Traumatic perforation: blast injury.The otoscopic view is of the left ear of a patient who sustained a blast injury blast injury n. The tearing of lung tissue or rupture of abdominal viscera without external injury, as by the force of an explosion. blast injury as the result of an industrial explosion. There is a 50% perforation per·fo·ra·tion n. 1. The act of perforating or the state of being perforated. 2. An abnormal opening in a hollow organ or viscus, as one made by rupture or injury. Perforation A hole. of the anterior inferior portion of the tympanic membrane tympanic membrane n. See eardrum. Tympanic membrane A structure in the middle ear that can rupture if pressure in the ear is not equalized during airplane ascents and descents. . Dark, dry blood surrounds the perforation, and there is bright-red blood on the superior edge of the perforation. The round window niche, promontory promontory /prom·on·to·ry/ (prom´on-tor?e) a projecting process or eminence. prom·on·to·ry n. A projecting part. promontory a projecting process or eminence. , hypotympanum, and protympanum are seen through the perforation. From the Pulec Ear Clinic, Los Angeles (Dr. Pulec), and Gap, France (Dr. Deguine). |
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