<prompt> Most common cause of mass in posterior mediastinum in children -RhabdosarcomaDuplication cyst of oesphagusLymphomaNeuroblastoma  <response>: Ans. is d i.e., Neuroblastoma Most common posterior mediastinal masses in children are neurogenic tumors. -- Posterior mediastinal mass in children I Neurogenic tumors Most common 2 Foregut cyst Second most common 3 Lymphoma Third most common 4 Germ cell tumors 5 Lymphangiomas and agiomas Mediastinal neurogenic tumors are Mediastinal neuroblastoma Ganglioneuroma Ganglioneuroblastoma Schwannoma Mediastinal pheochromocytoma 