Head & neck
-
Allergic fungal sinusitis (AFS) usually follows a slow, nonaggressive course. However, massive bone destruction can occur, with extension of the disease process outside of the confines of the sinuses. ⋯ We propose a new diagnostic entity, "skull base allergic fungal sinusitis" (SBAFS), which incorporates the histologic diagnostic criteria of AFS with the computed tomographic (CT) criteria of bone erosion. Biopsy is necessary to rule out invasive fungus or tumor. Otolaryngologists, ophthalmologists, and neurosurgeons should be familiar with SBAFS so that systemic antifungal agents, craniotomy, and dural resection-which might initially appear necessary-can be avoided. Endoscopic surgical debridement and drainage combined with topical steroids can lead to resolution of disease, even in the presence of marked bone erosion and cranial neuropathy.