orbital fat density and fluid collections on the medial or superior orbital wall. Subperiosteal abscesses are rim-enhancing collections between the periorbita and orbital wall; these lesions are well demonstrated by…
FIGURE 34–1. Urticaria. FIGURE 34–2. Angioedema involving the tongue obstructing the airway. Angioedema • Inflammation occurs in the mucosa and deeper dermis. • Extravasation involves deep dermal vessels. • Histamine…
• Infratip lobule: portion of lobule located inferior to tip-defining point and superior to infratip break • Infratip break: lobule-columella junction • Nasal sill: nostril rim located between columella and…
FIGURE 35–1. Anatomy of nasopharynx (sagittal). • Inferior: soft palate (free edge) • Superior/posterior: skull base, clivus, C1 Anatomic Subsites • Roof • Lateral walls • Posterior pharyngeal wall IMAGING…
TABLE 25–1. Sinonasal Papilloma Exophytic Papilloma • Pathophysiology: 1. More common in males (8:1), most common in fifth decade 2. Most arise from nasal septum; rarely involves vestibule, turbinates, or…
Biopsy • Endoscopic biopsies prior to definitive surgical procedure and radiological evaluation Classification • WHO classification for malignant sinonasal tumours 1. Malignant epithelial: (a) SCC, (b) adenoid cystic carcinoma, (c)…
• History of prior nasal or sinus surgery may compromise flap harvesting and selection of tissue for skull base reconstruction. • Previous sphenoid surgery may have compromised the posterior septal…
FIGURE 36–1. Endoscopic image of a cadaveric dissection of the anterior skull base region after complete exposure of the anterior ventral skull base via a modified Lothrop procedure anteriorly, total…
• The age group most affected by AR is late teens to early twenties. • Risk factors: cigarette exposure, family history of atopy, higher socioeconomic status, first born or only…
