Articles

Articles are a collaborative effort to provide a single canonical page on all topics relevant to the practice of radiology. As such, articles are written and edited by countless contributing members over a period of time. A global group of dedicated editors oversee accuracy, consulting with expert advisers, and constantly reviewing additions.

10 results found
Article

Ebola virus disease

Ebola virus disease (EVD) (also known as Ebola haemorrhagic fever (EHF) or simply Ebola) is a viral haemorrhagic disease caused by the Ebola Filovirus. Ebola is an extremely virulent virus with case fatality rates of approximately 70% 1. Epidemiology First recognized in 1967 after polio vaccin...
Article

Haemoglobinopathies

Introduction A hemoglobinopathy is a genetic disorder which alters the structure of hemoglobin 1.  The result is reduced oxygen carrying capacity of the blood to the tissues. Terminology Types of hemoglobinopathies include the following: Sickle cell disease (Hb S) Sickle cell trait (HB AS) ...
Article

Haemolytic uraemic syndrome

Haemolytic uraemic syndrome (HUS) is a multisystem thrombotic microangiopathic disease characterised by the triad of renal failure, haemolytic anaemia and thrombocytopenia. It is the most common cause of renal failure in infancy and childhood requiring dialysis.  There are two forms of this syn...
Article

Paraneoplastic syndromes

Paraneoplastic syndromes occur secondary to the indirect effects of a malignancy and occur remotely to the primary malignancy. Symptoms are mediated by cytokines, hormones or immune cross-reactivity. These syndromes can cause a diverse range of symptoms and can affect multiple systems. Epidemio...
Article

POEMS syndrome

POEMS syndrome is an acronym for a rare multisystem disorder comprising of a minimum of three of the following features in the setting of a plasma cell dyscrasia: P: polyneuropathy O: organomegaly E: endocrinopathy M: monoclonal gammopathy S: skin changes (including hyperpigmentation and sk...
Article

Rosai-Dorfman disease

Rosai-Dorfman disease (RDD), also known as sinus histiocytosis with massive lymphadenopathy (SHML), is a rare benign idiopathic proliferative disease that involves phagocytic histiocytes. Epidemiology The disease predominantly occurs in young adults with a mean age at presentation of 21 years....
Article

Rubinstein-Taybi syndrome

Rubinstein-Taybi syndrome (RTS) is a very rare genetic multi-system disorder primarily characterised by mental retardation, broad and often angulated thumbs and halluces, and distinctive facial features. Epidemiology The estimated incidence is 1 in 100,000-125,000 live births 5. Clinical pres...
Article

Sezary syndrome

Sézary syndrome (SS) is a type of cutaneous T cell lymphoma. It is sometimes considered an advanced and leukaemic form of cutaneous T cell lymphoma (CTCL). Clinical presentation It is clinically characterised by an extensive erythematous rash covering most of the body as well as presence of ma...
Article

Sweet syndrome

Sweet syndrome (acute febrile neutrophilic dermatosis) is characterised by a constellation of clinical symptoms, physical features, and pathologic findings which include: fever neutrophilia tender erythematous skin lesions (papules, nodules, and plaques) a diffuse infiltrate consisting predo...
Article

Trousseau syndrome

Trousseau syndrome is referred to by a number of names, such as migratory thrombophlebitis and cancer-associated thromboembolism, but is essentially the association of venous thrombosis provoked by a yet to be diagnosed malignancy.

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