system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Extranodal marginal zone (MALT) lymphomas can involve thymus in the setting of:
assistant
The correct answer is  Extranodal marginal zone (MALT) lymphomas It involve the thymus in the setting of Sjogren's syndrome or other autoimmune disorders The lymphoma cells often express IgA instead of IgM on their surface. Other tumors that involve thymus: Castleman's disease Germ cell tumors Carcinoid tumors thymoma. Ref: Harrison, E-18, Chapter e-20.