Table 1– Available radiographs for comparison in community-acquired pneumonia patients with parapneumonic effusion and their limitations
LDRLERCCT
Total radiographs5790181
Measurable radiographs50 (87.7)64 (71.1)148 (81.8)
Loculation demonstrated3124
Uninterpretable4 (7.0)25 (28.8)9 (5.0)
Limitation of interpretationIncorrect side n=2, incorrect radiograph type n=1,
massive effusion n=1		Bilateral effusion n=13, inadequate visualisation of sulcus n=6,
under penetrated n=4, post-thoracentesis n=1, diaphragm elevation n=1		Post-thoracentesis n=4, contralateral effusion n=2, hydropneumothorax n=1, massive effusion n=1, image missed n=1

  • Data are presented as n or n (%). LDR: lateral decubitus radiograph; LER: lateral erect radiograph; CCT: chest computed tomography.