A Case of Seborrheic Keratosis of Cavum Concha

Seborrheic keratosis is a common type of epidermal tumor caused by benign proliferation immature keratinocytes. They usually appear as well-demarcated, slightly raised brownish patches or plaques. are typically slow-growing, can increase in thickness over time, and rarely resolved spontaneously. frequently found on sun-exposed skin surfaces such the trunk, extremities, head neck elderly people. However, it rare to find these lesions auricle external auditory canal. In addition, seborrheic often distinguished tumor, but there be some morphological overlap with other malignant lesions. Herein, we report, along literature review, case patient who presented mass left cavum concha sudden size.