Pneumopericardium
Air or other gas in the sac surrounding the heart (pericardium).
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- Pneumothorax
Free air in the chest outside the lung. Pneumothorax can occur spontaneously, follow a fractured rib or other trauma, occur in the wake of chest surgery, or be deliberately induced in order to collapse the lung.
- PNL (percutaneous nephrolithotripsy)
A technique for removing large and/or dense stones and staghorn stones. PNL is done via a port created by puncturing the kidney through the skin and enlarging the access port to 1 cm (about 3/8 inch) in diameter. There is no surgical incision. PNL is done under anesthesia and real-time live x-ray control (fluoroscopy). Because […]
- PNS (peripheral nervous system)
That portion of the nervous system that is outside the brain and spinal cord. The peripheral nervous system (PNS) is one of the two major divisions of the nervous system. The other is the central nervous system (CNS) which is made up of the brain and spinal cord. The nerves in the peripheral nervous system […]
- Podiatrist
A specialist in the diagnosis and care of foot disorders, including their medical and surgical treatment.
- Podocyte
A cell with branching tentacle-shaped extensions that constitutes the barrier through which blood is filtered in the glomerulus of the kidney. From the Greek pod- (foot) + -cyte (cell).