並列摘要
Most congenital auricular fistulae are located just above and in front of the meatus and named as preauricular fistula or pit. Some auricular fistulae are located in other areas of the auricle. They originate from lack of fusion between two of the six hillocks that make up the auricle during the embryonic stage. We collected nine cases of auricular fistula of the above-described type. One was on the medial side of the ascending portion of the helix. One was at the lower portion of the helix. One was at the crus of the antihelix and caused abscess and cartilage necrosis in the upper area of the auricle. Two were at the external meatus. Four were located at the crus of the helix and two of these resulted in the formation of postauricular abscess. Owing to the peculiar location and difficulty in excision, we presented the cases and made some discussions.
延伸閱讀
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