Whitlock, Joseph P.

Non-traumatic subperiosteal orbital hematoma is a rare finding and uncommon cause of proptosis. Reported cases describe an association with increased venous pressure. However, it is important to note that there is also an association with sinusitis, which must be differentiated from subperiosteal abscess. This article describes the unique imaging features of subperiosteal hematoma in the setting of sinusitis, as well as the suspected pathophysiology.

Pulmonary hypertension (PH) has been found to have significant morbidity and mortality. The treatment of PH has advanced considerably with increasingly more effective and safer options. With an increasing effort to diagnose patients early, non-invasive techniques are often used to screen those patients likely to have PH. Computerized tomography (CT) chest scans are increasingly utilized in the evaluation of patients with exertional dyspnea, including those with suspected PH. The main role of the CT scan is to evaluate for any associated underlying diseases. There have been attempts to address the utility of CT to predict the presence of PH. This article reviews previously published investigations to summarize the relationship between pulmonary artery dimensions and PH to determine both the strength of the correlation and its discriminatory ability for use in clinical practice.