Diagnostic tools in systems pathology are super important for creating personalized treatment plans. These tools include histopathology, immunohistochemistry, and molecular techniques.

1. Histopathology: This involves looking at tissue samples to find out what kind of disease is present. It helps doctors choose the right treatments. For example, knowing what type of tumor someone has can lead to better treatment options.

2. Immunohistochemistry: This method uses special proteins called antibodies. These help find specific markers in the tissues. This can show doctors what specific treatments might work. For example, checking for hormone receptors in breast cancer can guide the treatment choice.

3. Molecular Techniques: These techniques, like next-generation sequencing, look at the genetic information of tumors. This helps in understanding what specific changes (mutations) are happening inside the cancer. With this knowledge, doctors can use targeted therapies, such as EGFR inhibitors for lung cancer when certain mutations are found.

In short, these tools help improve medical treatments by making sure they fit each individual patient perfectly.