What exactly is a heart attack? Most heart attacks happen when a clot in the coronary artery blocks the supply of blood and oxygen to the heart. Often this leads to an irregular heartbeat-called an arrhythmia-that causes a severe decrease in the pumping function of the heart.
Oncocytoma can be described as a tumor that is mainly constituted out of oncocytes. These are actually epithelial cells, containing excessive quantities of mitochondria. This excess leads to a cytoplasm that is acidophilic and granular.
Onychomycosis, more commonly known as toenail fungus, is a progressive disease that is often ignored due to the lack of pain or other symptoms during the initial stages. Typically it is caused by tinea species (fungus), but it can also be caused by candida species (yeast).