Isolated inverted papilloma of the sphenoid sinus

Abstract

Inverted papilloma is a rare benign sinonasal tumour, characterized by a potentially invasive nature. The lateral nasal wall represents the most common site of origin, whereas paranasal sinuses are quite frequently found to be involved by extension. In contrast, primary sinus inverted papillomas have rarely been reported. The present study describes an extremely rare case of inverted papilloma, isolated to the left sphenoid sinus, that was treated by a transnasal endoscopic procedure. The therapeutic approach chosen is discussed and the results of a two-year follow-up are also presented.

Papiloma invertido isolado em recesso esfenoetmoidal

“…Waitz e Wigand 12 report the involvement of some paranasal sinus in 88% of the cases, and the anterior ethmoidal was the most frequent with 71% and the sphenoidal, the least frequent, with 10%. Many authors report the sphenoid sinus as the least frequently affected by the inverted papilloma, with very few reports of involvement of this sinus alone [1][2][3][4]6,7 .…”

“…The few reports of sphenoethmoidal recess involvement by inverted papilloma are, in fact, tumors of the sphenoid sinus, which progressed towards the sphenoethmoidal recess 1,3,7,8 . In the literature there is no report of an inverted papilloma affecting the sphenoethmoidal recess.…”

“…In the literature there is no report of an inverted papilloma affecting the sphenoethmoidal recess. Most of the times, the inverted papilloma cause unilateral nasal obstruction followed by epistaxis 1 . Nasal obstruction is much more common in cases of disease originating in the middle meatus, being less frequent in the sphenoid sinus 1,7,8 .…”

“…Most of the times, the inverted papilloma cause unilateral nasal obstruction followed by epistaxis 1 . Nasal obstruction is much more common in cases of disease originating in the middle meatus, being less frequent in the sphenoid sinus 1,7,8 . In theses cases, the disease tends to be more insidious and inespecific, more associated with the vulnerable nerve-vessel bundles associated with this sinus 13 .…”

“…Inverted papilloma is a rare benign neoplasia that, most of the times, originates from the lateral nasal cavity wall, more precisely in the middle meatus region 1 . Inverted papilloma is also known as fibromyxoid papilloma, transitional cells papilloma, Ewing papilloma, Schneiderian papilloma or Ringertz's papilloma 2 .…”