Significant laboratory data | (i) WBC 11,100/μl (ii) Hb 11.6 g/dl (iii) Plt 285,000/μl (iv) Brain MRI: Thin corpus calusom splenium suggestive of mid-central cortical atrophy (v) Spiral chest CT: Multiple cystic structures measuring about 60x55 × 40 mm in mid-zone of right lung contains multiple air-containing cysts with variable size and septation suggestive of type 1 Congenital pulmonary airway malformation. Diffuse patchy air space opacities in both upper and lower lobes with multiple air space nodules suggestive of bronchopneumonia | (i) WBC 7300/μl (ii) Hb 10.4 g/dl (iii) Plt 242,000/μl (iv) Fibrinogen 611 mg/dl (v) ESR 72 mm/hr (vi) CRP >150 mg/l (vii) LDH 801 IU/l (viii) Sweat NaCl test normal (ix) Lung biopsy: emphysematous lung admix by areas of bronchiectasis | (i) WBC 3000/μl (32% lymph.) (ii) Hb 6.6 g/dl (iii) Plt 488,000/μl (iv) Flow cytometry: CD3 71%, CD4 12%§, CD8 55%†, CD16 23%, CD19 6%§, CD56 23%, CD14 16%†, CD4/CD8 0.22§ (v) Karyotype study on bone marrow culture: normal (46,XY) (vi) Bone marrow aspiration biopsy/immunohistochemistry: erythroid hypoplasia with parvovirus B19 infection; 4–5% immature myeloid cells; about 30% hematogones (vii) Left leg lesion skin biopsy: lymphocytic vasculitis (viii) ANA 3.9 U/ml† (ix) dsDNA (IgG) 26.0 IU/ml‡ (x) dsDNA (IgM) 32.7 IU/ml† (xi) ACLA IgM 51.1 U/ml† (xii) Anti Ro (SSA) IU/ml 83.2† (xiii) IgG 16.34 g/l† (xiv) IgM 1.97 g/l† (xv) IgA 1.21 mg/dl§ (xvi) IgE 15.8 IU/ml (normal) (xvii) ASMA neg. (xviii) P-ANCA (Anti MPO) neg. (xix) C-ANCA (Anti PR3) 132.0 U/ml† | (i) WBC 22,500/μl (ii) Hb 11.3 g/dl (iii) Plt 363,000/μl (iv) ESR: 92 mm/hr (v) CRP>150 mg/l (vi) Procalcitonin 10 ng/ml (vii) Ferritin 225.7 ng/ml (viii) Chest HRCT: COVID-19 | (i) WBC 2800/μl (33% lymph.), (ii) Hb 9.3 g/dl (iii) Plt 422,000/μl (iv) D-dimer 570† (v) Procalcitonin 0.82 ng/ml |