Introduction Pleomorphic adenomas are the most common benign tumour of the major salivary glands. In addition, they may also occur in the minor salivary glands of the hard and soft palate. Intranasal pleomorphic adenomas are unusual and may be misdiagnosed because they have greater myoepithelial cellularity and fewer myxoid stromata compared to those elsewhere. Case presentation We present the case of a 61-year-old man who presented with a 2-year history of left nasal obstruction, occasional epistaxis and facial pain. Radiological examination demonstrated well pneumatised paranasal sinuses and a soft tissue mass in the anterior aspect of the left nasal cavity. In this patient, an intranasal approach was used to achieve a wide local resection. Conclusion Pleomorphic adenomas are rare tumours of the nasal cavity and have been shown to be misdiagnosed in over half of cases leading to more aggressive treatment than is necessary. If unilateral nasal obstruction is the main presenting complaint, we suggest consideration of this diagnosis. In view of the potential for tumour recurrence, long-term follow-up and careful examination of the nose with an endoscope are necessary.
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