Vijayendra H, Sangeetha R, Chetty K R
Vijaya ENT Care Centre, No: 1, 9th Cross Margosa road Malleswaram, 560 003 Bangalore, India.
Indian J Otolaryngol Head Neck Surg. 2005 Oct;57(4):294-5. doi: 10.1007/BF02907690.
Preauricular sinus/pit is a common congenital malformation, which presents as a pit or depression at the anterior margin of the ascending margin of helix, adjacent to helicine crux, or adjacent to the tragus. It is inherited as an autosomal dominant incomplete pattern with variable power of expression. It is due to a defect in the auricular embyrogenesis, which results in the preauricular sinus or pit. It is closely related to the helical cartilage. Using local anaesthesia in adults an elliptical incision is made around the sinus, and extended to the postauricular area. Plane of temporalis fascia identified, skin anterior to the sinus is separated from the underlying soft tissue. The soft tissue between the plane of temporalis fascia and the skin anterior to the sinus is excised along with a piece of adjoining helical cartilage. With this method no recurrences were encountered.
耳前窦道/瘘管是一种常见的先天性畸形,表现为在耳轮上缘前缘的一个小孔或凹陷,毗邻耳轮交点,或毗邻耳屏。它以常染色体显性不完全模式遗传,表达能力可变。它是由于耳廓胚胎发育缺陷导致耳前窦道或瘘管形成。它与耳轮软骨密切相关。对于成人,采用局部麻醉,在窦道周围做椭圆形切口,并延伸至耳后区域。确定颞肌筋膜平面,将窦道前方的皮肤与下方软组织分离。沿颞肌筋膜平面与窦道前方皮肤之间的软组织连同一块相邻的耳轮软骨一并切除。采用这种方法未出现复发情况。