Items tagged “rg_38_3_edit”

28 results found
Article

Canavan disease

Canavan disease, also known as spongiform degeneration of white matter (not to be confused with Creutzfeldt-Jakob Disease) or aspartoacylase deficiency, is a leukodystrophy clinically characterized by megalencephaly, severe mental and neurological deficits, and blindness.  Epidemiology Canavan...
Article

Canavan disease

Canavan disease, also known as spongiform degeneration of white matter (not to be confused with Creutzfeldt-Jakob Disease) or aspartoacylase deficiency, is a leukodystrophy clinically characterized by megalencephaly, severe mental and neurological deficits, and blindness.  Epidemiology Canavan...
Article

Hepatic abscess

Hepatic abscesses, like abscesses elsewhere, are localized collections of necrotic inflammatory tissue caused by bacterial, parasitic or fungal agents.  Epidemiology The frequency of individual infective agents as causes of liver abscesses are intimately linked to the demographics of the affec...
Article

Medication-related osteonecrosis of the jaw

Medication-related osteonecrosis of the jaw (MRONJ) describes the bony destruction of the jaw with exposed bone present for greater than eight weeks in the presence of current or previous antiresorptive and/or antiangiogenic medication use, and in the absence of radiation therapy to the head and...
Article

Medication-related osteonecrosis of the jaw

Medication-related osteonecrosis of the jaw (MRONJ) describes the bony destruction of the jaw with exposed bone present for greater than eight weeks in the presence of current or previous antiresorptive and/or antiangiogenic medication use, and in the absence of radiation therapy to the head and...
Article

Von Hippel-Lindau disease

Von Hippel-Lindau (vHL) disease is characterized by the development of numerous benign and malignant tumors in different organs (at least 40 types 1) due to mutations in the VHL tumor suppressor gene on chromosome 3. Epidemiology The disease is rare with an estimated prevalence of 1:35,000-50,...
Article

Von Hippel-Lindau disease

Von Hippel-Lindau (vHL) disease is characterized by the development of numerous benign and malignant tumors in different organs (at least 40 types 1) due to mutations in the VHL tumor suppressor gene on chromosome 3. Epidemiology The disease is rare with an estimated prevalence of 1:35,000-50,...
Article

Sickle cell disease

Sickle cell disease (SCD) (historically known as drepanocytosis) is a hereditary (autosomal recessive) condition resulting in the formation of abnormal hemoglobin (a hemoglobinopathy), which manifests as multisystem ischemia and infarction, as well as hemolytic anemia.  Hemoglobin SC (HbSC) dis...
Article

Sickle cell disease

Sickle cell disease (SCD) (historically known as drepanocytosis) is a hereditary (autosomal recessive) condition resulting in the formation of abnormal hemoglobin (a hemoglobinopathy), which manifests as multisystem ischemia and infarction, as well as hemolytic anemia.  Hemoglobin SC (HbSC) dis...
Article

Sickle cell disease

Sickle cell disease (SCD) (historically known as drepanocytosis) is a hereditary (autosomal recessive) condition resulting in the formation of abnormal hemoglobin (a hemoglobinopathy), which manifests as multisystem ischemia and infarction, as well as hemolytic anemia.  Hemoglobin SC (HbSC) dis...
Article

Sickle cell disease (skeletal manifestations)

Skeletal manifestations of sickle cell disease result from three interconnected sequelae of sickle cell disease 5:  vaso-occlusive crises resulting in bone infarcts and subperiosteal hemorrhages chronic anemia resulting in expansion of the medullary spaces infection These, in turn, can predi...
Article

Sickle cell disease (skeletal manifestations)

Skeletal manifestations of sickle cell disease result from three interconnected sequelae of sickle cell disease 5:  vaso-occlusive crises resulting in bone infarcts and subperiosteal hemorrhages chronic anemia resulting in expansion of the medullary spaces infection These, in turn, can predi...
Article

Acetabular labral tears

Acetabular labral tears, as the name implies, are tears involving the acetabular labrum of the hip.   With the increasing use of hip arthroscopy in orthopedic surgery since the 1970s pathologies of the acetabular labrum as a possible cause of chronic hip and groin pain have become more familiar...
Article

Anophthalmia

Anophthalmia refers to a complete absence of ocular development. It is often considered to represent the most severe form of microphthalmia. Pathology It can occur in three different situations: primary anophthalmia: complete absence of eye tissue due to a failure of the part of the brain tha...
Article

Maple syrup urine disease

Maple syrup urine disease (MSUD) is a very rare metabolic disorder. It is an inborn error of amino acid metabolism, which classically affects the brain tissue resulting in impairment or death if untreated. Epidemiology MSUD occurs in 1 in 185,000 births 9. Clinical presentation It usually ma...
Article

X-ray artifacts

X-ray artifacts can present in a variety of ways including abnormal shadows noted on a radiograph or degraded image quality, and have been produced by artificial means from hardware failure, operator error and software (post-processing) artifacts.  There are common and distinct artifacts for fi...
Article

Phenylketonuria

Phenylketonuria (PKU) is an inborn error of metabolism resulting from abnormal metabolism of phenylalanine. If untreated, patients can develop central nervous system impairment.  Epidemiology PKU is inherited as an autosomal recessive disorder with an incidence of 1 in 10,000. It is more commo...
Article

Osteoporosis

Osteoporosis is a metabolic skeletal disease defined as a reduction of bone mineral density below a defined lower limit of normal. The World Health Organization (WHO) defines osteoporosis as a T-score less than -2.5 SD. However, Z-scores are more reliable than T-scores (which are defined agains...
Article

Osteoporosis

Osteoporosis is a metabolic skeletal disease defined as a reduction of bone mineral density below a defined lower limit of normal. The World Health Organization (WHO) defines osteoporosis as a T-score less than -2.5 SD. However, Z-scores are more reliable than T-scores (which are defined agains...
Article

Acute hepatitis

Acute hepatitis occurs when the liver suffers an injury with a resulting inflammatory reaction. The cause of the injury can happen in multiple different ways, and imaging findings are often non-specific. Acute hepatitis is a clinical diagnosis and normal imaging appearance of the liver does not ...

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