Lung Cancer — Imaging Patterns

A 62-year-old woman with a 30 pack-year smoking history presents with progressive dyspnoea and chest pain. Chest X-ray shows a 4 cm mass in the right lower lobe with obliteration of the right heart border and right costophrenic angle. CT chest demonstrates the mass abutting the diaphragm and mediastinal pleura. There is no evidence of distant metastases. Based on imaging findings, what is the TNM stage for T classification?

A 62-year-old woman with no significant smoking history presents with progressive dyspnoea over 6 months. She has a history of pulmonary fibrosis (usual interstitial pneumonia pattern on prior CT). Chest X-ray now shows a peripheral nodule (1.5 cm) in the right lower lobe with a smooth, well-defined margin and no cavitation. CT chest confirms a solitary nodule with ground-glass halo sign and no pleural involvement. What is the most likely histological type and what is the significance of the ground-glass halo?

A 58-year-old male smoker (40 pack-years) presents with a 3-week history of persistent cough and haemoptysis. Chest X-ray shows a 3 cm irregular opacity in the right upper lobe with spiculated margins and an air bronchogram sign. CT chest confirms a peripheral mass with pleural indentation. Bronchoscopy reveals endobronchial involvement. What is the most likely histological type of lung cancer?

A 58-year-old male smoker (40 pack-years) presents with persistent cough and haemoptysis for 3 weeks. Chest X-ray shows a 3 cm irregular mass in the right upper lobe with spiculated margins and pleural indentation. CT chest with contrast reveals the mass abutting the mediastinum without invasion, and a 1.5 cm ipsilateral hilar lymph node. No distant metastases are seen. What is the most likely histological type of lung cancer based on the imaging pattern and clinical presentation?

A 62-year-old woman with no smoking history presents with progressive dyspnoea and chest pain. Chest X-ray shows a 4 cm well-circumscribed mass in the right lower lobe periphery with a halo sign on CT. PET-CT demonstrates moderate FDG uptake (SUVmax 4.2) in the mass and no distant metastases. Bronchoscopy shows no endobronchial lesion. What is the most likely diagnosis?