| 1. | Renal agenesis | The absence of one (unilateral) or both (bilateral) kidneys at birth. Bilateral renal agenesis : Bilateral renal agenesis is uncommon and is a serious condition. See Potter syndrome. More… 1.7 KB |
| 2. | Uhl anomaly | was first described in 1952. It is a very rare congenital heart disease with a partial or total loss of the myocardial muscle in the right ventricle. Fetal echocardiographic findings: More… 0.4 KB |
| 3. | Ulcerative colitis | Ulcerative colitis (Colitis ulcerosa, UC) is a form of inflammatory bowel disease (IBD). Ulcerative colitis is a form of colitis, a disease of the intestine, specifically the large intestine More… 1.9 KB |
| 4. | Ultrasound | Inaudible sound in the frequency range of approx. 20,000 to 10 billion (109) cycles/sec. Ultrasound has different velocities that differ in density and elasticity from one kind of tissue to More… 1.0 KB |
| 5. | Umbilical cord | In placental mammals, the umbilical cord (also known as the birth cord or funiculus umbilicalis) is the connecting cord from the developing embryo or fetus to the placenta. During prenatal More… 1.0 KB |
| 6. | Umbilical cord ulceration and intestinal atresia | Umbilical cord ulceration and intestinal atresia is a rare congenital disease that leads to intestinal atresia, umbilical cord ulceration and severe intrauterine haemorrhage. Only 15 cases More… 0.5 KB |
| 7. | Umbilical hernia | Umbilical hernia is a congenital malformation, especially common in infants of African descent, and more frequent in girls. An Acquired umbilical hernia directly results from increased More… 2.0 KB |
| 8. | Uncombable hair syndrome | Uncombable hair syndrome, also called Pili trianguli et canaliculi[1]:639, Spun-glass hair, and Cheveux incoiffable, is a rare structural anomaly of the hair with a variable degree of More… 1.3 KB |
| 9. | Uniparental disomy | Uniparental disomy (UPD) occurs when a person receives two copies of a chromosome, or part of a chromosome, from one parent and no copies from the other parent. Pathophysiology : More… 2.6 KB |
| 10. | Upington disease | Upington disease is an extremely rare malformation disorder having only one published source claiming its existence on one family in three generations from South Africa. An autosomal More… 0.8 KB |
| 11. | Upper Respiratory Passageways | Air is carried to and from the lungs in a series of tubes in which no gas exchange occurs. Air enters through the nose, where it is warmed, filtered, and moistened as it passes over the More… 2.0 KB |
| 12. | Urachal cancer | Urachal cancer is a rare form of bladder cancer. The urachus is an embryonic structure located between dome of the bladder and the umbilicus and urachal cancer can occur at any site along More… 0.4 KB |
| 13. | Urachal cyst | A urachal cyst is a sinus remaining from the allantois during embryogenesis. See also: Urachal cancer |
| 14. | Urbach Wiethe disease | Urbach–Wiethe disease (also known as lipoid proteinosis and hyalinosis cutis et mucosae) is a rare recessive genetic disorder, with less than 300 reported cases since its discovery. It was More… 2.1 KB |
| 15. | Urban Rogers Meyer syndrome | Urban-Rogers-Meyer syndrome, also called Urban syndrome, is an extremely rare congenital disease, one reported in only two cases. Urban et al. (1979) was the first to describe the disease. More… 0.4 KB |
| 16. | Uremia | Uremia is a term used to loosely describe the illness accompanying kidney failure (also known as renal failure), in particular the nitrogenous waste products associated with the failure of More… 1.0 KB |
| 17. | Uridine monophosphate synthetase | Uridine monophosphate synthetase (UMPS) (orotate phosphoribosyl transferase and orotidine-5'-decarboxylase) is the enzyme that catalyses the formation of uridine monophosphate (UMP), an More… 1.0 KB |
| 18. | Urinary tract neoplasm | The urinary system (also known as excretory system or the genitourinary system) is the organ system that produces, stores, and eliminates urine. In humans it includes two kidneys, two More… 3.8 KB |
| 19. | Urocanic aciduria | Urocanic aciduria, also known as urocanate hydratase deficiency or urocanase deficiency, is an autosomal recessive metabolic disorder caused by a deficiency of the enzyme urocanase. It is a More… 1.2 KB |
| 20. | Urocanic aciduria | Urocanic aciduria, also known as urocanate hydratase deficiency or urocanase deficiency, is an autosomal recessive metabolic disorder caused by a deficiency of the enzyme urocanase. It is a More… 1.2 KB |
