This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Radiology
A classical expansive lytic lesion in the transverse process of a vertebra is seen in - 
Select and explain. 
A. Osteosarcoma, B. Aneurysmal bone cyst, C. Osteoblastoma, D. Metastasis
B: Aneurysmal bone cyst
Answer: B: Aneurysmal bone cyst 
Explanation: Both ABC and osteoblastoma can arise in the posterior elements of vertebrae (i.e. Pedicle, lamina, transverse process or spinous process).
ABC produces lytic (lucent) lesion, while osteoblastoma produces lytic lesion surrounded by a rim of sclerosis.