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Click 40 year old male with intercostal lung herniation. Scout view from chest CT. (A) Frontal view showed an area of increased radiolucency in the left upper lobe. (B) Lateral view showing a well-circumscribed ovoid shape radiolucent lesion in the left hemithorax. Magnified views of the frontal (C) and lateral view (D) showing an area more radiolucent than normal lung parenchyma containing vascular markings

Click 40 year old male with intercostal lung herniation. Scout view from chest CT. (A) Frontal view showed an area of increased radiolucency in the left upper lobe. (B) Lateral view showing a well-circumscribed ovoid shape radiolucent lesion in the left hemithorax. Magnified views of the frontal (C) and lateral view (D) showing an area more radiolucent than normal lung parenchyma containing vascular markings

Click 40 year old male with intercostal lung herniation. Non-enhanced inspiratory chest computed tomography, lung window, axial plane, width/level of 1500/-699 HU, the region proved to contain lung markings, belonging to the anterior bronchopulmonary segment of the left upper lobe. The dimensions of the herniated lung parenchyma were calculated 5.45cm axially x 2cm antero-posteriorly x 4.7cm craniocaudally.
(Protocol: GE LightSpeed VCT 64, 100 mAs; 120 kV, 1.3 mm slice thickness; 1.15 pitch)

Click 40 year old male with intercostal lung herniation. Expiratory chest computed tomography, lung window (width/level of 1500/-599 HU) with Valsalva maneuver, in axial plane where the herniated lung portion seems to protrude beyond the rib cage through a chest wall defect.
(Protocol: GE LightSpeed VCT 64, 100 mAs; 120 kV, 1.3 mm slice thickness; 20mm spacing)

Click 40 year old male with intercostal lung herniation. Maximum intensity projection reformat (MIP, width/level of 1009/-488 HU) in sagittal plane. The herniated lung parenchyma shows no obvious signs of vessel compression or lung tissue strangulation. In cases where the hernia orifice is narrow and there is suspicion of pulmonary artery branches occlusion computed tomographic angiography of the pulmonary artery is mandatory.
(Protocol: GE LightSpeed VCT 64, 100 mAs; 120 kV, 1.3 mm slice thickness; 1.15 pitch)

Click 40 year old male with intercostal lung herniation. Minimum intensity projection (MinIP, width/level of 668/-733 HU) in coronal oblique plane demonstrates no obvious signs of bronchial tree compression at the level of the lung herniation.
(Protocol: GE LightSpeed VCT 64, 100 mAs; 120 kV, 1.3 mm slice thickness; 1.15 pitch)