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: Surgery
[{'content': 'In actinomycosis of the spine, the abscess usually erodes into which of the following structures? \nSelect and explain. \nA. Towards the skin, B. Interveebral disc, C. Into the pleural cavity, D. Into the reteropritoneal space', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Actinomycosis is most commonly caused by Actinomyces israelii. It is characterized by the presence of abscess with sinus tracts leading to the skin. Ref: Diagnostic Radiology : Musculo-Skeletal and Breast Imaging By Jaypee Brothers, 2nd Edition, Page 141.', 'role': 'assistant'}]