tutor (plural tutors) 1  One who teaches another (usually called a student, learner, or tutee) in a one-on-one or small-group interaction. ( 2 Britain) A university officer responsible for students in a particular hall. ( 3 obsolete) One who has the charge of a child or pupil and his estate; a guardian.
The accumulation of fluid in the pleural space, referred to as a pleural effusion, usually indicates an underlying abnormality. A thoracentesis may be performed to identify the reason (diagnostic) and/or to relieve the discomfort and symptoms (therapeutic) of excessive fluid in the pleural space. A diagnostic thoracentesis involves the removal of fluid for analysis (pleural fluid analysis).
Figure 1: Showing a large pleural effusion, diaphragm and liver. Figure 2: Shows patient in sitting position with ultrasound probe placed over the thoracentesis area. Figure 3: Muscle, fluid, lung, and measurements. Illustration 1: Overview of thoracentesis technique. Figure 4: Pleural effusion with rib shadow.