Abstract

Isolated agenesis of the right upper lobe of lung is very rare and can remain undiagnosed till adulthood. Patient may present with abnormal chest radiograph depicting features of volume loss, which is impossible to differentiate from other more common causes like lobar collapse, producing this appearance. Contrast enhanced computed tomography (CECT) of chest can delineate exact bronchial and vascular anatomy, thereby providing the diagnosis. However given the rarity of this condition, it can pose a diagnostic challenge to the radiologist. We report a case of young asthmatic girl presenting with recent onset cough and shortness of breath. She was referred to the department of radiology for CECT chest following an abnormal chest radiograph. After a thorough imaging study, a diagnosis of agenesis of right upper lobe was made.

Key words: Computed tomography; agenesis; right upper lobe.