[Extramedullary plasmacytoma of the larynx. A case report].

Extramedullary plasmacytoma of the larynx and localized laryngeal amyloidosis are two entities that are extremely rare in children. We report the case of an 11-year-old child presenting with progressive dysphonia, with a diagnosis of extramedullary plasmacytoma and localized laryngeal amyloidosis. The treatment he received and subsequent follow-up were compared with the few cases found in the literature.