Английская Википедия:Basidiobolomycosis

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Шаблон:Short description Шаблон:Infobox medical condition (new) Basidiobolomycosis is a fungal disease caused by Basidiobolus ranarum.[1][2] It may appear as one or more painless firm nodules in the skin which becomes purplish with an edge that appears to be slowly growing outwards.[3][2] A serious but less common type affects the stomach and intestine, which usually presents with abdominal pain, fever and a mass.[3]

B. ranarum, can be found in soil, decaying vegetables and has been isolated from insects, some reptiles, amphibians, and mammals.[4] The disease results from direct entry of the fungus through broken skin such as an insect bite or trauma, or eating contaminated food.[1][3] It generally affects people who are well.[4]

Diagnosis is by medical imaging, biopsy, microscopy, culture and histopathology.[4] Treatment usually involves amphotericin B and surgery.[3][5]

Although B. ranarum is found around the world, the disease Basidiobolomycosis is generally reported in tropical and subtropical areas of Africa, South America, Asia and Southwestern United States.[3] It is rare.[3] The first case in a human was reported from Indonesia in 1956 as a skin infection.[5]

Signs and symptoms

Basidiobolomycosis may appear as a firm nodule in the skin which becomes purplish with an edge that appears to be slowly growing outwards.[3][2] It is generally painless but may feel itchy or burning.[3][2] There can be one lesion or several, and usually on the arms or legs of children.[2] Pus may be present if a bacterial infection also occurs.[3] The infection can spread to nearby structures such as muscles, bones and lymph nodes.[4]

A serious but less common type affects the stomach and intestine, which usually presents with tummy ache, fever and a lump.[3][6] Lymphoedema may occur.[3][5]

Mechanism

Basidiobolomycosis is a type of Entomophthoromycosis, the other being conidiobolomycosis, and is caused by Basidiobolus ranarum, a fungus belonging to the order Entomophthorales.[4] B. ranarum has been found in soil, decaying vegetables and has been isolated from insects some reptiles, amphibians, and mammals.[4] The disease results from direct entry of the fungus through broken skin such as an insect bite or trauma, or eating contaminated food.[1][3] Diabetes may be a risk factor.[3] The exact way in which infection results is not completely understood.[3]

Diagnosis

Diagnosis is by culture and biopsy.[5]

A review in 2015 showed that the most common finding on imaging of the abdomen was a mass in the bowel, the liver, or multiple sites and bowel wall thickening. Initially, many were considered to have either a cancer of the bowel or Crohns disease.[7][8]

Treatment

Treatment usually involves itraconazole or amphotericin B, combined with surgical debridement.[5] Bowel involvement may be better treated with voriconazole.[4]

Epidemiology

The condition is rare but emerging.[3] Men and children are affected more than females.[3] The disease is generally reported in tropical and subtropical areas of Africa, South America, Asia and several cases in Southwestern United States.[4][3]

History

The first case in a human was reported from Indonesia as a skin infection in 1956.[5] In 1964, the first case involving stomach and intestine was reported.[5]

Society and culture

Cases among gardeners in Arizona, US, may indicate an occupational hazard, but is unproven.[5]

Other animals

Basidiobolomycosis has been reported in a dog.[9]

References

Шаблон:Reflist

External links

Шаблон:Medical resources Шаблон:Mycoses