Monarch Disease Ontology term MONDO_0003501 (external ear squamous cell carcinoma) is a squamous cell carcinoma that arises from the skin of the external ear. Also known as: epidermoid carcinoma of external Ear, epidermoid carcinoma of the external Ear, epidermoid carcinoma of the external ear, external Ear epidermoid carcinoma, external Ear squamous cell carcinoma, squamous cell carcinoma of external Ear, squamous cell carcinoma of the external Ear.