Cancer inside the nose most often appears as a lump, mass, or sore on the nasal lining that doesn’t heal. It can look like a fleshy growth ranging from pink or red to brown or black, depending on the type. Because the inside of the nose is difficult to see without medical instruments, most people notice nasal cancer through its symptoms first: persistent one-sided congestion, recurring nosebleeds, or facial pain that won’t resolve.
How Different Nasal Cancers Look
The most common type of nasal cancer is squamous cell carcinoma, which forms in the thin, flat cells lining the nasal cavity and sinuses. These tumors can grow outward from the surface in a bumpy, papillary pattern or push inward into deeper tissue. They tend to appear as firm, irregular masses that may look raw, ulcerated, or crusted on the surface. The color is usually pink to reddish, sometimes with white or grayish patches where the tissue has thickened.
Mucosal melanoma, a rarer and more aggressive type, looks distinctly different. On endoscopy it typically appears as a one-sided, polypoid (stalk-like) growth with pigmentation that can range from brown or black to red or even pale white. Some melanomas have satellite lesions, meaning smaller spots scattered near the main growth. The wide color variation makes this type tricky to identify visually, since not all nasal melanomas are dark.
Esthesioneuroblastoma (olfactory neuroblastoma) develops high in the nasal cavity near the roof of the nose, where smell receptors sit. It presents as a soft, glistening, reddish-grey polypoid mass. The surface often looks smooth with intact overlying tissue, and the tumor is typically highly vascular, meaning it bleeds easily when touched. These growths can range from under 1 cm to large masses that extend into the sinuses or even toward the brain.
Early Symptoms You’d Actually Notice
Most people can’t see inside their own nasal cavity well enough to spot a growth directly. What you’re more likely to notice are the effects of a growing mass. The hallmark early sign is chronic nasal congestion or blockage on one side only. A cold or allergies typically affect both sides. One-sided stuffiness that persists for weeks, especially if it worsens over time, is worth getting checked.
Other early warning signs include:
- Recurring nosebleeds, particularly from one nostril
- A sore or lump inside the nose that doesn’t heal over several weeks
- Loss of smell that develops gradually
- Facial pain or pressure on one side that doesn’t respond to typical sinus treatments
These symptoms overlap heavily with sinus infections and allergies, which is why nasal cancers are often caught later than they should be. The key difference is persistence and one-sidedness. If standard treatments for congestion aren’t working after several weeks, that pattern deserves further investigation.
Nasal Polyps vs. Cancer
Nasal polyps are the most common benign growths found in the nose, and they can look similar to cancerous masses on imaging and even during a physical exam. Both can appear as soft tissue masses filling part of the nasal cavity. In some cases, even CT scans struggle to tell them apart.
There are some visual differences that help doctors distinguish the two. Benign polyps tend to be translucent or pale grey, smooth-surfaced, and bilateral (appearing on both sides). They often have a teardrop shape and move slightly when probed. Cancerous growths are more likely to be one-sided, firm, irregularly shaped, and prone to bleeding when touched. An inverted papilloma, a benign growth that can turn malignant in a small percentage of cases, has a distinctive granular, mulberry-like surface with irregular blood vessel patterns on its surface. Ultimately, a biopsy is the only way to confirm whether a nasal mass is cancerous.
What Advanced Nasal Cancer Looks Like
When nasal or sinus cancer grows beyond the nasal cavity, it produces visible changes on the outside of the face. These later-stage signs include swelling of the cheek or around the eye, a lump on the face or the roof of the mouth, and loosening of the upper teeth as the tumor erodes into the bone of the upper jaw. Some people develop bulging of one eye (proptosis) or double vision as the cancer pushes into the eye socket. Nasal pain that radiates across the face or persistent headaches can accompany these changes.
These external signs typically indicate the cancer has moved beyond its original site, which significantly affects the outlook. According to American Cancer Society data from 2015 to 2021, the five-year survival rate for nasal cavity and paranasal sinus cancers caught while still localized is 87%. Once the cancer has spread to nearby structures or lymph nodes (regional stage), that drops to 56%. This gap underscores why persistent, unexplained nasal symptoms are worth investigating early rather than attributing to allergies or a stubborn sinus infection.
How Nasal Cancer Is Found
Because the nasal cavity is hidden from easy view, diagnosis relies on nasal endoscopy, where a thin, flexible camera is passed into the nose. Modern high-resolution endoscopes allow doctors to examine the surface texture, color, and blood vessel patterns of any growth in detail. Cancerous tissue tends to appear more vascular (rich in blood vessels) and friable (easily broken or bleeding) compared to benign tissue.
If a suspicious mass is found, a small tissue sample is taken during the endoscopy and examined under a microscope. This biopsy is what confirms or rules out cancer and identifies the specific type. Imaging with CT or MRI scans then maps the size and extent of the growth, helping determine whether it’s confined to the nasal cavity or has spread into surrounding bone, sinuses, or soft tissue. The entire process from endoscopy to diagnosis can often be completed within a week or two.