About Squamous Cell Carcinoma (Squamous Cell Skin Cancer)

Overview

Squamous cell carcinoma (SCC) is a type of cancer that originates from squamous cells, which are flat cells found in the skin or mucous membranes. It can occur in various parts of the body, including the skin, lungs, and head and neck region. SCC is characterized by the abnormal and uncontrolled growth of these squamous cells, leading to the formation of tumors. If left untreated, the cancer cells can spread to other parts of the body through a process called metastasis. SCC is the second most common type of skin cancer and is also a subtype of non-small cell lung cancer. Risk factors for developing SCC include exposure to ultraviolet radiation from the sun, smoking, certain genetic conditions, and a weakened immune system. Early diagnosis and treatment are important for better outcomes.

Causes and Risk Factors

Squamous cell carcinoma (SCC) is caused by an unregulated growth of squamous cells in the body. The specific causes of SCC can vary depending on the location of the cancer. However, in general, SCC is associated with the following factors:

Non-modifiable risk factors are factors that cannot be changed. Non-modifiable risk factors for SCC include:

• Fair skin
• Weakened immune system
• History of skin cancer
• Age over 50
• Male gender
• History of human papillomavirus (HPV) infection
• History of actinic keratosis (a precancerous skin condition)

Modifiable risk factors are factors that can be changed or influenced. Modifiable risk factors for SCC include:

• Sun exposure: Prolonged and unprotected exposure to ultraviolet (UV) radiation from the sun or tanning beds increases the risk of SCC.
• Chemical exposure: Certain chemicals, such as arsenic, can increase the risk of SCC.
• Lifestyle factors: Poor dietary habits, alcohol misuse, and tobacco use are associated with an increased risk of SCC.

Symptoms

Early symptoms of SCC:

• Persistent cough
• Bloody sputum
• Shortness of breath or wheezing
• Hoarseness
• Chest pain, especially when taking a deep breath or coughing
• Unexplained weight loss
• Decreased appetite
• Fatigue

Symptoms that may occur with later stages, progression, or higher severity of SCC:

• Swollen lymph nodes
• Dizziness
• Headache
• Feelings of weakness or numbness in the limbs
• Bone pain
• Seizures

It's important to note that some people may not experience symptoms until the cancer has spread. Recurring lung infections, such as pneumonia or bronchitis, can also be symptoms of squamous cell lung carcinoma. If you experience any of these symptoms, it's crucial to consult with a healthcare professional for an accurate diagnosis and appropriate treatment plan.

Diagnosis

To diagnose squamous cell carcinoma (SCC), doctors commonly perform the following examinations, tests, and procedures:

• Physical examination: The healthcare provider will look for physical signs such as pain, swelling, or the presence of masses in the body.
• Medical history: The doctor will ask questions about symptoms and take a full medical history.
• Biopsy: A tissue sample is taken from the affected area and sent to a laboratory for analysis.
• Endoscopy and laryngoscopy: These procedures allow doctors to visualize the inside of the throat using a thin, flexible tube with a camera.
• Imaging tests: CT scan, ultrasound, and MRI may be used to determine the extent of the condition and stage of SCC.

To determine the stage or severity of SCC, additional examinations, tests, and procedures may include:

• Additional imaging studies: PET-CT scan or bone scan may be performed to check if cancer has spread to other parts of the body.
• Staging biopsy: A biopsy may be performed on lymph nodes or other suspicious areas to check for cancer spread.
• Genetic testing: This test helps identify genetic changes that may affect the prognosis or treatment options.

Remember, it's important to consult your healthcare provider for personalized advice regarding examinations, tests, and procedures for SCC.

Treatment Options

The goals of treatment for squamous cell carcinoma (SCC) are to remove or destroy the cancerous cells, prevent the cancer from spreading, and improve the patient's overall survival and quality of life.

Treatment options for SCC include:

• Surgery: This is the most common treatment for SCC. Different surgical methods may be used, such as surgical excision, cryotherapy (freezing and destroying the cancerous tissue), curettage and electrodesiccation (removing the cancer with a sharp tool and using electrical currents to destroy remaining cancer cells), or Mohs surgery (removing the cancer stage by stage in layers). Lymph nodes may also be removed in advanced cases.
• Radiation therapy: High-energy beams are used to kill cancer cells. It can be used as the primary treatment for early-stage SCC or in combination with surgery or chemotherapy for more advanced cases.
• Topical medications: Medications applied directly to the skin, such as creams or gels, can help treat superficial SCC.
• Light therapy: Also known as photodynamic therapy (PDT), it uses a photosensitizing agent and light to destroy cancer cells.
• Immunotherapy and chemotherapy: These treatments may be recommended for advanced SCC that has spread to other parts of the body. They work by targeting and killing cancer cells or boosting the immune system's ability to fight cancer.
• Health behavior changes such as sun protection, quitting smoking, and maintaining a healthy lifestyle can help reduce the risk of developing SCC or prevent its recurrence.

Remember, treatment options may vary depending on the individual case. It is essential to consult with a healthcare professional who can provide personalized advice based on your specific situation.