Introduction: Bullae are air filled spaces in lung parenchyma which develop in various diseases and cause respiratory compromise. Bulla which occupies one third of hemithorax is considered as a giant bulla.

Case series: This case series consists of eleven cases of giant bullae with varied clinical and radiological features. Common presentations include breathlessness, associated para-septal emphysema and complications like pneumothorax.

Conclusion: Patients presenting with acute chest symptoms should also be evaluated for bullous disease and Computed tomography of chest can differentiate pneumothorax from giant bullae.