Carcinoma of unknown primary

Carcinoma of unknown primary is a diagnosis given when doctors can’t determine where a cancer began. Carcinoma of unknown primary is rare, and it can be an aggressive type of cancer. Cancers form from mutated cells in one area of the body and can spread (metastasize) to other areas. In carcinoma of unknown primary, the Read more…

Carcinoid tumors

Carcinoid tumors are a type of slow-growing cancer that can arise in several places throughout your body. Carcinoid tumors, which are one subset of tumors called neuroendocrine tumors, usually begin in the digestive tract (stomach, appendix, small intestine, colon, rectum) or in the lungs. Carcinoid tumors often don’t cause signs and symptoms until late in Read more…

Carcinoid syndrome

Carcinoid syndrome occurs when a rare cancerous tumor called a carcinoid tumor secretes certain chemicals into your bloodstream, causing a variety of signs and symptoms. Carcinoid tumors occur most commonly in the gastrointestinal tract or lungs. Carcinoid syndrome typically occurs in people who have carcinoid tumors that are advanced. Treatment for carcinoid syndrome usually involves Read more…

Carbon monoxide poisoning

Carbon monoxide poisoning occurs when carbon monoxide builds up in your bloodstream. When too much carbon monoxide is in the air, your body replaces the oxygen in your red blood cells with carbon monoxide. This can lead to serious tissue damage, or even death. Carbon monoxide is a colorless, odorless, tasteless gas produced by burning Read more…

Canker sore

Canker sores, also called aphthous ulcers, are small, shallow lesions that develop on the soft tissues in your mouth or at the base of your gums. Unlike cold sores, canker sores don’t occur on the surface of your lips and they aren’t contagious. They can be painful, however, and can make eating and talking difficult. Read more…

Cancer of the ureter

Cancer of the ureter begins in the cells that line the inside of the tubes (ureters) that connect your kidneys to your bladder. Ureters are part of the urinary tract, and they carry urine produced by the kidneys to the bladder. Cancer of the ureter is uncommon. It occurs most often in older adults and Read more…

Cancer

Cancer refers to any one of a large number of diseases characterized by the development of abnormal cells that divide uncontrollably and have the ability to infiltrate and destroy normal body tissue. Cancer often has the ability to spread throughout your body.   Symptoms Signs and symptoms caused by cancer will vary depending on what Read more…

Calciphylaxis

Calciphylaxis (kal-sih-fuh-LAK-sis) is a serious, uncommon disease in which calcium accumulates in small blood vessels of the fat and skin tissues. Calciphylaxis causes painful skin ulcers and may cause serious infections that can lead to death. People who have calciphylaxis usually have kidney failure and are on dialysis or recently had a kidney transplant. The Read more…