy

2 (22.2%)

  Prostate cancer

1 (11.1%)

  Non-Hodgkin lymphoma

1 (11.1%)

 Other autoimmune diseases

3 (33.3%)

  EGPA

2 (22.2%)

  Hashimoto’s throiditis

1 (11.1%)

 Nodular goiter

2 (22.2%)

 Metabolic disease

2 (22.2%)

Serological index

 Inflammatory markersa

  ESR (mm/h)

39.5 [20-59] (n = 44)

  CRP (mg/L)

1.24 [0.29-7.75] (n = 40)

 Complete blood counta

  WBC (10^9/L)

9.54 [7.69-12.33] (n = 48)

  Neutrophil (%)

71.75 [63.3-78.8] (n = 48)

  Platelet (10^9/L)

254 [134-342.25] (n = 46)

  Hemoglobin (g/L)

113 [105-120.5] (n = 47)

 Autoimmune markers

  RF ( +) (n = 41)

0 (0.0%)

  MPO ( +) (n = 37)

1 (2.7%)

  PRO-3 ( +) (n = 37)

1 (2.7%)

 ANA ( ±) (n = 39)

5 (12.8%)

Lung function tests

36 (69.2%)

 Five grades to evaluate airway obstruction

36 (69.2%)

  Normal

1 ( 2.8%)

  Mild

4 (11.1%)

  Moderate

5 (13.9%)

  Severe

13 (36.1%)

  Very severe

13 (36.1%)

 GOLD system

21 (58.3%)

  Stage I

0 (0.0%)

  Stage II

10 (47.6%)

  Stage III

7 (33.3%)

  Stage IV

4 (19.0%)

Bronchoscopy

43 (82.7%)

 Positive

43 (100%)

Methods of diagnosis

 Auricular biopsy (n = 37)

28 (75.7%)

 Bronchoscopic biopsy (n = 36)

4 (11.1%)

 Biopsy of nasal septum (n = 2)

1 (50.0%)

 Clinically

19 (36.5%)

  1. EGPA Eosinophilic granulomatosis with polyangiitis, ESR Erythrocyte sedimentation rate, CRP C-reactive protein, WBC White blood cell, RF Rheumatoid factor, MPO Myeloperoxidase, PRO-3 proteinase 3, ANA Anti-nuclear antibody
  2. aAll continuous variables are described with median and interquartile range (IQR)
  3. bfrom the beginning of the symptoms to the day of diagnosis of RP