Interstitial

Pneumocystis jiroveci (carinii) pneumonia (PCP), Cryptococcosis (rare) LIP (in children), rarely CMV

Lobar

Bacterial infection

Nodular

Kaposi’s sarcoma (KS), septic emboli, fungal infection, non-Hodgkin’s lymphoma

Miliary

Tuberculosis (TB)

Pneumatocele

PCP, staphylococcal pneumonia

Pleural effusion

KS, TB, lymphoma

Mediastinal and/or hilar lymphadenopathy

Mycobacteriosis, lymphoma, fungal infection