# Metastatic Pancreatic Cancer Diagnosed From a Lesion in the External Auditory Canal

## TL;DR

This paper reports the first case of metastatic pancreatic cancer diagnosed from a lesion in the ear canal, highlighting the importance of thorough evaluation for unusual cancer presentations.

## Contribution

The novelty lies in documenting the first case of metastatic pancreatic adenocarcinoma presenting in the external auditory canal.

## Key findings

- A 34-year-old male presented with a suspicious lesion in the external auditory canal.
- Biopsy and imaging confirmed metastatic pancreatic adenocarcinoma.
- The case emphasizes the need for prompt assessment of unusual EAC lesions.

## Abstract

Metastases to the external auditory canal (EAC) are extremely rare and most often arise from breast, renal or lung carcinoma. To our knowledge, this is the first case of metastatic pancreatic adenocarcinoma to the EAC. A 34-year-old male patient, a smoker, presented with a 15-month history of right otalgia, otorrhoea, and hearing loss. Examination revealed a large, fleshy, and friable EAC lesion suspicious for neoplastic aetiology. Biopsy reported poorly differentiated adenocarcinoma. Subsequent imaging revealed a large pancreatic head mass, confirming a diagnosis of metastatic pancreatic adenocarcinoma. Although metastatic tumours to the EAC are rare, the differential should be considered when managing patients with EAC lesions. Detailed assessment, including biopsy and imaging, should be undertaken promptly if the presentation is suspicious.