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': "Mondor's disease of breast is a variant of: \nSelect and explain. \nA. Mycotic infection, B. Malignancy, C. Thrombophlebitis, D. Lymphadenitis", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Mondor\'s disease is a variant of thrombophlebitis that involves the superficial veins of the anterior chest wall and breast. In 1939, Mondor described the condition as "string phlebitis," a thrombosed vein presenting as a tender, cord-like structure. Frequently involved veins include the lateral thoracic vein, the thoracoepigastric vein, and, less commonly, the superficial epigastric vein. Typically, a woman presents with acute pain in the lateral aspect of the breast or the anterior chest wall. A tender, firm cord is found to follow the distribution of one of the major superficial veins Ref: Schwaz\'s principle of surgery 9th edition, chapter 17.', 'role': 'assistant'}]