HomePhilippine Journal of Otolaryngology Head and Neck Surgeryvol. 24 no. 2 (2009)

Inflammatory Pseudotumor of the Maxillary Sinus

Johann F. Castañeda | Jeffrey S. Concepcion | Ricardo L. Ramirez Jr. | Kirt Areis Delovino



Inflammatory pseudotumor (IPT) is a rarely occurring lesion with no identifiable
local or systemic cause. First described in 1905 by Birch-Hirschfield,1 it remains
somewhat of an enigmatic disease entity despite multiple otolaryngologic, radiologic
and pathologic reports. The term “pseudotumor” was used because these lesions
mimic invasive malignant tumors both clinically and radiologically. IPT most commonly
involves the lung and orbit but has also been reported to occur at sites that make biopsy
or excision difficult or potentially disfiguring.2 Its diagnosis and prompt recognition
may help avoid radical surgery for this benign lesion.