title: Histopathology and immunohistologic demonstration of the distribution of Rickettsia typhi in fatal murine typhus.
abstract: An 81-year-old woman had chills, fever, nausea, vomiting, and epigastric pain. On day 3 she had hematuria and was treated with trimethoprim-sulfamethoxazole. On day 5 she had a cough, hypotension, anemia, azotemia, and elevated hepatic enzyme levels. Her condition deteriorated with thrombocytopenia, anuria requiring dialysis, edema, and hypoalbuminemia. Treatment with chloramphenicol and doxycycline was started on day 10. By day 11, she was in hypotensive shock; on day 12 she had seizures and died. Murine typhus was diagnosed by demonstration of antibodies to Rickettsia typhi by indirect immunofluorescence. Necropsy revealed interstitial pneumonia, pulmonary edema, hyaline membranes, alveolar hemorrhages, petechiae and vasculitis in the central nervous system, interstitial myocarditis, multifocal interstitial nephritis and hemorrhages, splenomegaly, portal triaditis, and mucosal hemorrhages in urinary tract. Immunofluorescent R. typhi were demonstrated in the lungs, brain, kidneys, liver, and heart. This unusual death occurred in an elderly patient without rash who was treated too late with antirickettsial drugs.
authors.affiliation: Department of Pathology, University of Texas Medical Branch, Galveston 77550.
authors.forename: D H
authors.initials: DH
authors.lastname: Walker
authors.forename: F M
authors.initials: FM
authors.lastname: Parks
authors.forename: T G
authors.initials: TG
authors.lastname: Betz
authors.forename: J P
authors.initials: JP
authors.lastname: Taylor
authors.forename: J W
authors.initials: JW
authors.lastname: Muehlberger
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000907:Antibodies, Bacterial / Q000032:analysis; D005260:Female; D005455:Fluorescent Antibody Technique; D006801:Humans; D009393:Nephritis / Q000175:diagnosis / Q000473:pathology; D012128:Respiratory Distress Syndrome / Q000175:diagnosis / Q000473:pathology; D012286:Rickettsia typhi / Q000302:isolation & purification*; D014437:Typhus, Endemic Flea-Borne / Q000175:diagnosis* / Q000473:pathology; D014552:Urinary Tract Infections / Q000175:diagnosis / Q000473:pathology; D014657:Vasculitis / Q000175:diagnosis / Q000473:pathology
chemical_list: D000907:Antibodies, Bacterial