A malignant neoplasm involving the dermis. The disease is MONDO_0003363 (malignant dermis tumor). Also known as: cancer of dermis, dermis cancer, malignant dermal neoplasm, malignant dermis neoplasm, malignant neoplasm of dermis, malignant neoplasm of the dermis, malignant tumor of dermis, malignant tumor of the dermis.