| Ectopic kidney | |
|---|---|
| Other names | Renal ectopia |
 | |
| Ectopic crossed fused kidney in a fetus approx. 34 weeks | |
| Specialty | Nephrology |
An ectopic kidney is a kidney that is not located in its usual position (ectopia). This condition results from the kidney failing to ascend from its origin in the true pelvis or from a superiorly ascended kidney located in the thorax. [1]
It has an incidence of approximately 1/900. [2]
An ectopia is a displacement or malposition of an organ or other body part, which is then referred to as ectopic.
Ectopic pregnancy is a complication of pregnancy in which the embryo attaches outside the uterus. Signs and symptoms classically include abdominal pain and vaginal bleeding, but fewer than 50 percent of affected women have both of these symptoms. The pain may be described as sharp, dull, or crampy. Pain may also spread to the shoulder if bleeding into the abdomen has occurred. Severe bleeding may result in a fast heart rate, fainting, or shock. With very rare exceptions, the fetus is unable to survive.
The nephron is the minute or microscopic structural and functional unit of the kidney. It is composed of a renal corpuscle and a renal tubule. The renal corpuscle consists of a tuft of capillaries called a glomerulus and a cup-shaped structure called Bowman's capsule. The renal tubule extends from the capsule. The capsule and tubule are connected and are composed of epithelial cells with a lumen. A healthy adult has 1 to 1.5 million nephrons in each kidney. Blood is filtered as it passes through three layers: the endothelial cells of the capillary wall, its basement membrane, and between the podocyte foot processes of the lining of the capsule. The tubule has adjacent peritubular capillaries that run between the descending and ascending portions of the tubule. As the fluid from the capsule flows down into the tubule, it is processed by the epithelial cells lining the tubule: water is reabsorbed and substances are exchanged ; first with the interstitial fluid outside the tubules, and then into the plasma in the adjacent peritubular capillaries through the endothelial cells lining that capillary. This process regulates the volume of body fluid as well as levels of many body substances. At the end of the tubule, the remaining fluid—urine—exits: it is composed of water, metabolic waste, and toxins.
Horseshoe kidney, also known as ren arcuatus, renal fusion or super kidney, is a congenital disorder affecting about 1 in 500 people that is more common in men, often asymptomatic, and usually diagnosed incidentally. In this disorder, the patient's kidneys fuse to form a horseshoe-shape during development in the womb. The fused part is the isthmus of the horseshoe kidney. The abnormal anatomy can affect kidney drainage resulting in increased frequency of kidney stones and urinary tract infections as well as increase risk of certain renal cancers.
Self Immolation is a record label and publishing company run by J. G. Thirlwell. Originally an actual label for Thirlwell's self-released early Foetus EPs and albums, Self Immolation became more akin to a vanity label for Thirlwell's releases on Some Bizzare Records and Wax Trax! Records. Most Self Immolation releases are identified by a call number beginning with a Foetal-inspired "WOMB" designator.
Ectopia is an album from Steroid Maximus. It was released on May 28, 2002 by Ipecac Recordings.
Ectopic beat is a disturbance of the cardiac rhythm frequently related to the electrical conduction system of the heart, in which beats arise from fibers or group of fibers outside the region in the heart muscle ordinarily responsible for impulse formation. An ectopic beat can be further classified as either a premature ventricular contraction (PVC), or a premature atrial contraction (PAC).
Ectopia cordis or ectopic heart is a congenital malformation in which the heart is abnormally located either partially or totally outside of the thorax. The ectopic heart can be found along a spectrum of anatomical locations, including the neck, chest, or abdomen. In most cases, the heart protrudes outside the chest through a split sternum.
A pelvic kidney, also known as an ectopic kidney, is a normal kidney located in the pelvis, instead of the abdomen. This occurs when a kidney does not ascend from its original location in the pelvis to its final location during prenatal development. They usually present no symptoms, but can increase risk of certain illnesses and healthcare problems.
Ectopic ureter is a medical condition where the ureter, rather than terminating at the urinary bladder, terminates at a different site. In males this site is usually the urethra, in females this is usually the urethra or vagina. It can be associated with renal dysplasia, frequent urinary tract infections, and urinary incontinence. Ectopic ureters are found in 1 of every 2000–4000 patients, and can be difficult to diagnose, but are most often seen on CT scans.
Junctional ectopic tachycardia (JET) is a rare syndrome of the heart that manifests in patients recovering from heart surgery. It is characterized by cardiac arrhythmia, or irregular beating of the heart, caused by abnormal conduction from or through the atrioventricular node. In newborns and infants up to 6 weeks old, the disease may also be referred to as His bundle tachycardia or congenital JET.
Ectopic enamel is an abnormality in the formation of enamel. It is tooth enamel that is found in an unusual location (ectopia), such as at the root of a tooth. Enamel pearls are a type of ectopic enamel.
Duplicated ureter or duplex collecting system is a congenital condition in which the ureteric bud, the embryological origin of the ureter, splits, resulting in two ureters draining a single kidney. It is the most common renal abnormality, occurring in approximately 1% of the population.
Ectopic thymus is a condition where thymus tissue is found in an abnormal location (ectopia). It usually does not cause symptoms, but may leads to a mass in the neck that may compress the trachea and the esophagus. It is thought to be the result of either a failure of descent or a failure of involution of normal thymus tissue. It may be diagnosed with radiology, such as an ultrasound or magnetic resonance imaging. If it causes illness, surgery can be used to remove it. Recurrence after surgery is very unlikely.
Ectopic testis is used to describe the testis leaving the inguinal canal and entering a site other than the scrotum (ectopia). Usually, it results from obstruction of the scrotal entrance or from overdevelopment and lengthening of a segment of the gubernaculum.
An ectopic pancreas is an anatomical abnormality in which pancreatic tissue has grown outside its normal location (ectopia) and without vascular or other anatomical connections to the pancreas. It is a disease which is congenital and is also known as heterotopic, accessory, or aberrant pancreas.
Ectopia, ectopic, or ectopy may refer to:
Crossed dystopia is a rare form of renal ectopia where both kidneys are on the same side of the spine. In many cases, the two kidneys are fused together, yet retain their own vessels and ureters. The ureter of the lower kidney crosses the midline to enter the bladder on the contralateral side. Both renal pelves can lie one above each other medial to the renal parenchyma or the pelvis of the crossed kidney faces laterally. Urogram is diagnostic.
An ectopic tooth, also known as an impacted tooth, is a tooth that develops in an abnormal position (ectopia) and fails to erupt into its normal location in the oral cavity. Ectopic teeth can cause a variety of symptoms, such as pain, swelling, and infection, and they can lead to more serious complications if left untreated.
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