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Traumatic external auditory canal atresia
1Sacramento Ear, Nose, and Throat Surgical and Medical Group, California.
The American Journal of Otology
|January 1, 1992
Summary
Gunshot injuries can cause severe ear canal damage, leading to delayed closure or atresia. These cases highlight how trauma-induced ear canal obstruction and cholesteatomas can be initially missed, even by specialists.
Area of Science:
- Otolaryngology
- Trauma Surgery
- Plastic Reconstructive Surgery
Background:
- Periauricular gunshot injuries can cause significant soft tissue damage.
- Such injuries may lead to overlooked otologic abnormalities, including external auditory canal (EAC) stenosis or atresia.
- Early recognition of EAC complications is crucial for timely intervention.
Observation:
- Two cases of post-traumatic EAC atresia were initially misdiagnosed by non-otolaryngologists.
- During reconstructive surgery, large canal cholesteatomas were discovered secondary to complete EAC obstruction from trauma.
- These cholesteatomas arose from the chronic obstruction of the EAC.
Findings:
- Traumatic EAC obstruction can lead to the development of acquired cholesteatomas.
- Delayed diagnosis of EAC atresia can complicate management and necessitate extensive reconstructive procedures.
- The dramatic soft tissue effects of periauricular gunshots can obscure underlying otologic damage.
Implications:
- Highlights the importance of thorough otologic evaluation in patients with periauricular trauma.
- Underscores the potential for delayed complications such as cholesteatoma formation after EAC obstruction.
- Emphasizes the need for increased awareness among non-specialists regarding potential ear canal injuries from ballistic trauma.