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.
Venous sampling is a diagnostic procedure that involves insertion of a catheter into a specific vein under imaging guidance to remove blood samples for laboratory analysis. Abnormal levels of certain substances in the blood such as hormones may indicate the presence of disease in the organ or tissue that produces them.