Most common mediastinal tumor:
Neurogenic tumor
Thymoma
Lymphoma
Bronchogenic cyst
M/C Mediastinal tumor - Neurogenic tumor M/C anterior mediastinal tumor - Thymoma Mediastinal Tumors in Adults Tumor Type Percentage of Total Location Neurogenic tumors 21 Posterior Cysts 20 All Thymomas 19 Anterior Tumor Type Percentage of Total Location Lymphomas 13 Anterior/middle Germ cell tumors 11 Anterior Mesenchymal tumors 7 All Endocrine tumors 6 Anterior/middle Mediastinal Tumors in Children Tumor Type Percentage of Total Location Neurogenic tumors 400 Posterior Lymphomas 180 Anterior/middle Cysts 18 All Germ cell tumors 11 Anterior Mesenchymal tumors 9 All Thymomas Rare Anterior MEDIASTINAL MASSES (MM) MC anterior MM: Thymoma Q MC middle MM: Cyst (Pericardial cyst is MC) MC posterior MM: Neurogenic tumors MC MM (overall): Neurogenic tumors MM seen in all three compaments of mediastinum: Lymphoma, bronchogenic cyst & mesenchymal tumors IOC for diagnosis of MM (except neurogenic tumors): CT IOC for diagnosis of neurogenic tumors: MRI