A school-age child with chronic otitis media presents with vertigo, profuse purulent otorrhea from both tympanostomy tubes, and a pearly-white lesion on one tympanic membrane. Which condition is most likely?

A school-age child with chronic otitis media presents with vertigo, profuse purulent otorrhea from both tympanostomy tubes, and a pearly-white lesion on one tympanic membrane. Which condition is most likely?

• A. Cholesteatoma
• B. Mastoiditis
• C. Otitis externa
• D. Otitis media with effusion

Answer: (A)

Cholesteatoma is the most likely diagnosis here. A cholesteatoma is an abnormal growth of keratinizing squamous epithelium that develops in the middle ear, often in the setting of chronic otitis media or a retraction pocket of the tympanic membrane. It produces a pearly-white mass that can be visible on the tympanic membrane, and it tends to shed keratin debris into the middle ear. This process can erode the ossicles and extend to involve the inner ear or mastoid, leading to conductive hearing loss and sometimes vertigo if the labyrinth is affected. The persistent, purulent drainage through tympanostomy tubes fits with ongoing middle-ear disease, and the vertigo points to possible extension or irritation of the inner ear structures. Other conditions don’t fit as well. Otitis externa involves infection of the external auditory canal and does not typically present with a pearly white lesion on the tympanic membrane or with chronic middle-ear drainage through tympanostomy tubes. Otitis media with effusion usually causes non-purulent, often serous fluid in the middle ear with a dull, retracted tympanic membrane and decreased movement, but not a purulent discharge or a white mass on the TM. Mastoiditis would present with more external signs such as postauricular swelling and fever, not a white lesion on the tympanic membrane. In summary, the pearl-white mass on the tympanic membrane accompanying chronic middle-ear symptoms and vertigo is classic for cholesteatoma, which requires prompt evaluation and often surgical management to prevent further erosion and complications.

Cholesteatoma is the most likely diagnosis here. A cholesteatoma is an abnormal growth of keratinizing squamous epithelium that develops in the middle ear, often in the setting of chronic otitis media or a retraction pocket of the tympanic membrane. It produces a pearly-white mass that can be visible on the tympanic membrane, and it tends to shed keratin debris into the middle ear. This process can erode the ossicles and extend to involve the inner ear or mastoid, leading to conductive hearing loss and sometimes vertigo if the labyrinth is affected. The persistent, purulent drainage through tympanostomy tubes fits with ongoing middle-ear disease, and the vertigo points to possible extension or irritation of the inner ear structures.

Other conditions don’t fit as well. Otitis externa involves infection of the external auditory canal and does not typically present with a pearly white lesion on the tympanic membrane or with chronic middle-ear drainage through tympanostomy tubes. Otitis media with effusion usually causes non-purulent, often serous fluid in the middle ear with a dull, retracted tympanic membrane and decreased movement, but not a purulent discharge or a white mass on the TM. Mastoiditis would present with more external signs such as postauricular swelling and fever, not a white lesion on the tympanic membrane.

In summary, the pearl-white mass on the tympanic membrane accompanying chronic middle-ear symptoms and vertigo is classic for cholesteatoma, which requires prompt evaluation and often surgical management to prevent further erosion and complications.