Clinical history

58 y-o man presenting with mild hemoptysis.

Radiological findings

Frontal chest radiograph. Ill-defined opacity obscurcing the left cardiac border. Left hilum not visible. Left hemidiaphragm elevated.
Lateral view. Well-defined interface parallel to the sternum.

CT findings

Axial CT sections. Left anterior opacity with a V-shaped appearance of its posterior border. Left hilar solid mass obliterating the upper lobe bronchus.
Coronal CT section. Left hilar solid mass bulging the fissure laterally. The contours of the mass are easily separated from the atelectatic lung. Large peribronchial and mediastinal extension.
Sagittal CT section. Anterior band of tissue corresponding to the atelectatic left upper lobe limited by the main fissure explaining the interface created on the lateral chest film.
FDG PET-CT. Strong uptake of the hilar mass sparing the distal atelectatic lung. Uptake of a lymph node between the mass and the trachea (ATS left 4).

Extra Examinations

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Final diagnosis

Atelectasis of the left upper lobe due to a bronchogenic carcinoma of the the left upper lobe bronchus. Large transbronchial and mediastinal extention. The tumour was classified T3N2M0 after the PET-CT and the patient treated by neoadjuvant chemotherapy.

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