The Secondary Manifestation of a Marginal Zone Lymphoma in the Larynx: Lessons From a Misdiagnosis.

The secondary manifestation of a marginal zone lymphoma (MZL), which is a less common type of B-cell non-Hodgkin's Lymphoma (NHL), in the larynx is a rarity. We report a case of the secondary involvement of the larynx following MZL in a 72-year-old woman who presented with the sensation of a foreign body in the throat and history of MZL. A fiberoptic laryngoscopy confirmed the presence of a mass in the supraglottic area. The initial clinical evaluation indicated that the mass was benign. Hence, it was removed surgically. However, the histopathological analysis confirmed the diagnosis of MZL. After a systemic evaluation, the patient was classified as stage IV A according to the Ann Arbor staging system for lymphomas. Treatment was initiated with Ibrutinib 520mg/d and Rituximab 375 mg/m every 28 days. When it comes to tumors of the head and neck, including NHL, the larynx should also be considered as a site for a possible secondary as well as primary involvement.