OBJECTIVES To characterize the sonographic features of cat scratch disease and to identify features that allow differentiation from other causes of medial epitrochlear masses. METHODS After Institutional Review Board approval was obtained, patients who underwent sonography for a medial epitrochlear mass or lymph node were identified via the radiology information system. Patients were divided ...

1. Golnick KC, Marotto ME, Fanous MM, et al. Ophthalmic manifestations of Rochalimaea species. Am J Ophthalmol 1994;330:1509 –15. 2. Zanwill KM, Hamilton DH, Perkins BA, et al. Cat scratch disease in Connecticut: epidemiology, risk factors, and evaluation of a new diagnostic test. N Engl J Med 1993;329:8–13. 3. Ulrich GG, Waecker NJ, Meister SJ, Peterson TJ, Hooper DG. Cat scratch disease assoc...

BACKGROUND There is considerable international research regarding the link between human demographics and pet ownership. In several international studies, pet ownership was associated with household demographics including: the presence of children in the household, urban/rural location, level of education and age/family structure. What is lacking across all these studies, however, is an underst...

During early ontogeny, stimuli that pose a threat to an animal change. Unrelated adult male rats may kill young rats, but infanticide ends around weaning. Predation, on the other hand, may increase during early ontogeny when rats begin to extend their activity range. We investigated the developmental course of two defensive responses, immobility and analgesia, in young rats exposed to an adult ...

Cat-scratch disease is the most common cause of benign lymphadenopathy in children and young adults. A 21-year-old patient presented with a 14-day history of asymptomatic left submental swelling. Clinical and radiographic examination revealed no dental cause. An enlarged, firm nodule was excised. The histopathologic appearance was consistent with cat-scratch disease. This article summarizes the...