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Pleural Effusion
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Pleural effusions are abnormal collections of fluid in the pleural space, which is a potential space between the parietal
(chest cavity) pleura and the visceral (lung) pleura. Normally, the pleural space contains a small amount of fluid having
a low protein concentration of 1 g/dL that is formed in the apical region of the parietal pleura and is drained through the
lymphatic system.
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Index of Suspicion
Case 1: Lymphadenopathy, Prolonged Hematuria, Proteinuria, and Weight Loss in a Teenage Boy
Case 2: Red, Swollen, Painful Eye in a 12-year-old Boy With Methylmalonic Acidemia
Case 3: Ptosis and Diplopia After a Respiratory Infection in a 7-year-old Girl
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An Infant Who Has Dome-Shaped Papules
A 6-month-old African American girl presents for a well-child visit and is found to have multiple yellow-brown, dome-shaped
papules over her face, neck, and trunk.