Isolated sphenoid lesions are rare. It is likely that isolated sphenoid sin
us disease is underreported for a number of reasons, First, the presenting
symptoms are often nonspecific; second, the inaccessibility of the sinus pr
ecludes optimal physical examination; and third, before the advent of CT an
d MRI scanning, radiologic examination of the sinus was inadequate, Endosco
pic evaluation and current imaging techniques with CT or MRI have contribut
ed to an increase in diagnosis of these lesions. Twenty-one patients with i
solated sphenoid lesions that I treated in a 4-year period are presented. T
he pathology was unilateral sphenoid sinusitis (8), sphenoid mucoceles (4),
inflammatory sphenochoanal polyp (3), inverting papilloma (2), invasive pi
tuitary adenoma (1), carcinoma (1), aspergilloma (1), and fibrous dysplasia
(1). Endoscopic biopsy was carried out in 7 patients (33.3%), A precise di
agnosis after endoscopy, biopsy, and imaging studies was established in all
patients. Definitive treatment included an endoscopic sphenoidotomy in 15
(71.4%), Five patients (23.8%) were treated with other therapeutic modaliti
es. One patient did not require any definitive treatment. The combined use
of imaging techniques and diagnostic nasal endoscopy allows for an accurate
diagnosis and enables minimally invasive techniques to be tailored to the
patient's disease.