Figure 6a.

Satisfaction of search compounded by premature closure. A 17-year-old boy presented with fever of unknown origin. (a) Axial nonenhanced CT image of the chest demonstrated pneumonia in the posterior segment of the right upper lobe. Antibiotic therapy was started, but the fever persisted. Images were further reviewed at the referred institution. (b) Axial nonenhanced CT image (bone window) shows cortical rib erosions (arrows). Tuberculosis with rib involvement was diagnosed. In this case, the secondary rib findings were missed after the pulmonary findings were identified. In addition, the initial diagnostic evaluation did not consider tuberculosis, although it should have been included as a differential diagnosis for the pulmonary findings.