A Mass Occupied in Neck Carotid Bifurcation Territory Diagnosed Sebaceous Adenocarcinoma: A Case Report

Aims: To describe a rare case presenting with pulsing mass stumbled across the right upper neck.

Presentation of Case: The patient was presented to the outpatient department of ENT due to a pulsing mass stumbled across the right upper neck for half a year. Cervical enhancement CT scan was performed, which disclosed a lesion at the bifurcation of the right carotid artery and possessed insignificant blood supply. Hospitalization was arranged for a full examination, and culminating in a diagnostic resection.

Discussion: This case was challenging for clinicians to differentially diagnose the placeholder at the carotid artery bifurcation, and the pathological results in this case was extremely rare and have never been reported in the literature. Extraocular SGC is strongly associated with Muir–Torre syndrome (MTS), a phenotypic variant of Lynch syndrome and results from mutations in DNA MMR genes. It suggests all patients presenting with sebaceous neoplasms should be screened for MTS.

Conclusion: Our case creates a paradigm for otolaryngologists and oral and maxillofacial surgeons.