Afzalzadeh Mohammad Reza, Sadri Amir Bahador, Hosseinpoor Masoumeh, Karimpour Malekshah Mohammad
Sinus and Surgical Endoscopic Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
Department of Otorhinolaryngology, Head and Neck surgery, Mashhad University of Medical Sciences, Mashhad, Iran.
Iran J Otorhinolaryngol. 2022 Mar;34(121):121-125. doi: 10.22038/IJORL.2022.59029.3037.
A congenital cervical mass is a considerable health problem worldwide; however, accessory tragus (AT) in the neck is extremely rare. The cervical variant of AT or congenital cartilaginous rest of the neck (CCRN) is a rare anomaly related to the branchial arch located at the lateral of the neck that typically presents as an asymptomatic papule or nodule along the anterior border of sternocleidomastoid (SCM) muscle. It is detected since birth or in the first few years of life. Diagnosis is based on the clinical characteristics of the lesion, surgical findings, and histopathologic studies.
A young man with no underlying diseases or known congenital anomaly was referred by a dermatologist for an asymptomatic pedunculated papule in the left mid-cervical area. Physical examination reveals a firm and mobile papule with a size of 1*1 cm on the anterior middle 1/3 border of the SCM. Radiologic findings illustrated a mass nearby the SCM with a long tract beneath it extending upward. The lesion was finally resected, and during surgery, a long tract was discovered, and histopathologic examination confirmed the diagnosis of a CCRN.
{'i': 'Although rare, the cervical variant of AT or CCRN should be considered in a differential diagnosis of benign masses in the neck.'}
先天性颈部肿块是全球范围内一个相当严重的健康问题；然而，颈部副耳极为罕见。颈部副耳变异型或先天性颈部软骨残余（CCRN）是一种罕见的异常情况，与位于颈部外侧的鳃弓有关，通常表现为沿胸锁乳突肌（SCM）前缘的无症状丘疹或结节。它在出生时或生命的最初几年被发现。诊断基于病变的临床特征、手术发现和组织病理学研究。
一名无基础疾病或已知先天性异常的年轻男子被皮肤科医生转诊，因其左颈部中部有一个无症状的带蒂丘疹。体格检查发现，在胸锁乳突肌前缘中1/3交界处有一个质地坚硬、可活动的丘疹，大小为1×1厘米。影像学检查结果显示，胸锁乳突肌附近有一个肿块，其下方有一条向上延伸的长管。病变最终被切除，手术过程中发现了一条长管，组织病理学检查确诊为先天性颈部软骨残余。
虽然罕见，但在颈部良性肿块的鉴别诊断中应考虑颈部副耳变异型或先天性颈部软骨残余。
