Overview Salivary gland tumors are abnormal growths that develop in the salivary glands, which are responsible for producing saliva to aid in digestion and maintain oral health. These tumors can be benign (non-cancerous) or malignant (cancerous). Most salivary gland tumors occur in the parotid glands, located just in front of the ears, but they can also develop in the submandibular, …

Tuberous sclerosis complex (TSC) is a rare genetic disease that causes noncancerous tumors to grow throughout your body. This condition, sometimes known simply as tuberous sclerosis, can affect people in many ways. People with less severe cases may see very few effects and have a normal lifespan. Severe cases can lead to serious complications. TSC is a disease that may …

Truncus arteriosus is a rare congenital heart defect present at birth in which a single large blood vessel comes out of the heart instead of two separate arteries. Normally, the heart has two main arteries: the pulmonary artery, which carries blood to the lungs, and the aorta, which carries oxygen rich blood to the rest of the body. In truncus …

Trigger finger is a condition that affects the tendons in the fingers or thumb, causing pain, stiffness, and difficulty moving the affected finger. The condition occurs when the tendon that controls finger movement becomes inflamed or irritated, making it difficult for the tendon to glide smoothly through its sheath. As a result, the finger may catch or lock when bent …

Tricuspid valve regurgitation is a heart valve disorder in which the tricuspid valve does not close properly, allowing blood to flow backward from the right ventricle into the right atrium. The tricuspid valve normally ensures that blood moves in the correct direction through the heart toward the lungs. When regurgitation occurs, the heart must work harder to pump blood effectively. …

Tricuspid valve disease refers to conditions that affect the tricuspid valve, one of the four valves of the heart. This valve is located between the right atrium and the right ventricle and helps control the flow of blood through the heart. When the tricuspid valve does not function properly, blood flow between the heart chambers becomes disrupted. The valve may …

Tricuspid atresia is a rare congenital heart defect present at birth in which the tricuspid valve, located between the right atrium and right ventricle of the heart, does not develop properly. Because this valve is missing or blocked, blood cannot flow normally from the right atrium to the right ventricle. As a result, oxygen poor blood cannot easily reach the …

Trichomoniasis is a common sexually transmitted infection caused by a parasite called Trichomonas vaginalis. The infection mainly affects the genital tract and is most commonly seen in women, although men can also become infected. Many people with trichomoniasis do not experience symptoms, which means the infection can remain unnoticed and spread to others through sexual contact. When symptoms occur, they …

Trichinosis is a parasitic infection caused by roundworms of the Trichinella species. People become infected by eating raw or undercooked meat that contains the larvae of the parasite, most commonly pork or wild game such as wild boar or bear. After entering the body, the larvae mature in the intestines and later travel through the bloodstream to muscle tissues, where …

Transverse myelitis is a rare neurological condition that occurs when inflammation damages a section of the spinal cord. This inflammation disrupts the communication between nerves in the spinal cord and the rest of the body. As a result, people may experience problems with movement, sensation, and normal body functions. The condition can develop suddenly or gradually over several hours to …