Inflammatory Pseudotumor of the Sinonasal Tract

Inflammatory Pseudotumor of the Sinonasal Tract

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Inflammatory pseudotumors (IPTs) are a clinically and histologically diverse group of lesions characterized by a tumor mass of acute and chronic inflammatory cells with a variable fibrous response.IPTs most commonly involve the Polish lung and orbit, but rarely the sinonasal tract.We report a 68-year-old male with an IPT of the sinonasal tract presenting as nasal obstruction and postnasal dripping for several years.A gray-white soft mass was noted in the right nasal cavity.Computed tomography revealed a solid mass Saw Palmetto filling the right nasal cavity and maxillary sinus.

Caldwell-Luc operation with ethmoidectomy (right) was conducted to resect the mass en bloc.Pathology revealed admixture of plasma cells, lymphocytes and eosinophils, confirming the diagnosis of IPT.The patient remained symptom-free over 4 years of follow-up.Awareness of the clinical presentations, histopathologic features and treatment of choice of this rare disease entity is necessary to distinguish it from malignancy and avoid unnecessary management.[J Formos Med Assoc 2007;106(2):165-168].