{Reference Type}: Case Reports
{Title}: Pleomorphic adenoma in the external auditory canal: Arising at an atypical location.
{Author}: Dongol K;Karki UR;Dongol K;Karki UR;
{Journal}: SAGE Open Med Case Rep
{Volume}: 9
{Issue}: 0
{Year}: 2021
暂无{DOI}: 10.1177/2050313X211063790
{Abstract}: Pleomorphic adenoma is a common, benign neoplasm typically located in the major salivary glands. The external auditory canal is an atypical location for a pleomorphic adenoma to originate. Wide surgical excision is essential in cases of pleomorphic adenoma due to its tendency to recur and change into malignancy. We report a case of pleomorphic adenoma emerging in the external auditory canal, which is an atypical location for it to originate. A 23-year-old male presented with swelling and decreased hearing in the left ear for 2 months. On examination, there was a smooth, pink, firm swelling in the cartilaginous part of external auditory canal. Pure tone audiogram and computed tomography of temporal bone were performed. The patient underwent excision biopsy and the diagnosis of pleomorphic adenoma was confirmed after histopathology. Long-term follow-up is recommended as pleomorphic adenoma has the potentiality to recur or transform into malignancy.