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: Pathology
[{'content': 'Gilchrist disease is: \nSelect and explain. \nA. North American Blastomycosis, B. South American Blastomycosis, C. Australian Blastomycosis, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: North American Blastomycosis: Gilchrist’s disease.\nNORTH AMERICAN BLASTOMYCOSIS\n(Gilchrist Disease)\xa0\nNorth American blastomycosis is\xa0a mycotic\xa0infection caused by Blastomyces dermatitidis and may occur either in a cutaneous form or in a systemic form involving bones, liver, lungs, subcutaneous tissues and other organs.\nReference: Shafer’s Textbook of ORAL PATHOLOGY Eighth Edition page no 351,352', 'role': 'assistant'}]