Signs and symptoms of an effusion vary depending on the underlying disease, but dyspnea, cough, and pleuritic chest pain are common. Chest examination of a patient with pleural effusion is notable for dullness to percussion, decreased or absent tactile fremitus, decreased breath sounds, and no voice transmission.
Medical Definition of velamentous insertion. : attachment of the umbilical cord to the chorion beyond the margin of the placenta.
Here's what it says about marginal cord insertion/battledore placenta (I'm paraphrasing) 'usually an incidental finding at birth, battledore placenta is of little clinical significance.' read: it's no biggie and it's not going to cause anything bad to happen.