Table 4.

CT changes in atypical Pneumonia.

Pneumonia	GGO with lobular distribution	GGO diffuse pattern	Centrilobular nodules	Segmental consolidation	Interlobular septal thickening	Pleural effusion
Viral	++	+++	++	+	++	–
Legionella	+++			+++		++
Mycoplasma	++		++	++	+
Chlamydia	++		++	++	+
Aspergillosis	++	+	++ (+/− halo)	++
Candida	+		++		+

+Sign indicate the relative frequency of the findings from lowest to highest.