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Table 2 The significance of inhalation, inflammatory, autoimmune and edema/hemorrhagic lung diseases regarding lesion distribution and shape

From: Centri-lobular pulmonary nodules on HRCT: incidence and approach for etiological diagnosis

Lesion characteristic/ P value Inhalation Inflammation Autoimmune Hemorrhage/EDEMA
Number Few 0.102 0.773 0.067 0.516
Multiple 0.207 0.279 0.113 0.430
Location Unilateral 0.096 0.329 0.425 0.651
Bilateral
Upper lobe 0.006** 0.430 0.886 0.346
Middle lobe and lingual 0.452 0.430 0.886 0.346
Lower lobe 0.435 0.738 0.316 0.626
Shape Well defined 0.004** 0.791 0.773 0.246
Ill defined 0.001** 0.279 0.606 0.197
  1. Chi-square test, P value > 0.05: Non significant (NS); P value < 0.05*: Significant (S); P value < 0.01**: highly significant (HS)