A spectrum of Thymic mucosa-associated lymphoid tissue lymphoma and Thymic amyloidosis in the patient with Auto immune disease: a case series.BACKGROUND
 The thymus is associated with an immunodeficient status, autoimmune disease (AD), and the common thymic tumor, thymoma. 
Autoimmune disease
We encountered two rare thymic tumors, thymic mucosa-associated lymphoid tissue (MALT) lymphoma and localized thymic amyloidosis, both in the presence of Sjögren's syndrome (SjS). 
Sjögren's syndrome
Only SSc case was received preceding steroid medication. 
Steroid medication
On chest computed tomography (CT), tumors contained solid part and some cystic part at various rated. 
Chest computed tomography (CT)
All patients were surgically treated with total thymectomy and they are alive without recurrence. 
Total thymectomy