Hepatosplenic Abscesses and Osteomyelitis of the Spine in an Immunocompetent Adult with Cat Scratch Disease.

We present an 18-year-old, immunocompetent Austrian military conscript with cervical lymphadenopathy, fever, back-pain, and persistent inflammation markers despite two weeks of antimicrobial therapy with ampicillin/sulbactam. All specific laboratory investigations for identification of a specific etiology, including blood cultures and autoantibodies, were inconspicuous. Abdominal computed tomography showed multiple hypodense hepatosplenic lesions and osteomyelitis of the thoracic and lumbar spine with base plate fracture. Based on the patient's history, clinical presentation, and radiological findings, serology for cat scratch disease (CSD) was performed and high B. henselae specific IgM and IgG antibodies were detected. Due to its variety of clinical presentations, diagnosis of CSD is challenging, especially in the absence of a history of specific exposure. This case report shall remind the physician that cat scratch disease is a common disease, mainly presenting with fever and lymphadenopathy in young patients. Nevertheless CSD has many different and rare forms of presentations, including hepatosplenic lesions and bone involvement as shown in this case.

Prevalence and risk factor assessment of Tropheryma whipplei in a rural community in Gabon: a community-based cross-sectional study.

Tropheryma whipplei is the causative agent of Whipple's disease and has been detected in stools of asymptomatic carriers. Colonization has been associated with precarious hygienic conditions. There is a lack of knowledge about the epidemiology and transmission characteristics on a population level, so the aim of this study was to determine the overall and age-specific prevalence of T. whipplei and to identify risk factors for colonization. This molecular epidemiological survey was designed as a cross-sectional study in a rural community in Central African Gabon and inhabitants of the entire community were invited to participate. Overall prevalence assessed by real-time PCR and sequencing was 19.6% (95% CI 16-23.2%, n=91) in 465 stool samples provided by the study participants. Younger age groups showed a significantly higher prevalence of T. whipplei colonization ranging from 40.0% (95% CI 27.8-52.2) among the 0-4 year olds to 36.4% (95% CI 26.1-46.6) among children aged 5-10 years. Prevalence decreased in older age groups (p<0.001) from 12.6% (95% CI 5.8-19.4%; 11-20 years) to 9.7% (95% CI 5.7-13.6) among those older than 20. Risk factor analysis revealed young age, male sex, and number of people sharing a bed as factors associated with an increased risk for T. whipplei carriage. These results demonstrate that T. whipplei carriage is highly prevalent in this part of Africa. The high prevalence in early life and the analysis of risk factors suggest that transmission may peak during childhood facilitated through close person-to-person contacts.

Presence of varicose veins in cancer patients increases the risk for occurrence of venous thromboembolism.

BACKGROUND: Cancer patients are at increased risk of venous thromboembolism (VTE). OBJECTIVE: We investigated the association of a history of VTE, superficial thrombophlebitis, or the presence of varicose veins with the occurrence of VTE during the course of cancer. METHODS: Cancer patients were recruited in a prospective cohort study, the Vienna Cancer and Thrombosis Study. Patients who had VTE within 3 months before study inclusion were excluded. At study inclusion, history of VTE, history of superficial thrombophlebitis, and presence of varicose veins were recorded. Primary end point was the occurrence of symptomatic VTE. Hazard ratios were obtained using the competing risk analysis according to Fine and Gray. RESULTS: The cohort consisted of 1270 patients followed over a median of 590 days. A history of VTE was found in 66 patients (5.2%), superficial thrombophlebitis in 79 patients (6.2%), and varicose veins in 160 patients (12.6%). Ninety-eight patients (7.7%) developed VTE during follow-up. The hazard ratios for the risk of VTE in patients with a history of VTE or superficial thrombophlebitis were 1.44 (95% confidence interval: 0.67-3.07) and 1.94 (1.04-3.61), respectively, and 2.01 (1.26-3.21) in those with varicose veins. In multivariable analysis including history of VTE, history of superficial thrombophlebitis, presence of varicose veins, and other patient-related factors, the presence of varicose veins (2.10 [1.29-3.41]) remained significantly associated with an increased risk of VTE. CONCLUSION: The presence of varicose veins is associated with an elevated risk of VTE in cancer patients. This clinical parameter could be useful for individual risk assessment of VTE in these patients.