title: Peri-anal abscess--the relationship between peri-anal abscess, hepatitis B and sexual behavior.
abstract: Twenty-two patients with a peri-anal abscess or peri-anal fistula were studied selectively for the presence of HBsAg and anti-HBs. In 14 male and 8 female patients studied, the incidence of anti-HBs was 6 and of HBsAg 1. Positive findings occurred only in European male patients who invariably showed frequent homosexual contacts. It is concluded that, in homosexual patients with peri-anal abscess, the presence of HBsAg and anti-HBs should be determined as a matter of routine and all preventive measures should be taken for possible contamination with hepatitis B virus until proven negative.
mesh_terms: D000038:Abscess / Q000453:epidemiology* / Q000276:immunology; D000328:Adult; D001004:Anus Diseases / Q000453:epidemiology* / Q000276:immunology; D005260:Female; D006509:Hepatitis B / Q000453:epidemiology*; D006510:Hepatitis B Antibodies / Q000032:analysis; D006514:Hepatitis B Surface Antigens / Q000302:isolation & purification; D006716:Homosexuality; D006801:Humans; D008297:Male; D008875:Middle Aged; D012003:Rectal Fistula / Q000453:epidemiology / Q000276:immunology
chemical_list: D006510:Hepatitis B Antibodies; D006514:Hepatitis B Surface Antigens