Patients with acute symptomatic frontal and sphenoid sinusitis are usually hospitalized and given intravenous rather than oral antibiotic therapy. Failure to improve with medical therapy requires ...
The frontal sinuses show the most anatomic variation such as congenital absence or hypoplasia (Fig. 1). The sphenoid sinuses, located posteriorly, form last. Anatomy of Sinuses-Artist's Rendition.