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The case of a 4-year-old girl who presented with fever and back pain after being scratched by a kitten is presented. The diagnosis of cat scratch disease osteomyelitis was made by the detection of Bartonella henselae DNA by PCR analysis of a rib abscess aspirate.
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Unilateral conjunctivitis with regional lymphadenitis has been designated Parinaud's oculoglandular syndrome (POGS). The cause has been attributed to various infectious agents, especially leptothrix and the unidentified agent of cat scratch disease (CSD). In 1983-84 the cause of CSD in lymph node and skin was established as small pleomorphic gram-negative bacilli. We now report identical bacteria in the conjunctival lesions of 9 of 24 patients with POGS. This confirms the belief that the CSD bacillus is a major cause of POGS.
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On the basis of phenotypic characterization and DNA relatedness determinations, the genus Afipia gen. nov., which contains six species, is described. The type species is Afipia felis sp. nov. (the cat scratch disease bacillus). Afipia clevelandensis sp. nov., Afipia broomeae sp. nov., and three unnamed not associated with cat-borne disease. All but one strain (Afipia genospecies 3) were isolated from human wound and respiratory sources. All Afipia species are gram-negative, oxidase-positive, nonfermentative rods in the alpha-2 subgroup of the class Proteobacteria. They are motile by means of a single flagellum. They grow on buffered charcoal-yeast extract agar and nutrient broth, but rarely on MacConkey agar, at 25 and 30 degrees C. They are urease positive; but they are negative in reactions for hemolysis, indole production, H2S production (triple sugar iron agar), gelatin hydrolysis, esculin hydrolysis, and peptonization of litmus milk. They do not produce acid oxidatively from D-glucose, lactose, maltose, or sucrose. The major cell wall fatty acids are 11-methyloctadec-12-enoic (CBr19:1), cis-octadec-11-enoic (C18:1omega7c), and generally, 9,10-methylenehexadecanote and 11,12-methyleneoctadecanoate; and there are only trace amounts of hydroxy acids. The guanineplus-cytosine content is 61.5 to 69 mol%. A. felis is positive for nitrate reduction and is delayed positive for acid production from D-xylose, but it is catalase negative. A. clevelandensis is negative in all of these tests. A. broomeae is weakly positive for catalase production and acid production from D-xylose, but it is negative for nitrate reduction.
A male two year old was admitted to the hospital with a one month history of fever. The physical examination was unrevealing. Abdominal ultrasound revealed multiple, circumscribed regions of low attenuation in the liver and a parapancreatic mass. Laparotomy and biopsy revealed multiple nodules in the liver. The histopathologic findings indicated the child had cat-scratch disease, which resolved with administration of gentamycin sulfate.
A 7-year-old boy was referred to us for evaluation of an enlarging neck mass. The results of his primary care physician's initial clinical examination suggested lymphadenopathy secondary to lymphadenitis, and the patient was treated over a 4-week period with two rounds of antibiotics. However, the mass did not resolve, and it subsequently became fluctuant. The patient was referred to our institution, where we diagnosed cat-scratch disease.
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