All statistics for Abscess
Prevalence/Incidence of Abscess: Online Medical Books
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Liver abscess:
Causes and incidence
(Professional Guide to Diseases (Eighth Edition))
In pyogenic liver abscesses, the common infecting organisms are Escherichia coli, Klebsiella, Staphylococcus, Streptococcus, Bacteroides, and enterococcus. The infecting organisms may invade the liver directly after a liver wound or they may spread from the lungs, skin, or other organs by the hepatic artery, portal vein, or biliary tract. Pyogenic abscesses are generally multiple and commonly follow cholecystitis, peritonitis, pneumonia, and bacterial endocarditis.
An amebic abscess results from infection with the protozoa Entamoeba histolytica, the organism that causes amebic dysentery. Amebic liver abscesses usually occur singly, in the right lobe.
There are 8 to 16 cases of liver abscess for every 100,000 people hospitalized, and there is a 5% to 30% mortality rate. Most cases occur in people in their 60s and 70s.
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Source: Professional Guide to Diseases (Eighth Edition), 2005
Anorectal abscess and fistula:
Causes and incidence
(Professional Guide to Diseases (Eighth Edition))
The inflammatory process that leads to abscess may begin with an abrasion or tear in the lining of the anal canal, rectum, or perianal skin and subsequent infection by Escherichia coli, staphylococci, or streptococci. Trauma may result from injections for treatment of internal hemorrhoids, enema-tip abrasions, puncture wounds from ingested eggshells or fish bones, or insertion of foreign objects. Other preexisting lesions include infected anal fissure, infections from the anal crypt through the anal gland, ruptured anal hematoma, prolapsed thrombosed internal hemorrhoids, and septic lesions in the pelvis, such as acute appendicitis, acute salpingitis, and diverticulitis. Systemic illnesses that may cause abscesses include ulcerative colitis and Crohn’s disease. However, many abscesses develop without preexisting lesions.
As the abscess produces more pus, a fistula may form in the soft tissue beneath the muscle fibers of the sphincters (especially the external sphincter), usually extending into the perianal skin. The internal (primary) opening of the abscess or fistula is usually near the anal glands and crypts; the external (secondary) opening, in the perianal skin.
The peak incidence of anorectal abscess occurs in people in their 30s and 40s, but there’s also a high occurrence in infants. Men are affected two to three times more often than women. About 30% of patients have a previous history of abscess.
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Source: Professional Guide to Diseases (Eighth Edition), 2005
Throat abscesses:
Causes and incidence
(Professional Guide to Diseases (Eighth Edition))
Peritonsillar abscess is a complication of acute tonsillitis, usually after streptococcal or staphylococcal infection. It occurs more commonly in adolescents and young adults than in children.
Acute retropharyngeal abscess results from infection in the retropharyngeal lymph glands, which may follow an upper respiratory tract bacterial infection. Most common pathogens are beta-hemolytic Streptococcus and Staphylococcus aureus. These lymph glands begin to atrophy after age 2. Acute retropharyngeal abscess most commonly affects infants and children younger than age 2.
Chronic retropharyngeal abscess may result from tuberculosis of the cervical spine (Pott’s disease) and may occur at any age.
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Source: Professional Guide to Diseases (Eighth Edition), 2005
About prevalence and incidence statistics:
The term 'prevalence' of Abscess usually refers to the estimated population
of people who are managing Abscess at any given time.
The term 'incidence' of Abscess refers to the annual diagnosis rate,
or the number of new cases of Abscess diagnosed each year.
Hence, these two statistics types can differ:
a short-lived disease like flu can have high annual incidence but low prevalence,
but a life-long disease like diabetes has a low annual incidence but high prevalence.
For more information see about prevalence and incidence statistics.
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