Final answer:
An abnormal protruding growth from the nasal mucosa is generally known as a nasal polyp or tumor. These can be benign neoplasms or more serious malignant tumors, such as squamous cell carcinoma, depending on their nature and origin.
Step-by-step explanation:
An abnormal protruding growth from the nasal mucosa is commonly known as a nasal polyp or sometimes as a tumor. These polyps can vary in nature; they may be benign neoplasms, which are non-cancerous overgrowths that do not spread to other parts of the body, or in more severe cases, they can be malignant tumors, such as a squamous cell carcinoma which is a type of skin cancer that can also present as a lesion on the nose. The nose is made up of various structures including the nasal cavity, nasal conchae, and nasal bones that support and shape the nose. The nasal cavity is lined with mucosa, and it is this tissue that can develop polyps. Polyps can result from chronic inflammation and may cause symptoms like nasal blockage and congestion.