A benign neoplasm that involves the submandibular gland. The disease is MONDO_0021481 (benign neoplasm of submandibular gland). Also known as: benign neoplasm of the submandibular gland, benign submandibular gland neoplasm, benign submandibular gland tumor, benign submandibular gland tumour, benign tumor of submandibular gland, benign tumor of the submandibular gland, benign tumour of submandibular gland, benign tumour of the submandibular gland.