[Malignant tumour from a ceruminous adenoma in the ear canal].

Abstract

In this case report, a 77-year-old man presented in 2016 with a tumour in the ear canal. A biopsy revealed a benign ceruminous adenoma, which was surgically removed. The tumour recurred in 2019 and 2022, with each recurrence surgically removed and confirmed as benign. In December 2023, the patient developed facial paralysis and diagnostic imaging showed an infiltrating tumour. A biopsy revealed an exceedingly rare malignant ceruminous adenocarcinoma. The tumour was deemed inoperable and the patient was referred to radiotherapy. Prior biopsies were re-evaluated and were shown to be identical to the 2023 malignancy.