Treatments
The development of warning symptoms of lung cancer is, as a rule, quite late and, therefore, only 30-50% of patients are operable at diagnosis. However, medical advances in recent years have made it possible to offer effective treatments for most patients.
- Surgery is the mainstay of radical treatment and can be offered first or as a complement to other types of therapies. The lung consists of increasingly fine branches of bronchi, arteries and veins, so much so that it can be represented by a tree. Any lung resection must take into account its anatomy.
- Anatomic lung surgery:
- The most frequently proposed surgery is lobectomy, which is the removal of a portion of the lung that represents a morpho-functional unit.
- The extent of resection may be limited to one lobe, two lobes, or the entire lung.
- Recent advances in the technical field, allow us to propose, in certain cases, even more limited operations that are called segmentectomy.
- Non-anatomic lung surgery: we speak in this case of "wedge" or "slice." Wedges are small lung resections that are proposed for diagnosis or treatment of metastases or in cases of limited respiratory function.
- Other surgeries that are reserved for thoracic organ tumors are:
- Thymectomy.
- Pleural biopsies/pleurodesis.
- Lymph node biopsies/aspiration.
All of these procedures can be performed by open technique or minimally invasive surgery, depending on the issue. Lung oncology in EOC has both thoracoscopic and robotic techniques available. Each surgery is designed according to the characteristics and location of the tumor and according to the peculiarities of each patient.
- Radio-oncology: radiotherapy, possibly combined with chemotherapy, uses high-energy ionizing radiation to "destroy" cancer cells while trying to safeguard surrounding healthy tissues and organs. It is an outpatient treatment and does not involve invasive procedures. It can have several purposes:
- Curative intent: it is performed for the purpose of radically eliminating all cancer cells in the lung and/or loco-regional lymph nodes affected by the disease (can be performed exclusively or in combination with chemotherapy).
- Postoperative Intent (adjuvant): is performed within a few months after lobectomy and lymphadenectomy surgery in order to reduce risks of loco-regional recurrence, if there are risk factors revealed on definitive postoperative histologic examination (positive margins and/or lymph node capsule overgrowth).
- Preoperative (neo-adjuvant) intent: is performed before surgery (often combined with chemotherapy) in order to reduce tumor disease and make a tumor operable.
- Palliative intent: is performed in patients in whom the disease has spread to other organs and aims to improve/resolve a symptom related to the tumor disease.
- Medical oncology: evaluates the indication for therapy with anticancer drugs that are used in different situations and are also used in combination. The choice of therapy depends on the tumor stage, histologic subtype, and molecular profile of the tumor.
- In localized stage: the addition of chemotherapy (and in some cases immunotherapy) to surgery and/or radiation therapy at curative doses is intended to reduce the risk of disease recurrence.
- In metastatic disease: immunotherapy and chemotherapy form the basis of treatment by blocking the progression of cancer cells at metastatic sites.
- Lung cancers that have particular mutations at the level of specific genes (such as EGFR, ALK, ROS1) can be treated with molecular targeted therapies (target therapy).
In case of tumor recurrence or disease progression during cancer treatment: anticancer drugs are intended to keep the disease under control and slow down its progression.
In order to assess the staging and re-staging of lung cancer after therapy, the following nuclear medicine examinations are performed:
- Bone scintigraphy: a diagnostic method to assess the degree of metabolic activity of the skeleton and to recognize any lesion that causes a district alteration of bone metabolic turnover such as metastatic lesions.
- FDG-PET-CT: nuclear medicine method that highlights tumor lesions as cancer cells exhibit increased glucose metabolism and accumulate F18- FDG.
- Lung scintigraphy: a method used to quantify functional lung reserves pre-surgery.
Professionals in Palliative and Supportive Care are an integral part of the team and fit into the surgical, oncology and radiation treatment plan of care in response to emerging needs.