How Can You Tell If Squamous Cell Carcinoma Has Spread: A Comprehensive Guide

What are the signs of metastatic squamous cell carcinoma as it spreads beyond its initial site? Squamous cell carcinoma, whether in its early or advanced stages, can manifest as various skin abnormalities. These may include the presence of a scaly, reddish patch on the skin, the formation of a firm and raised nodule, or the development of a flat or raised sore that might eventually form a crust. When squamous cell carcinoma metastasizes, it can exhibit these characteristics not only on the primary tumor site but also in other areas of the body to which it has spread. This information helps readers better understand how squamous cell carcinoma may appear as it advances and spreads.

How rapidly squamous cell carcinoma spreads is a common concern for individuals diagnosed with this form of skin cancer. Fortunately, squamous cell carcinoma is generally characterized by a low tendency to metastasize, meaning it seldom spreads to other parts of the body. In cases where metastasis does occur, it typically advances at a slow pace. This slow progression is a key feature of squamous cell carcinoma and is why most diagnoses are made while the cancer is still localized within the upper layer of the skin, allowing for timely intervention and treatment.

• The tumor is thicker than 2 millimeters.
• The tumor has grown into the lower dermis or subcutis layers of the skin.
• The tumor has grown into the nerves in the skin.
• The tumor is present on the ear or on a hair-bearing lip.

• A firm bump on the skin, called a nodule. …
• A flat sore with a scaly crust.
• A new sore or raised area on an old scar or sore.
• A rough, scaly patch on the lip that may become an open sore.
• A sore or rough patch inside the mouth.