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': 'Mucocutaneous lesion associated with neoplasia \nSelect and explain. \nA. Pemphigus vegetans, B. Parapemphigus, C. ParaneopLastic pemphigus, D. Familial benign pemphigus', 'role': 'user'}, {'content': "Answer: C \nExplanation: Paraneoplastic pemphigus is a severe variant of pemphigus, associated with an underlying neoplasm — most frequently non Hodgkin's lymphoma, chronic lymphocytic Leukemia, thymoma, and castleman disease. Tumor antigens are hypothesized to evoke an immune response that leads to the development of an autoimmune response to intercellular adhesins (plakins). This autoantibody response leads to blistering in mucosa and other epithelia.", 'role': 'assistant'}]