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  • Title: Medial migration of tympanostomy tubes: an overlooked complication.
    Author: Groblewski JC, Harley EH.
    Journal: Int J Pediatr Otorhinolaryngol; 2006 Oct; 70(10):1707-14. PubMed ID: 16814404.
    Abstract:
    BACKGROUND: Frequently encountered complications associated with tympanostomy tube placement have been well documented and are globally recognized. The medial migration of tympanostomy tubes into the middle ear space is a rare complication for which pathogenesis, natural history, and management have not been clearly delineated. OBJECTIVE: To describe our experience with the medial migration of tympanostomy tubes into the middle ear space. To propose a simple classification system and define management recommendations. METHODS: A retrospective chart review of all patients with medial tube migration seen in a Pediatric Otolaryngology practice at a tertiary care university hospital between 1995 and 2005. RESULTS: Six pediatric patients (ages 3-19) were found to have seven tympanostomy tubes within the middle ear space at various intervals following tube placement. One patient had a migrated tympanostomy tube deep to a large myringotomy incision. Five patients (six ears) had migrated tubes medial to intact, healed tympanic membranes. Fifty percent of the patients had symptoms attributable to the migrated tube. All six patients underwent middle ear exploration with successful removal of the migrated tube. CONCLUSIONS: This process can be defined as primary, when the tympanostomy tube migrates due to a technical error, or secondary, when the tube is initially seen in the correct position but is later found medial to a healed, intact tympanic membrane. Medial migration is apparently independent of tube type and can occur at various intervals after placement. The process of secondary migration is most likely multifactorial but may in part be the result of persistent negative middle ear pressure. Migrated tubes should be removed surgically unless contraindicated.
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