Pleurisy Causes & Risk Factors. Causes and Risk Factors for Pleurisy. Pleurisy can develop as a complication of several conditions. In some cases, the condition is idiopathic (i.e., occurs with no known cause). The most common cause for pleurisy is viral infection (e.g., influenza, pneumonia).
An extrarenal pelvis is a normal variation from the usual anatomy, and it does not indicate a state of disease. However, renal pelvises do not usually protrude in such a manner, and it may appear as if there is a blockage in the renal pelvis that is preventing urine from emptying, which is a serious medical condition.
1. the bend of the upper limb; the area around the joint connecting the arm and forearm; see also elbow joint. Called also cubitus. 2. any angular bend.Æ. The elbow joint connects the large bone of the upper arm, the humerus, with the two smaller bones of the lower arm, the radius and ulna. It is one of the body's more versatile joints, with a combined hinge and rotating action allowing the arm to bend and the hand to make a half turn.