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: Medicine
Most common benign tumour of the oesophagus is: 
Select and explain. 
A. Lipoma, B. Hamartoma, C. Leiomyoma, D. Hemangioma
C: Leiomyoma
Answer: C: Leiomyoma 
Explanation: BENIGN TUMORS OF ESOPHAGUS

Usually mesenchymal in origin.
Arise within the esophageal wall.

Types of benign tumors:

Leiomyomas - Most common.
Fibromas
Lipomas
Hemangiomas
Neurofibromas
Lymphangiomas.