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: Medicine
Most common cause of pleural effusion in AIDS patients 
Select and explain. 
A. Kaposi sarcoma, B. TB, C. Pneumocystis Jiroveci, D. Mycoplasma
A: Kaposi sarcoma
Answer: A: Kaposi sarcoma 
Explanation: Ans. is 'a' i.e., Kaposi sarcoma Ophthalmological diseases The most common abnormal findings on fundoscopic examination are cotton wool spots. CMV retinitis is the most severe ocular complication and occurs when CD4 T-cells count is less than 50/ml. It typical presents as perivascular hemorrhage and exudae with Cottage-Cheese appearance. Acute retinal necrosis syndrome, also called progressive outer retinal necrosis (PORN) is caused by HSV and VZV Other manifestations are chorioretinitis by toxoplasma and P carinii, kaposi sarcoma of eyelid, and lymphoma.