Pulmonary hamartoma
• Differential diagnosis • carcinoma of the lung
• • • • • -rarely have calssificattions -vascular convergence sign(血管集束征) -margin is not well-defined -growth fast -CECT
Pulmonary hamartoma
• Clinical Features
• -usually asymptomatic • -occasionally present with haemoptysis(咯血), bronchial obstruction and cough
Pulmonary hamartoma
Pulmonary hamartoma
• CT
• • • • well-defined nodules or masses heterogenous Fat -40 to -120HU Popcorn Calcification
Pulmonary hamartoma
• • • • • MRI T1 - heterogeneous signal -mainly intermediate signal -foci of high signal represent fat -low signal regions representing fibrous or calcific material • T2 • -high signal due to fat and cartilaginous components • -low signal regions representing fibrous or calcific material