What is gastric GIST resection?
GIST (gastrointestinal stromal tumor) is the most common mesenchymal tumor of the gastrointestinal tract and arises from the interstitial cells of Cajal. It is most often located in the stomach.
The main treatment for localized GIST is *complete surgical removal of the tumor (R0 resection)* without breaching its capsule. Unlike gastric adenocarcinoma, GIST rarely spreads to the lymph nodes, so a standard lymph node dissection is usually not performed.
Our approach
At MSI, GIST treatment is based on modern international guidelines from the *NCCN and ESMO*.
Before surgery, a comprehensive examination is carried out, which may include:
- gastroscopy
- endoscopic ultrasound (EUS)
- computed tomography
- biopsy (when indicated)
The main goal of the operation is complete removal of the tumor without rupture and with the minimum necessary extent of gastric resection.
In most cases, we perform laparoscopic organ-preserving operations. For large tumors or difficult locations, a more extensive gastric resection may be needed.
In patients with large or locally advanced GISTs, *neoadjuvant targeted therapy with imatinib* may be used before surgery to shrink the tumor and increase the chances of organ-preserving treatment.
When is surgery needed?
GIST resection is performed for:
- localized gastric GISTs
- tumors at risk of growth or bleeding
- symptomatic GISTs
- tumors that grow during follow-up
- GISTs after neoadjuvant therapy
Indications for surgery
Surgery is recommended for:
- confirmed or highly probable GIST
- tumors larger than 2 cm (depending on location and morphological features)
- symptoms (pain, bleeding, anemia)
- signs of malignant potential on examination
How is the operation performed?
The procedure is performed under general anesthesia.
Depending on the location of the tumor, a wedge or segmental gastric resection is performed. The main principle of the operation is complete removal of the tumor with negative resection margins (*R0*) without damaging its capsule.
If necessary, the extent of the operation may be expanded to subtotal or total gastrectomy if the location or size of the tumor requires it.
The removed specimen is sent for histopathological and immunohistochemical examination.
Advantages of laparoscopic surgery
- Maximum preservation of the stomach
- Less surgical trauma
- Less postoperative pain
- Lower risk of postoperative complications
- Faster recovery
- Shorter hospital stay
- Better cosmetic result
Recovery after surgery
Postoperative care follows *ERAS* principles. Eating is resumed gradually, and most patients quickly return to normal life.
Once the histopathology results are available, the risk of recurrence is assessed. When indicated, *adjuvant targeted therapy with imatinib* may be recommended.
Our advantages
- Specialization in the treatment of gastric tumors
- Organ-preserving laparoscopic operations
- Maximum preservation of stomach function
- Adherence to the principles of R0 resection
- A multidisciplinary approach to treatment
- Use of modern NCCN and ESMO international guidelines
- Enhanced recovery program (ERAS)
Frequently Asked Questions
GIST is not a classic adenocarcinoma. It is a separate type of tumor with a malignant potential ranging from very low to high.
In most cases, no. GIST very rarely spreads to the lymph nodes, so a standard lymph node dissection is not performed.
Yes. For most localized GISTs, laparoscopic resection is the method of choice if it is technically feasible and meets the principles of oncological safety.
Conventional chemotherapy is ineffective in GIST. If the risk of recurrence is high, adjuvant *targeted therapy with imatinib* may be recommended.
Yes. With complete removal of a localized tumor (R0 resection), the outlook for most patients is favorable, and the further strategy depends on the individual risk of recurrence.