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
Multiple connective tissue disorder not associated with ? 
Select and explain. 
A. SLE, B. Systemic sclerosis, C. Polymyositis, D. Sjogren's syndrome
D: Sjogren's syndrome
Answer: D: Sjogren's syndrome 
Explanation: Ans. is 'd' i.e., Sjogren's syndromeMixed connective tissue disorder :?The term mixed connective tissue disease is used to describe a disease with clinical features that are a mixture of the features of SLE, systemic sclerosis, and Polymyositis.The disease is characterized serologically by high titers of antibodies to ribonucleoprotein paicle-containing Ul ribonucleoprotein.Typically, mixed connective tissue disease presents with synovitis of the fingers, Raynaud phenomenon and mild myositis, but renal involvement is modest and there is a good response to coicosteroids, at least in the sho term.Serious complications of mixed connective tissue disease include pulmonary hypeension, interstitial lung disease, and renal disease.