Interior of a larynx after tracheotomy
Wellcome Collection

Interior of a larynx after tracheotomy

Mark, Leonard Portal

CC0 — Public Domain
Wellcome Collection

Watercolour drawing of the interior of a larynx after tracheotomy. The lower end of the tube had ulcerated through the mucous membrane below the wound and raised a small flap. This acted like a valve, and during a fit of coughing closed the trachea, and caused the death of the child.

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