Clinical trials play an important role in improving cancer prevention, diagnosis and treatment. For some patients, taking part may offer access to new therapies that are not yet widely available. Your care team can help determine whether a clinical trial may be an option and explain what participation involves.
What is Gastrointestinal Stromal Tumors (GIST) ?
A gastrointestinal stromal tumor, often called a GIST, is a rare type of cancer that develops in the digestive tract. It begins when specialized cells, usually in the wall of the stomach or small intestine, start to grow and divide abnormally, forming a tumor.
GISTs can behave differently from person to person. Some grow slowly and cause few symptoms, while others grow more quickly. If you or someone you care about has concerns, LifeBridge Health’s cancer specialists can help explain what a GIST diagnosis may involve and guide next steps with care.
Gastrointestinal Stromal Tumors (GIST) Symptoms
Symptoms can vary based on the tumor’s size and location. In cases where symptoms do occur, they might mimic other digestive issues.
Common signs of a gastrointestinal stromal tumor include:
- A noticeable mass or swelling in the abdomen
- Abdominal discomfort, pain or a feeling of fullness
- Nausea or vomiting
- Loss of appetite
- Blood in the stool
- Unexplained weight loss or fatigue
How Gastrointestinal Stromal Tumors (GIST) is Diagnosed
Evaluation usually begins when symptoms draw attention or a mass is found during imaging for another concern. Several tests help confirm a GIST diagnosis and guide treatment planning.
Imaging Tests
CT, MRI and PET scans are commonly used to locate the tumor, measure its size and see whether it has spread to nearby areas.
Endoscopy or Endoscopic Ultrasound
A thin tube with a camera may be used to examine the digestive tract from the inside. Endoscopic ultrasound can also help assess deeper tumors and guide biopsies.
Biopsy
A small tissue sample is taken and examined under a microscope. Special tests look for gene changes that help confirm a GIST diagnosis and guide treatment choices.
Blood Tests
Blood tests help assess organ function and overall health but are not used on their own to diagnose GIST.
Gastrointestinal Stromal Tumors (GIST) Treatment Options
Treatment depends on the tumor’s size, location and genetic features. Your LifeBridge Health care team collaborates across disciplines to evaluate each option and help you choose the best possible care plan.
Surgery
Surgery is often used to remove GISTs that are localized and have not spread. The goal is to remove the tumor while preserving as much healthy tissue as possible.
Targeted Therapy
GISTs can respond well to targeted medicines that focus on specific gene changes in the tumor. These treatments can shrink tumors, slow growth or help prevent recurrence.
Radiation or Chemotherapy
Traditional chemotherapy and radiation therapy are rarely used for GIST but may be considered in select situations.
Immunotherapy
Immunotherapy is being studied for GIST and may be considered in select advanced cases to help the immune system target cancer cells.
Clinical Trials
Supportive Services
When you receive cancer care at LifeBridge Health, you have access to supportive services like counseling, integrative therapies and support groups. These resources are designed to help patients care for their physical and emotional well‑being throughout treatment and beyond.