Lower border of pleuraMidclavicular lineMidaxillary lineParavertebral line
Lungs (& visceral pleura)6th rib8th rib10th rib
Parietal pleura8th rib10th rib
Right - upper border
Left - lower border
12th rib
Thoracentesis is typically performed between the 6th and 8th ribs along the midclavicular line, the 8th and 10th ribs along the midaxillary line (above image), and the 10th and 12th ribs along the paravertebral line.