How is external auditory canal exophytic bone wart caused?
summary
The localized overgrowth of the bone wall of the external auditory canal results in the formation of tuberous eminence of the external auditory canal (exotosis). It occurs frequently in adults and young adults. It is common in men, and it is bilateral and multiple. The external auditory canal exostosis is a nodular protuberance formed by localized excessive bone hyperplasia in the external auditory canal. The etiology may be related to local trauma, inflammation and cold water stimulation. Pathological examination showed that there were abundant bone cells and matrix in the bone of verruca, but there was no fibrous vascular sinus. The tissue structure of exostosis of external auditory canal is cancellous bone or dense bone without cartilage, so it is different from osteoma. The reason is that cartilage may appear in the process of bone overgrowth in osteoma, and some think that exophytic osteowart is osteoma. How is external auditory canal exophytic bone wart caused?
How is external auditory canal exophytic bone wart caused?
The exact cause of the disease is unknown. The common factor is that people who often swim in cold water are easy to get the disease; Neurovascular disorders supplying the bony external auditory canal; The abnormal development of bone near tympanic ring of external auditory canal and chronic inflammatory stimulation lead to fibrous tissue proliferation and gradually ossification to form exostosis. Long term stimulation of mechanical and chemical factors is also a pathogenic factor. Exophytic verruca is located in the bony external auditory canal. It is often multiple sessile or broad-based bony processes. The external auditory canal verruca is accompanied by normal bone cells and matrix in the bone.
After growing up, exostosis can narrow the external auditory canal, exfoliate cerumen or epithelial cells, block the external auditory canal, cause ear occlusion and stuffy swelling, hearing loss and tinnitus. Larger individual exostosis stimulates the skin of external auditory canal and produces compressive pain. Due to ear tapping or removal of cerumen, it is easy to damage the skin of exostosis, and it is difficult to drain the water into the external auditory canal when bathing or swimming. Therefore, eczema and inflammation of the external auditory canal are easy to occur, causing secretion overflow and severe earache.
Laser resection of external auditory canal exostosis is more thorough, and less damage to the surrounding and bone. It is mainly suitable for large exostosis, obvious external auditory canal stenosis and hearing loss. The patients with recurrent inflammation caused by bone wart blocking external auditory canal and suppurative otitis media and mastoiditis affecting pus drainage.
matters needing attention
1. Pay attention to health when you are not ill, especially for children. Those with suppurative otitis media, ear furuncle and infant eczema should pay more attention to the local cleanness and dryness, keep the ear and its surrounding clean, and pay attention not to pick out the ear randomly. 2. Do not wash after getting sick. If it is dirty or scabby, you can wipe it with vegetable oil first, and then gently wipe it with gauze or sterilized soft paper after it is loose. If you really have to wash it, use Kushen soup. 3. Change external medication on time and take internal medication on time.
