Figure 1 Serial chest computed tomography (CT) and bronchoscopy images from admission through the 2-month follow-up(A) Chest computed tomography (CT) at admission in mid-2024 showed a large right upper-lobe mass with thick-walled cavitation. (B) Five days after admission, chest CT revealed extensive consolidation and cavitation in the right upper lobe with enlarged mediastinal lymph nodes. (C) Five days after admission, bronchoscopy showed clinically significant white purulent secretions in the right upper lobe. (D) One month after admission, follow-up chest CT demonstrated substantial improvement in the lung abscess and consolidation. (E) Two months after admission, chest CT showed further absorption of inflammatory exudates and consolidation, along with clinically significant regression of hilar and mediastinal lymph nodes.