This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
Askin&;s tumour is- 
Select and explain. 
A. Primitive neuroectodermal tumour of chest wall, B. Merkell cell carcinoma of skin, C. Paraneoplastic tumour of chest wall, D. Common bile duct tumour
A: Primitive neuroectodermal tumour of chest wall
Answer: A: Primitive neuroectodermal tumour of chest wall 
Explanation: Develop from soft tissues of chest. A member of ewings family of tumours. A rare case of thoracopulmonary tumour. Computed tomography. Histopathology. Histo studies.. Used for diagnosis.