Centrilobular Lung Nodules

• bronchiolitis
• endobronchial spread of TB, MAC
• bronchopenumonia
• hypersensitivity pneumonitis
• endobronchial spread of tumor
• pneumoconiosis
• organizing pneumonia (BOOP)
• histiocytosis
• edema or vasculitis

Random Lung Nodules

• miliary TB
• miliary fungal infections
• hematogenous mets
• sarcoidosis

Perilymphatic Lung Nodules

• sarcoid
• lymphangitic spread of tumor
• silicosis and CWP
• amyloid
• LIP

Right Pneumonectomy Syndrome

• occurs most commonly in children and adolescents
• right posterior deviation of the mediastinum
• counter-clockwise rotation of heart and great vessels
• displacement of hyperinflated left lung into right anterior hemithorax
• develop airway obstruction from compressoin between left pulmonary artery and descening aorta; compression of left main bronchus, distal trachea, or LLL bronchus

Crazy Paving Pattern

Thickened inter and intralobular structures, forming polygonal shapes, with no architectural distortion. Diseased lung well demarcated from normal lung forming a geographic pattern.

• alveolar proteinosis (classically)
• sarcoidosis
• pulmonary hemorrhage
• PCP
• mucinous bronchoalveolar carcinoma
• pulmonary venoocculusive disease
• ARDS

Jepperson-Wong-Lai Syndrome

• Bilateral fat filled inguinal hernias
• caused by concomitant weakness in both inguinal rings plus herniation of intra-abdominal fat
• asymptomatic
• 50% male
• Risk factors: obesity, midwest
• Associations: fatty liver disease, heart disease, diabetes
• Benign incidental finding